diff --git a/codegen/CHANGELOG.md b/codegen/CHANGELOG.md
index 01069a266bb9a..c7a4f7fbebe12 100644
--- a/codegen/CHANGELOG.md
+++ b/codegen/CHANGELOG.md
@@ -1,25 +1,35 @@
 # Smithy AWS Typescript Codegen Changelog
 
+## 0.38.0 (2025-11-20)
+
+- Upgraded to smithy-typescript 0.37.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0380-2025-11-20))
+- Includes upgrade of smithy to 1.64.0
+
 ## 0.37.0 (2025-11-04)
 
 ### Features
-- Upgraded to smithy-typescript 0.37.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0361-2025-11-04))
+
+- Upgraded to smithy-typescript 0.37.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0370-2025-11-04))
 - Upgraded smithy version to 1.63.0 ([#7474](https://github.com/aws/aws-sdk-js-v3/pull/7474))
 
 ### Bug Fixes
+
 - Applied reserved word escaping to union shape in Json serializer ([#7419](https://github.com/aws/aws-sdk-js-v3/pull/7419))
 
 ## 0.36.1 (2025-10-06)
 
 ### Features
+
 - Upgraded to smithy-typescript 0.36.1 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0361-2025-10-06))
 
 ### Chores
+
 - Removed usage of deprecated APIs ([#7395](https://github.com/aws/aws-sdk-js-v3/pull/7395))
 
 ## 0.36.0 (2025-09-30)
 
 ### Features
+
 - Upgraded to smithy-typescript 0.36.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0360-2025-09-30))
 - Upgraded smithy version to 1.62.0 ([#7386](https://github.com/aws/aws-sdk-js-v3/pull/7386))
 - Used DOMParser for browser XML parsing ([#7347](https://github.com/aws/aws-sdk-js-v3/pull/7347))
@@ -28,28 +38,33 @@
 ## 0.35.0 (2025-09-18)
 
 ### Features
+
 - Upgraded to smithy-typescript 0.35.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0350-2025-09-18))
 
 ## 0.34.1 (2025-09-10)
 
 ### Features
+
 - Upgraded to smithy-typescript 0.34.1 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0341-2025-09-10))
 
 ## 0.34.0 (2025-07-30)
 
 ### Features
+
 - Upgraded to smithy-typescript 0.34.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0340-2025-07-30))
 - Upgraded smithy version to 1.61.0 ([#7233](https://github.com/aws/aws-sdk-js-v3/pull/7233))
 
 ## 0.33.0 (2025-07-10)
 
 ### Features
+
 - Upgraded to smithy-typescript 0.33.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0330-2025-07-10))
 - Upgraded smithy version to 1.60.3 ([#7170](https://github.com/aws/aws-sdk-js-v3/pull/7170))
 - Updated codegen to get token from environment variable ([#7166](https://github.com/aws/aws-sdk-js-v3/pull/7166))
 - Updated codegen to use Websocket in browser runtime for Bedrock Runtime ([#7175](https://github.com/aws/aws-sdk-js-v3/pull/7175))
 
 ### Bug Fixes
+
 - Used model service instead of iterating services ([#7184](https://github.com/aws/aws-sdk-js-v3/pull/7184))
 - Generated default endpoint provider for default regional AWS endpoints ([#7190](https://github.com/aws/aws-sdk-js-v3/pull/7190))
 
@@ -58,17 +73,21 @@
 ## 0.32.0 (2025-06-26)
 
 ## Features
+
 - Upgraded to smithy-typescript 0.32.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0320-2025-06-26))
 
 ## Bug Fixes
+
 - Added default AWS regional endpoints for generated AWS clients ([#7151](https://github.com/aws/aws-sdk-js-v3/pull/7151))
 
 ## 0.31.1 (2025-06-23)
 
 ## Features
+
 - Upgraded to smithy-typescript 0.31.1 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0311-2025-06-23))
 
 ## Bug Fixes
+
 - Updated codegen for endpoint configuration, event streams, and error classification ([#7143](https://github.com/aws/aws-sdk-js-v3/pull/7143))
 - Fixed awsQueryCompat error structure for backwards compatibility ([#7133](https://github.com/aws/aws-sdk-js-v3/pull/7133))
 - Allowed explicit undefined in EndpointParameters ([#7131](https://github.com/aws/aws-sdk-js-v3/pull/7131))
@@ -76,53 +95,64 @@
 ## 0.31.0 (2025-06-09)
 
 ## Features
+
 - Upgraded to smithy 1.58.0 and smithy-typescript 0.31.0.
 
 ## Bug Fixes
+
 - Fixed fallback behavior for SigV4A to SigV4 ([#7113](https://github.com/aws/aws-sdk-js-v3/pull/7113))
 
 ## 0.30.0 (2025-05-08)
 
 ## Features
+
 - Upgraded to smithy 1.57.1 and smithy-typescript 0.30.0.
 
 ## Bug Fixes
+
 - Allowed the `AwsSmithyRpcV2Cbor` generator to take priority over the base `SmithyRpcV2Cbor` generator. The
-AWS extension enables AwsQueryCompatibility handling. ([#7058](https://github.com/aws/aws-sdk-js-v3/pull/7058))
+  AWS extension enables AwsQueryCompatibility handling. ([#7058](https://github.com/aws/aws-sdk-js-v3/pull/7058))
 
 ## 0.29.1 (2025-04-24)
 
 ## Features
+
 - Upgraded to smithy-typescript 0.29.1 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0291-2025-04-24))
 
 ## Bug Fixes
+
 - Removed host prefix behaviour for S3 and S3Control ([#7025](https://github.com/aws/aws-sdk-js-v3/pull/7025))
 
 ## 0.29.0 (2025-04-11)
 
 ## Features
+
 - Upgraded to smithy-typescript 0.29.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0290-2025-04-11))
 - Upgraded to smithy 1.55.0 ([#7005](https://github.com/aws/aws-sdk-js-v3/pull/7005))
 
 ## 0.28.0 (2025-04-01)
 
 ## Features
+
 - Upgraded to smithy-typescript 0.28.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0280-2025-04-01))
 - Enforced singular config object for resolver stack ([#6969](https://github.com/aws/aws-sdk-js-v3/pull/6969))
 
 ## 0.27.0 (2025-03-04)
 
 ## Features
+
 - Upgraded to smithy-typescript 0.27.0 ([Release Notes](https://github.com/smithy-lang/smithy-typescript/blob/main/CHANGELOG.md#0270-2025-03-04))
 - Upgraded to smithy 1.54.0 ([#6913](https://github.com/aws/aws-sdk-js-v3/pull/6913))
 - Upgraded to smithy 1.53.0 ([#6906](https://github.com/aws/aws-sdk-js-v3/pull/6906))
 
 ### Bug Fixes
+
 - Fixed union member serialization in JSON ([#6892](https://github.com/aws/aws-sdk-js-v3/pull/6892))
 
 ## 0.26.0 (2025-01-22)
 
 ### Features
+
 - Upgraded to 0.26.0 of smithy-typescript ([Release Notes](https://github.com/kuhe/smithy-typescript/blob/main/CHANGELOG.md#0260-2025-01-22))
 - Enabled profile configuration for clients ([#6728](https://github.com/aws/aws-sdk-js-v3/pull/6728))
 - Created nested clients for internal use ([#6791](https://github.com/aws/aws-sdk-js-v3/pull/6791))
@@ -130,6 +160,7 @@ AWS extension enables AwsQueryCompatibility handling. ([#7058](https://github.co
 ## 0.25.0 (2024-11-18)
 
 ### Features
+
 - Upgraded to 1.51.0 of Smithy ([Release Notes](https://github.com/smithy-lang/smithy/blob/main/CHANGELOG.md#1520-2024-10-16))
 - Upgraded to 0.25.0 of smithy-typescript ([Release Notes](https://github.com/kuhe/smithy-typescript/blob/main/CHANGELOG.md#0250-2024-11-18))
 
@@ -137,79 +168,86 @@ AWS extension enables AwsQueryCompatibility handling. ([#7058](https://github.co
 
 ### Features
 
-* Populates and resolves flexible checksums client config values ([#6471](https://github.com/aws/aws-sdk-js-v3/pull/6471))
+- Populates and resolves flexible checksums client config values ([#6471](https://github.com/aws/aws-sdk-js-v3/pull/6471))
 
 ### Bug Fixes
 
-* Allow empty string field values for headers ([#6511](https://github.com/aws/aws-sdk-js-v3/pull/6511))
-* Fix setting the defualt signing name ([#6487](https://github.com/aws/aws-sdk-js-v3/pull/6487))
-* Fix how waiters are generated using error types when using `awsQuery` ([#6501](https://github.com/aws/aws-sdk-js-v3/pull/6501))
+- Allow empty string field values for headers ([#6511](https://github.com/aws/aws-sdk-js-v3/pull/6511))
+- Fix setting the defualt signing name ([#6487](https://github.com/aws/aws-sdk-js-v3/pull/6487))
+- Fix how waiters are generated using error types when using `awsQuery` ([#6501](https://github.com/aws/aws-sdk-js-v3/pull/6501))
 
 ## 0.23.0 (2024-09-10)
 
 ### Features
-* Added support for SigV4a and sigining region sets ([#6368](https://github.com/aws/aws-sdk-js-v3/pull/6368))
-* Added support for Smithy RPCv2 CBOR protocol ([#6096](https://github.com/aws/aws-sdk-js-v3/pull/6096))
 
+- Added support for SigV4a and sigining region sets ([#6368](https://github.com/aws/aws-sdk-js-v3/pull/6368))
+- Added support for Smithy RPCv2 CBOR protocol ([#6096](https://github.com/aws/aws-sdk-js-v3/pull/6096))
 
 ## 0.22.0 (2024-08-06)
 
 ### Features
-* Added support for `AccountIdEndpointMode` when configuring client endpoint parameters ([#6036](https://github.com/aws/aws-sdk-js-v3/pull/6036))
-* Enabled the new identity and auth behavior by default ([#1352](https://github.com/smithy-lang/smithy-typescript/pull/1352))
 
+- Added support for `AccountIdEndpointMode` when configuring client endpoint parameters ([#6036](https://github.com/aws/aws-sdk-js-v3/pull/6036))
+- Enabled the new identity and auth behavior by default ([#1352](https://github.com/smithy-lang/smithy-typescript/pull/1352))
 
 ## 0.21.0 (2024-05-22)
 
 ### Bug Fixes
-* Added dependencies required by default credential providers ([#6055](https://github.com/aws/aws-sdk-js-v3/pull/6055))
-* Statically import credential-provider-node in clients used from credentials ([#6027](https://github.com/aws/aws-sdk-js-v3/pull/6027))
-* Changed the logic to only add doc trait conditionally ([#6002](https://github.com/aws/aws-sdk-js-v3/pull/6002))
+
+- Added dependencies required by default credential providers ([#6055](https://github.com/aws/aws-sdk-js-v3/pull/6055))
+- Statically import credential-provider-node in clients used from credentials ([#6027](https://github.com/aws/aws-sdk-js-v3/pull/6027))
+- Changed the logic to only add doc trait conditionally ([#6002](https://github.com/aws/aws-sdk-js-v3/pull/6002))
 
 ## 0.20.1 (2024-04-05)
 
 ### Features
-* Add option to prevent md5 computation ([#5953](https://github.com/aws/aws-sdk-js-v3/pull/5953))
-* Update Smithy to 1.47.0 ([#5956](https://github.com/aws/aws-sdk-js-v3/pull/5956))
+
+- Add option to prevent md5 computation ([#5953](https://github.com/aws/aws-sdk-js-v3/pull/5953))
+- Update Smithy to 1.47.0 ([#5956](https://github.com/aws/aws-sdk-js-v3/pull/5956))
 
 ## 0.20.0 (2024-03-27)
 
 ### Features
-* Reduced code size for xml serde ([#5568](https://github.com/aws/aws-sdk-js-v3/pull/5568), [#5566](https://github.com/aws/aws-sdk-js-v3/pull/5566))
-* Reduced generated code size for all clients with library serde helpers ([#5855](https://github.com/aws/aws-sdk-js-v3/pull/5855))
-* Implemented lazy-loading of STS & SSO clients in credential providers ([#5681](https://github.com/aws/aws-sdk-js-v3/pull/5681))
+
+- Reduced code size for xml serde ([#5568](https://github.com/aws/aws-sdk-js-v3/pull/5568), [#5566](https://github.com/aws/aws-sdk-js-v3/pull/5566))
+- Reduced generated code size for all clients with library serde helpers ([#5855](https://github.com/aws/aws-sdk-js-v3/pull/5855))
+- Implemented lazy-loading of STS & SSO clients in credential providers ([#5681](https://github.com/aws/aws-sdk-js-v3/pull/5681))
 
 ### Bug Fixes
-* Fixed an issue that could cause endpoint augmentations not to be applied in certain cases ([#5933](https://github.com/aws/aws-sdk-js-v3/pull/5933))
-* Fixed an issue where the `_json` deser function wouldn't be imported ([#5837](https://github.com/aws/aws-sdk-js-v3/pull/5837))
-* Added string fallback for S3 responses that contain the `Expires` timestamp instead of throwing an exception ([#5715](https://github.com/aws/aws-sdk-js-v3/pull/5715))
+
+- Fixed an issue that could cause endpoint augmentations not to be applied in certain cases ([#5933](https://github.com/aws/aws-sdk-js-v3/pull/5933))
+- Fixed an issue where the `_json` deser function wouldn't be imported ([#5837](https://github.com/aws/aws-sdk-js-v3/pull/5837))
+- Added string fallback for S3 responses that contain the `Expires` timestamp instead of throwing an exception ([#5715](https://github.com/aws/aws-sdk-js-v3/pull/5715))
 
 ## 0.19.0 (2023-11-03)
 
 ### Features
-* Created coercing serializers for awsQueryCompat ([#5440](https://github.com/aws/aws-sdk-js-v3/pull/5440))
-* Migrated the `@aws-sdk/util-endpoints` package to use the newly added `@smithy/util-endpoints` package ([#5390](https://github.com/aws/aws-sdk-js-v3/pull/5390))
-* Added Node.js 14.x version deprecation warning ([#5413](https://github.com/aws/aws-sdk-js-v3/pull/5413))
-* Deprecated gamesparks ([#5386](https://github.com/aws/aws-sdk-js-v3/pull/5386))
-* Changed codegen for JSON protocols to use `awsExpectUnion`, which ignores the `__type` field ([#5376](https://github.com/aws/aws-sdk-js-v3/pull/5376))
-* Updated shapes with members targeting string and number enums (TypeScript unions) to be closed ([#5356](https://github.com/aws/aws-sdk-js-v3/pull/5356))
-* Added e2e suite for lib-dynamodb ([#5306](https://github.com/aws/aws-sdk-js-v3/pull/5306))
-* Added middleware for following region redirects ([#5185](https://github.com/aws/aws-sdk-js-v3/pull/5185))
+
+- Created coercing serializers for awsQueryCompat ([#5440](https://github.com/aws/aws-sdk-js-v3/pull/5440))
+- Migrated the `@aws-sdk/util-endpoints` package to use the newly added `@smithy/util-endpoints` package ([#5390](https://github.com/aws/aws-sdk-js-v3/pull/5390))
+- Added Node.js 14.x version deprecation warning ([#5413](https://github.com/aws/aws-sdk-js-v3/pull/5413))
+- Deprecated gamesparks ([#5386](https://github.com/aws/aws-sdk-js-v3/pull/5386))
+- Changed codegen for JSON protocols to use `awsExpectUnion`, which ignores the `__type` field ([#5376](https://github.com/aws/aws-sdk-js-v3/pull/5376))
+- Updated shapes with members targeting string and number enums (TypeScript unions) to be closed ([#5356](https://github.com/aws/aws-sdk-js-v3/pull/5356))
+- Added e2e suite for lib-dynamodb ([#5306](https://github.com/aws/aws-sdk-js-v3/pull/5306))
+- Added middleware for following region redirects ([#5185](https://github.com/aws/aws-sdk-js-v3/pull/5185))
 
 ### Bug Fixes
-* Updated to use partial record for enum keyed types ([#5391](https://github.com/aws/aws-sdk-js-v3/pull/5391))
+
+- Updated to use partial record for enum keyed types ([#5391](https://github.com/aws/aws-sdk-js-v3/pull/5391))
 
 ## 0.18.0 (2023-10-04)
 
 ### Features
-* Refactor addImport usage ([#4986](https://github.com/aws/aws-sdk-js-v3/pull/4986))
-* Remove defaults mode provider codegen ([#4993](https://github.com/aws/aws-sdk-js-v3/pull/4993))
-* Temporarily disable unused codegen ([#4996](https://github.com/aws/aws-sdk-js-v3/pull/4996))
-* Customize @aws.auth#sigv4 identity providers for the AWS SDK ([#5179](https://github.com/aws/aws-sdk-js-v3/pull/5179))
-* Customize @httpBearerAuth identity providers for the AWS SDK ([#5169](https://github.com/aws/aws-sdk-js-v3/pull/5169))
-* Add aws region runtime extension codegen ([#5157](https://github.com/aws/aws-sdk-js-v3/pull/5157))
-* Add smithy-aws-endpoints dependency ([#5311](https://github.com/aws/aws-sdk-js-v3/pull/5311))
-* Upgrade to Smithy 1.39.0 ([#5311](https://github.com/aws/aws-sdk-js-v3/pull/5311))
+
+- Refactor addImport usage ([#4986](https://github.com/aws/aws-sdk-js-v3/pull/4986))
+- Remove defaults mode provider codegen ([#4993](https://github.com/aws/aws-sdk-js-v3/pull/4993))
+- Temporarily disable unused codegen ([#4996](https://github.com/aws/aws-sdk-js-v3/pull/4996))
+- Customize @aws.auth#sigv4 identity providers for the AWS SDK ([#5179](https://github.com/aws/aws-sdk-js-v3/pull/5179))
+- Customize @httpBearerAuth identity providers for the AWS SDK ([#5169](https://github.com/aws/aws-sdk-js-v3/pull/5169))
+- Add aws region runtime extension codegen ([#5157](https://github.com/aws/aws-sdk-js-v3/pull/5157))
+- Add smithy-aws-endpoints dependency ([#5311](https://github.com/aws/aws-sdk-js-v3/pull/5311))
+- Upgrade to Smithy 1.39.0 ([#5311](https://github.com/aws/aws-sdk-js-v3/pull/5311))
 
 ## 0.17.1 (2023-07-07)
 
@@ -217,33 +255,33 @@ AWS extension enables AwsQueryCompatibility handling. ([#7058](https://github.co
 
 ### Features
 
-* Upgraded to Smithy 1.33.0 ([#4899](https://github.com/aws/aws-sdk-js-v3/pull/4899))
+- Upgraded to Smithy 1.33.0 ([#4899](https://github.com/aws/aws-sdk-js-v3/pull/4899))
 
 ## 0.16.0 (2023-06-30)
 
 ### Features
 
-* Updated code generator to use @smithy scoped npm packages ([#4873](https://github.com/aws/aws-sdk-js-v3/pull/4873))
-* Updated code generator to use runtime-agnostic util-stream package ([#4861](https://github.com/aws/aws-sdk-js-v3/pull/4861))
+- Updated code generator to use @smithy scoped npm packages ([#4873](https://github.com/aws/aws-sdk-js-v3/pull/4873))
+- Updated code generator to use runtime-agnostic util-stream package ([#4861](https://github.com/aws/aws-sdk-js-v3/pull/4861))
 
 ## 0.15.0 (2023-05-10)
 
 ### Features
 
-* Add Gradle composite build ([#4710](https://github.com/aws/aws-sdk-js-v3/pull/4710))
-* Add factory for aggregated clients ([#4639](https://github.com/aws/aws-sdk-js-v3/pull/4639))
-* Shorten serde code in protocols files ([#4625](https://github.com/aws/aws-sdk-js-v3/pull/4625), [#4714](https://github.com/aws/aws-sdk-js-v3/pull/4714))
-* Reduce generated HTTP request header code ([#4594](https://github.com/aws/aws-sdk-js-v3/pull/4594))
-* Add client api-extraction ([#4567](https://github.com/aws/aws-sdk-js-v3/pull/4567))
-* Reduce XML deserialization code size ([#4565](https://github.com/aws/aws-sdk-js-v3/pull/4565))
-* Add operations list to client README files ([#4478](https://github.com/aws/aws-sdk-js-v3/pull/4478))
-* Use generic client runtime config ([#4427](https://github.com/aws/aws-sdk-js-v3/pull/4427))
+- Add Gradle composite build ([#4710](https://github.com/aws/aws-sdk-js-v3/pull/4710))
+- Add factory for aggregated clients ([#4639](https://github.com/aws/aws-sdk-js-v3/pull/4639))
+- Shorten serde code in protocols files ([#4625](https://github.com/aws/aws-sdk-js-v3/pull/4625), [#4714](https://github.com/aws/aws-sdk-js-v3/pull/4714))
+- Reduce generated HTTP request header code ([#4594](https://github.com/aws/aws-sdk-js-v3/pull/4594))
+- Add client api-extraction ([#4567](https://github.com/aws/aws-sdk-js-v3/pull/4567))
+- Reduce XML deserialization code size ([#4565](https://github.com/aws/aws-sdk-js-v3/pull/4565))
+- Add operations list to client README files ([#4478](https://github.com/aws/aws-sdk-js-v3/pull/4478))
+- Use generic client runtime config ([#4427](https://github.com/aws/aws-sdk-js-v3/pull/4427))
 
 ### Bug Fixes
 
-* Fix jsonName deserialization on complex shapes ([#4670](https://github.com/aws/aws-sdk-js-v3/pull/4670))
-* Fix allowing idempotency token ([#4642](https://github.com/aws/aws-sdk-js-v3/pull/4642))
-* Fix missing dashes in client README files ([#4480](https://github.com/aws/aws-sdk-js-v3/pull/4480))
+- Fix jsonName deserialization on complex shapes ([#4670](https://github.com/aws/aws-sdk-js-v3/pull/4670))
+- Fix allowing idempotency token ([#4642](https://github.com/aws/aws-sdk-js-v3/pull/4642))
+- Fix missing dashes in client README files ([#4480](https://github.com/aws/aws-sdk-js-v3/pull/4480))
 
 ## 0.14.0 (2023-02-09)
 
@@ -251,125 +289,125 @@ AWS extension enables AwsQueryCompatibility handling. ([#7058](https://github.co
 
 ### Features
 
-* Upgrade to Java 17 ([#4096](https://github.com/aws/aws-sdk-js-v3/pull/4096))
-* Upgrade to smithy 1.27.2 ([#4387](https://github.com/aws/aws-sdk-js-v3/pull/4387))
-* Endpoints 2.0 package changes ([#3947](https://github.com/aws/aws-sdk-js-v3/pull/3947))
-* Support awsQueryError trait ([#3998](https://github.com/aws/aws-sdk-js-v3/pull/3998))
-* Add TokenAuthPlugin ([#4238](https://github.com/aws/aws-sdk-js-v3/pull/4238), [#4012](https://github.com/aws/aws-sdk-js-v3/pull/4012), [#3972](https://github.com/aws/aws-sdk-js-v3/pull/3972))
-* Add RetryStrategyV2 ([#4248](https://github.com/aws/aws-sdk-js-v3/pull/4248))
-* Replace Hash with Checksum ([#4346](https://github.com/aws/aws-sdk-js-v3/pull/4346))
-* Use util-utf8 instead of platform dependencies ([#4353](https://github.com/aws/aws-sdk-js-v3/pull/4353))
-* Reduce object copying in iterators ([#4194](https://github.com/aws/aws-sdk-js-v3/pull/4194))
-* Support util functions to consume response streams ([#3977](https://github.com/aws/aws-sdk-js-v3/pull/3977))
-* Update awsAuthPlugin to set default signing name ([#4259](https://github.com/aws/aws-sdk-js-v3/pull/4259))
-* fix(codegen): safe access for error code location ([#4367](https://github.com/aws/aws-sdk-js-v3/pull/4367))
+- Upgrade to Java 17 ([#4096](https://github.com/aws/aws-sdk-js-v3/pull/4096))
+- Upgrade to smithy 1.27.2 ([#4387](https://github.com/aws/aws-sdk-js-v3/pull/4387))
+- Endpoints 2.0 package changes ([#3947](https://github.com/aws/aws-sdk-js-v3/pull/3947))
+- Support awsQueryError trait ([#3998](https://github.com/aws/aws-sdk-js-v3/pull/3998))
+- Add TokenAuthPlugin ([#4238](https://github.com/aws/aws-sdk-js-v3/pull/4238), [#4012](https://github.com/aws/aws-sdk-js-v3/pull/4012), [#3972](https://github.com/aws/aws-sdk-js-v3/pull/3972))
+- Add RetryStrategyV2 ([#4248](https://github.com/aws/aws-sdk-js-v3/pull/4248))
+- Replace Hash with Checksum ([#4346](https://github.com/aws/aws-sdk-js-v3/pull/4346))
+- Use util-utf8 instead of platform dependencies ([#4353](https://github.com/aws/aws-sdk-js-v3/pull/4353))
+- Reduce object copying in iterators ([#4194](https://github.com/aws/aws-sdk-js-v3/pull/4194))
+- Support util functions to consume response streams ([#3977](https://github.com/aws/aws-sdk-js-v3/pull/3977))
+- Update awsAuthPlugin to set default signing name ([#4259](https://github.com/aws/aws-sdk-js-v3/pull/4259))
+- fix(codegen): safe access for error code location ([#4367](https://github.com/aws/aws-sdk-js-v3/pull/4367))
 
 ### Bug fixes
 
-* Populate message field when parsing errors ([#3995](https://github.com/aws/aws-sdk-js-v3/pull/3995), [#3999](https://github.com/aws/aws-sdk-js-v3/pull/3999))
-* Update message in Error key in case of XML protocol ([#4000](https://github.com/aws/aws-sdk-js-v3/pull/4000))
-* Update aws-query protocol to distinguish explicit empty list ([#4003](https://github.com/aws/aws-sdk-js-v3/pull/4003))
-* Update S3 default config.signingEscapePath to false ([#4013](https://github.com/aws/aws-sdk-js-v3/pull/4013))
-* Use default no-op logger to preserve type safety ([#4171](https://github.com/aws/aws-sdk-js-v3/pull/4171))
-* Fix S3 control to add prefix dedupe middleware ([#4286](https://github.com/aws/aws-sdk-js-v3/pull/4286))
-* Fix restXml protocol test for timestampFormat targets ([#4364](https://github.com/aws/aws-sdk-js-v3/pull/4364))
-* Fix endpoints 2.0 bugs ([#4043](https://github.com/aws/aws-sdk-js-v3/pull/4043), [#4051](https://github.com/aws/aws-sdk-js-v3/pull/4051), [#4059](https://github.com/aws/aws-sdk-js-v3/pull/4059), [#4132](https://github.com/aws/aws-sdk-js-v3/pull/4132), [#4164](https://github.com/aws/aws-sdk-js-v3/pull/4164), [#4285](https://github.com/aws/aws-sdk-js-v3/pull/4285))
+- Populate message field when parsing errors ([#3995](https://github.com/aws/aws-sdk-js-v3/pull/3995), [#3999](https://github.com/aws/aws-sdk-js-v3/pull/3999))
+- Update message in Error key in case of XML protocol ([#4000](https://github.com/aws/aws-sdk-js-v3/pull/4000))
+- Update aws-query protocol to distinguish explicit empty list ([#4003](https://github.com/aws/aws-sdk-js-v3/pull/4003))
+- Update S3 default config.signingEscapePath to false ([#4013](https://github.com/aws/aws-sdk-js-v3/pull/4013))
+- Use default no-op logger to preserve type safety ([#4171](https://github.com/aws/aws-sdk-js-v3/pull/4171))
+- Fix S3 control to add prefix dedupe middleware ([#4286](https://github.com/aws/aws-sdk-js-v3/pull/4286))
+- Fix restXml protocol test for timestampFormat targets ([#4364](https://github.com/aws/aws-sdk-js-v3/pull/4364))
+- Fix endpoints 2.0 bugs ([#4043](https://github.com/aws/aws-sdk-js-v3/pull/4043), [#4051](https://github.com/aws/aws-sdk-js-v3/pull/4051), [#4059](https://github.com/aws/aws-sdk-js-v3/pull/4059), [#4132](https://github.com/aws/aws-sdk-js-v3/pull/4132), [#4164](https://github.com/aws/aws-sdk-js-v3/pull/4164), [#4285](https://github.com/aws/aws-sdk-js-v3/pull/4285))
 
 ## 0.12.0 (2022-09-19)
 
 ### Features
 
-* Added support for endpoints v2. ([#3942](https://github.com/aws/aws-sdk-js-v3/pull/3942))
-* Added support for multiple error headers. ([#3852](https://github.com/aws/aws-sdk-js-v3/pull/3852))
-* Added support for customer middleware for STS client. ([#3887](https://github.com/aws/aws-sdk-js-v3/pull/3887))
-* Added fallback to status code for unmodeled errors. ([#3752](https://github.com/aws/aws-sdk-js-v3/pull/3752))
-* Removed unnecessary S3 Size modification from inte to long. ([#3664](https://github.com/aws/aws-sdk-js-v3/pull/3664))
-* Removed deprecated S3 regional endpoints middleware. ([#3656](https://github.com/aws/aws-sdk-js-v3/pull/3656))
-* Added support for recursion detection middleware in Lambda. ([#3654](https://github.com/aws/aws-sdk-js-v3/pull/3654))
-* Used Record type instead of Object. ([#3659](https://github.com/aws/aws-sdk-js-v3/pull/3659))
-* Added check for javascript property validity for property access. ([#3649](https://github.com/aws/aws-sdk-js-v3/pull/3649))
-* Added codegen indicator comment to all generated files. ([#3592](https://github.com/aws/aws-sdk-js-v3/pull/3592))
-* Updated HTTP2 handler to accept parameters from default config provider. ([#3580](https://github.com/aws/aws-sdk-js-v3/pull/3580), [#3810](https://github.com/aws/aws-sdk-js-v3/pull/3810))
-* Enabled HTTP2 support based on protocol trait definition. ([#3577](https://github.com/aws/aws-sdk-js-v3/pull/3577))
-* Added support for multi-region sigv4a signer. ([#3518](https://github.com/aws/aws-sdk-js-v3/pull/3518))
+- Added support for endpoints v2. ([#3942](https://github.com/aws/aws-sdk-js-v3/pull/3942))
+- Added support for multiple error headers. ([#3852](https://github.com/aws/aws-sdk-js-v3/pull/3852))
+- Added support for customer middleware for STS client. ([#3887](https://github.com/aws/aws-sdk-js-v3/pull/3887))
+- Added fallback to status code for unmodeled errors. ([#3752](https://github.com/aws/aws-sdk-js-v3/pull/3752))
+- Removed unnecessary S3 Size modification from inte to long. ([#3664](https://github.com/aws/aws-sdk-js-v3/pull/3664))
+- Removed deprecated S3 regional endpoints middleware. ([#3656](https://github.com/aws/aws-sdk-js-v3/pull/3656))
+- Added support for recursion detection middleware in Lambda. ([#3654](https://github.com/aws/aws-sdk-js-v3/pull/3654))
+- Used Record type instead of Object. ([#3659](https://github.com/aws/aws-sdk-js-v3/pull/3659))
+- Added check for javascript property validity for property access. ([#3649](https://github.com/aws/aws-sdk-js-v3/pull/3649))
+- Added codegen indicator comment to all generated files. ([#3592](https://github.com/aws/aws-sdk-js-v3/pull/3592))
+- Updated HTTP2 handler to accept parameters from default config provider. ([#3580](https://github.com/aws/aws-sdk-js-v3/pull/3580), [#3810](https://github.com/aws/aws-sdk-js-v3/pull/3810))
+- Enabled HTTP2 support based on protocol trait definition. ([#3577](https://github.com/aws/aws-sdk-js-v3/pull/3577))
+- Added support for multi-region sigv4a signer. ([#3518](https://github.com/aws/aws-sdk-js-v3/pull/3518))
 
 ### Bug Fixes
 
-* Fixed README generation to handle service documentation containing `${}`. ([#3834](https://github.com/aws/aws-sdk-js-v3/pull/3834))
-* Fixed error code parsing when it is a number. ([#3371](https://github.com/aws/aws-sdk-js-v3/pull/3371))
-* Fixed serialization of event stream payloads. ([#3655](https://github.com/aws/aws-sdk-js-v3/pull/3655))
-* Fixed endpoints for S3's WriteGetObjectResponse. ([#3662](https://github.com/aws/aws-sdk-js-v3/pull/3662))
-* Fixed handling of empty xml tags. ([#3623](https://github.com/aws/aws-sdk-js-v3/pull/3623))
+- Fixed README generation to handle service documentation containing `${}`. ([#3834](https://github.com/aws/aws-sdk-js-v3/pull/3834))
+- Fixed error code parsing when it is a number. ([#3371](https://github.com/aws/aws-sdk-js-v3/pull/3371))
+- Fixed serialization of event stream payloads. ([#3655](https://github.com/aws/aws-sdk-js-v3/pull/3655))
+- Fixed endpoints for S3's WriteGetObjectResponse. ([#3662](https://github.com/aws/aws-sdk-js-v3/pull/3662))
+- Fixed handling of empty xml tags. ([#3623](https://github.com/aws/aws-sdk-js-v3/pull/3623))
 
 ## 0.11.0 (2022-04-04)
 
 ### Features
 
-* Updated Smithy version to `1.19.x`. ([#3507](https://github.com/aws/aws-sdk-js-v3/pull/3507))
+- Updated Smithy version to `1.19.x`. ([#3507](https://github.com/aws/aws-sdk-js-v3/pull/3507))
 
 ## 0.10.0 (2022-03-02)
 
 ### Features
 
-* Added http checksum dependency integration. ([#3346](https://github.com/aws/aws-sdk-js-v3/pull/3346), [#3349](https://github.com/aws/aws-sdk-js-v3/pull/3349))
+- Added http checksum dependency integration. ([#3346](https://github.com/aws/aws-sdk-js-v3/pull/3346), [#3349](https://github.com/aws/aws-sdk-js-v3/pull/3349))
 
 ### Bug Fixes
 
-* Disabled bucket endpoint plugin in WriteGetObjectResponseCommand. ([#3344](https://github.com/aws/aws-sdk-js-v3/pull/3344))
-* Fixed set deserialization in SSDKs. ([#3322](https://github.com/aws/aws-sdk-js-v3/pull/3322))
+- Disabled bucket endpoint plugin in WriteGetObjectResponseCommand. ([#3344](https://github.com/aws/aws-sdk-js-v3/pull/3344))
+- Fixed set deserialization in SSDKs. ([#3322](https://github.com/aws/aws-sdk-js-v3/pull/3322))
 
 ## 0.9.0 (2022-02-14)
 
 ### Features
 
-* Updated Smithy version to `1.17.0`. ([#3288](https://github.com/aws/aws-sdk-js-v3/pull/3288))
-* Added support for `defaultsMode`. ([#3192](https://github.com/aws/aws-sdk-js-v3/pull/3192))
+- Updated Smithy version to `1.17.0`. ([#3288](https://github.com/aws/aws-sdk-js-v3/pull/3288))
+- Added support for `defaultsMode`. ([#3192](https://github.com/aws/aws-sdk-js-v3/pull/3192))
 
 ## 0.8.0 (2021-11-23)
 
 ### Features
 
-* Updated EndpointGenerator to merge variants from partition defaults and service defaults using tags as unique key. ([#2989](https://github.com/aws/aws-sdk-js-v3/pull/2989), [#2990](https://github.com/aws/aws-sdk-js-v3/pull/2990), [#3044](https://github.com/aws/aws-sdk-js-v3/pull/3044))
-* Centralized Smithy version for Smithy dependencies including Smithy CLI. ([#3011](https://github.com/aws/aws-sdk-js-v3/pull/3011), [#3054](https://github.com/aws/aws-sdk-js-v3/pull/3054))
-* Updated Smithy version to `1.14.x`. ([#3053](https://github.com/aws/aws-sdk-js-v3/pull/3053))
+- Updated EndpointGenerator to merge variants from partition defaults and service defaults using tags as unique key. ([#2989](https://github.com/aws/aws-sdk-js-v3/pull/2989), [#2990](https://github.com/aws/aws-sdk-js-v3/pull/2990), [#3044](https://github.com/aws/aws-sdk-js-v3/pull/3044))
+- Centralized Smithy version for Smithy dependencies including Smithy CLI. ([#3011](https://github.com/aws/aws-sdk-js-v3/pull/3011), [#3054](https://github.com/aws/aws-sdk-js-v3/pull/3054))
+- Updated Smithy version to `1.14.x`. ([#3053](https://github.com/aws/aws-sdk-js-v3/pull/3053))
 
 ## 0.7.1 (2021-11-04)
 
 ### Bug Fixes
 
-* Fixed generator to not rely on unreleased features.
+- Fixed generator to not rely on unreleased features.
 
 ## 0.7.0 (2021-11-03)
 
 ### Features
 
-* Updated set deserialization to reject duplicates. ([#2764](https://github.com/aws/aws-sdk-js-v3/pull/2764))
-* Updated collection deserialization to reject null in non-sparse collections. ([#2771](https://github.com/aws/aws-sdk-js-v3/pull/2771))
-* Moved source files to `src` folder. ([#2844](https://github.com/aws/aws-sdk-js-v3/pull/2844))
-* packageInfo imports from user agent module are now automatically ignored. ([#2875](https://github.com/aws/aws-sdk-js-v3/pull/2875))
-* Updated Smithy version to `1.12.0`. ([#2878](https://github.com/aws/aws-sdk-js-v3/pull/2878))
+- Updated set deserialization to reject duplicates. ([#2764](https://github.com/aws/aws-sdk-js-v3/pull/2764))
+- Updated collection deserialization to reject null in non-sparse collections. ([#2771](https://github.com/aws/aws-sdk-js-v3/pull/2771))
+- Moved source files to `src` folder. ([#2844](https://github.com/aws/aws-sdk-js-v3/pull/2844))
+- packageInfo imports from user agent module are now automatically ignored. ([#2875](https://github.com/aws/aws-sdk-js-v3/pull/2875))
+- Updated Smithy version to `1.12.0`. ([#2878](https://github.com/aws/aws-sdk-js-v3/pull/2878))
 
 ## 0.6.0 (2021-09-02)
 
 ### Features
 
-* Added support for malformed request tests. ([#2695](https://github.com/aws/aws-sdk-js-v3/pull/2695))
-* Made endpoints resolution modular. ([#2704](https://github.com/aws/aws-sdk-js-v3/pull/2704))
-* Updated number parsing to be stricter. ([#2662](https://github.com/aws/aws-sdk-js-v3/pull/2662), [#2719](https://github.com/aws/aws-sdk-js-v3/pull/2719))
-* Reintroduced CORS retry headers for supported services. ([#2658](https://github.com/aws/aws-sdk-js-v3/pull/2658))
+- Added support for malformed request tests. ([#2695](https://github.com/aws/aws-sdk-js-v3/pull/2695))
+- Made endpoints resolution modular. ([#2704](https://github.com/aws/aws-sdk-js-v3/pull/2704))
+- Updated number parsing to be stricter. ([#2662](https://github.com/aws/aws-sdk-js-v3/pull/2662), [#2719](https://github.com/aws/aws-sdk-js-v3/pull/2719))
+- Reintroduced CORS retry headers for supported services. ([#2658](https://github.com/aws/aws-sdk-js-v3/pull/2658))
 
 ### Bug Fixes
 
-* Fixed double encoding of presigned url. ([#2711](https://github.com/aws/aws-sdk-js-v3/pull/2711))
-* Only trim xml tag values which contain newline. ([#2653](https://github.com/aws/aws-sdk-js-v3/pull/2653))
+- Fixed double encoding of presigned url. ([#2711](https://github.com/aws/aws-sdk-js-v3/pull/2711))
+- Only trim xml tag values which contain newline. ([#2653](https://github.com/aws/aws-sdk-js-v3/pull/2653))
 
 ### Other
 
-* Updated `smithy-typescript-codegen` dependency to `0.6.0`.
-* Updated `smithy` dependencies to `1.11.x`.
+- Updated `smithy-typescript-codegen` dependency to `0.6.0`.
+- Updated `smithy` dependencies to `1.11.x`.
 
 ## 0.5.0 (2021-07-23)
 
 ### Features
 
-* Updated `smithy-typescript-codegen` dependency to `0.5.0`.
+- Updated `smithy-typescript-codegen` dependency to `0.5.0`.
diff --git a/codegen/build.gradle.kts b/codegen/build.gradle.kts
index 4fd84b139fd38..49efb69632d55 100644
--- a/codegen/build.gradle.kts
+++ b/codegen/build.gradle.kts
@@ -32,7 +32,7 @@ allprojects {
         mavenCentral()
     }
     group = "software.amazon.smithy.typescript"
-    version = "0.37.0"
+    version = "0.38.0"
 }
 
 // The root project doesn't produce a JAR.
diff --git a/codegen/gradle.properties b/codegen/gradle.properties
index 47bc5c0211b28..78f38dbccd699 100644
--- a/codegen/gradle.properties
+++ b/codegen/gradle.properties
@@ -1,4 +1,4 @@
-smithyVersion=1.63.0
+smithyVersion=1.64.0
 smithyGradleVersion=1.3.0
 org.gradle.jvmargs=-Xmx4096M
 org.gradle.configuration-cache=true
\ No newline at end of file
diff --git a/codegen/smithy-aws-typescript-codegen/build.gradle.kts b/codegen/smithy-aws-typescript-codegen/build.gradle.kts
index 8fc3473b4fcca..a808087e0ff3c 100644
--- a/codegen/smithy-aws-typescript-codegen/build.gradle.kts
+++ b/codegen/smithy-aws-typescript-codegen/build.gradle.kts
@@ -43,7 +43,7 @@ buildscript {
 
 dependencies {
     // Smithy TypeScript
-    api("software.amazon.smithy.typescript:smithy-typescript-codegen:0.37.0")
+    api("software.amazon.smithy.typescript:smithy-typescript-codegen:0.38.0")
 
     // Smithy generic dependencies
     api("software.amazon.smithy:smithy-model:$smithyVersion")
diff --git a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsProtocolUtils.java b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsProtocolUtils.java
index 91ecc1759703a..0a6f22320c700 100644
--- a/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsProtocolUtils.java
+++ b/codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/AwsProtocolUtils.java
@@ -38,6 +38,7 @@
 import software.amazon.smithy.model.shapes.ShapeId;
 import software.amazon.smithy.model.shapes.ShapeVisitor;
 import software.amazon.smithy.model.traits.IdempotencyTokenTrait;
+import software.amazon.smithy.model.traits.StreamingTrait;
 import software.amazon.smithy.model.traits.TimestampFormatTrait;
 import software.amazon.smithy.model.traits.TimestampFormatTrait.Format;
 import software.amazon.smithy.model.traits.XmlNamespaceTrait;
@@ -104,7 +105,14 @@ static void generateDocumentBodyShapeSerde(
         Walker shapeWalker = new Walker(NeighborProviderIndex.of(context.getModel()).getProvider());
         Set<Shape> shapesToGenerate = new TreeSet<>(shapes);
         shapes.forEach(shape -> shapesToGenerate.addAll(shapeWalker.walkShapes(shape)));
-        shapesToGenerate.forEach(shape -> shape.accept(visitor));
+        shapesToGenerate.forEach(shape -> {
+            boolean isEventStream = shape.isUnionShape() && shape.hasTrait(StreamingTrait.class);
+
+            if (!isEventStream) {
+                // event streams have a separate serde.
+                shape.accept(visitor);
+            }
+        });
     }
 
     /**
diff --git a/private/aws-protocoltests-ec2-schema/README.md b/private/aws-protocoltests-ec2-schema/README.md
index 5f4dc7c4f86b8..5e79da4e58b24 100644
--- a/private/aws-protocoltests-ec2-schema/README.md
+++ b/private/aws-protocoltests-ec2-schema/README.md
@@ -1018,6 +1018,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1162,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1242,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1650,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-ec2/README.md b/private/aws-protocoltests-ec2/README.md
index 344e6628801cf..057ec42312b3a 100644
--- a/private/aws-protocoltests-ec2/README.md
+++ b/private/aws-protocoltests-ec2/README.md
@@ -1018,6 +1018,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1162,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1242,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1650,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/ec2-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-ec2-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-json-10-schema/README.md b/private/aws-protocoltests-json-10-schema/README.md
index 61ea3ddd61002..e6514a6985cea 100644
--- a/private/aws-protocoltests-json-10-schema/README.md
+++ b/private/aws-protocoltests-json-10-schema/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-json-10/README.md b/private/aws-protocoltests-json-10/README.md
index 10a0aa3a65afa..e875fa33ebe39 100644
--- a/private/aws-protocoltests-json-10/README.md
+++ b/private/aws-protocoltests-json-10/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-rpc-10/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-rpc-10/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-json-machinelearning/README.md b/private/aws-protocoltests-json-machinelearning/README.md
index b0cdc0c26be47..19f2437ba93d9 100644
--- a/private/aws-protocoltests-json-machinelearning/README.md
+++ b/private/aws-protocoltests-json-machinelearning/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-json-schema-machinelearning/README.md b/private/aws-protocoltests-json-schema-machinelearning/README.md
index e4d5942dd7b42..e34d6a6a30bbf 100644
--- a/private/aws-protocoltests-json-schema-machinelearning/README.md
+++ b/private/aws-protocoltests-json-schema-machinelearning/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/machine-learning/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-machine-learning/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-json-schema/README.md b/private/aws-protocoltests-json-schema/README.md
index a91e5ad73b1a3..c841dccf475e2 100644
--- a/private/aws-protocoltests-json-schema/README.md
+++ b/private/aws-protocoltests-json-schema/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-json/README.md b/private/aws-protocoltests-json/README.md
index 6ddb65b9d4d20..bd370b5075202 100644
--- a/private/aws-protocoltests-json/README.md
+++ b/private/aws-protocoltests-json/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/json-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-json-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-query-schema/README.md b/private/aws-protocoltests-query-schema/README.md
index 13f053e524085..6534563df847a 100644
--- a/private/aws-protocoltests-query-schema/README.md
+++ b/private/aws-protocoltests-query-schema/README.md
@@ -1018,6 +1018,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1162,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1242,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1650,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-query/README.md b/private/aws-protocoltests-query/README.md
index 323c114fdef63..3bc19d1fbc6f5 100644
--- a/private/aws-protocoltests-query/README.md
+++ b/private/aws-protocoltests-query/README.md
@@ -1018,6 +1018,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1162,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1242,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1650,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/query-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-query-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson-apigateway/README.md b/private/aws-protocoltests-restjson-apigateway/README.md
index c7914abdc7fb4..017850a6fcacc 100644
--- a/private/aws-protocoltests-restjson-apigateway/README.md
+++ b/private/aws-protocoltests-restjson-apigateway/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson-glacier/README.md b/private/aws-protocoltests-restjson-glacier/README.md
index 40aebf834e0f4..c26a8d5502c4c 100644
--- a/private/aws-protocoltests-restjson-glacier/README.md
+++ b/private/aws-protocoltests-restjson-glacier/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson-schema-apigateway/README.md b/private/aws-protocoltests-restjson-schema-apigateway/README.md
index 3df0ef6a5f44d..c8122d24d6b12 100644
--- a/private/aws-protocoltests-restjson-schema-apigateway/README.md
+++ b/private/aws-protocoltests-restjson-schema-apigateway/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/api-gateway/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-api-gateway/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson-schema-glacier/README.md b/private/aws-protocoltests-restjson-schema-glacier/README.md
index fd2b5be4ae0c3..5e83c53d9e60e 100644
--- a/private/aws-protocoltests-restjson-schema-glacier/README.md
+++ b/private/aws-protocoltests-restjson-schema-glacier/README.md
@@ -1016,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1136,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1208,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1600,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/glacier/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-glacier/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson-schema/README.md b/private/aws-protocoltests-restjson-schema/README.md
index aab3effda1416..5da52a10060b0 100644
--- a/private/aws-protocoltests-restjson-schema/README.md
+++ b/private/aws-protocoltests-restjson-schema/README.md
@@ -6,8 +6,6 @@
 
 AWS SDK for JavaScript RestJsonProtocol Client for Node.js, Browser and React Native.
 
-A REST JSON service that sends JSON requests and responses.
-
 ## Installing
 
 To install this package, simply type add or install @aws-sdk/aws-protocoltests-restjson-schema
@@ -23,16 +21,16 @@ using your favorite package manager:
 
 The AWS SDK is modulized by clients and commands.
 To send a request, you only need to import the `RestJsonProtocolClient` and
-the commands you need, for example `JsonBlobsCommand`:
+the commands you need, for example `InputStreamCommand`:
 
 ```js
 // ES5 example
-const { RestJsonProtocolClient, JsonBlobsCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema");
+const { RestJsonProtocolClient, InputStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema");
 ```
 
 ```ts
 // ES6+ example
-import { RestJsonProtocolClient, JsonBlobsCommand } from "@aws-sdk/aws-protocoltests-restjson-schema";
+import { RestJsonProtocolClient, InputStreamCommand } from "@aws-sdk/aws-protocoltests-restjson-schema";
 ```
 
 ### Usage
@@ -51,7 +49,7 @@ const client = new RestJsonProtocolClient({ region: "REGION" });
 const params = {
   /** input parameters */
 };
-const command = new JsonBlobsCommand(params);
+const command = new InputStreamCommand(params);
 ```
 
 #### Async/await
@@ -130,7 +128,7 @@ const client = new AWS.RestJsonProtocol({ region: "REGION" });
 
 // async/await.
 try {
-  const data = await client.jsonBlobs(params);
+  const data = await client.inputStream(params);
   // process data.
 } catch (error) {
   // error handling.
@@ -138,7 +136,7 @@ try {
 
 // Promises.
 client
-  .jsonBlobs(params)
+  .inputStream(params)
   .then((data) => {
     // process data.
   })
@@ -147,7 +145,7 @@ client
   });
 
 // callbacks.
-client.jsonBlobs(params, (err, data) => {
+client.inputStream(params, (err, data) => {
   // process err and data.
 });
 ```
@@ -1018,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson-schema/package.json b/private/aws-protocoltests-restjson-schema/package.json
index 26dda4da9a8b0..205423e6d4ad5 100644
--- a/private/aws-protocoltests-restjson-schema/package.json
+++ b/private/aws-protocoltests-restjson-schema/package.json
@@ -22,6 +22,8 @@
     "@aws-crypto/sha256-js": "5.2.0",
     "@aws-sdk/core": "*",
     "@aws-sdk/credential-provider-node": "*",
+    "@aws-sdk/eventstream-handler-node": "*",
+    "@aws-sdk/middleware-eventstream": "*",
     "@aws-sdk/middleware-host-header": "*",
     "@aws-sdk/middleware-logger": "*",
     "@aws-sdk/middleware-recursion-detection": "*",
@@ -33,6 +35,9 @@
     "@aws-sdk/util-user-agent-node": "*",
     "@smithy/config-resolver": "^4.4.3",
     "@smithy/core": "^3.18.5",
+    "@smithy/eventstream-serde-browser": "^4.2.5",
+    "@smithy/eventstream-serde-config-resolver": "^4.3.5",
+    "@smithy/eventstream-serde-node": "^4.2.5",
     "@smithy/fetch-http-handler": "^5.3.6",
     "@smithy/hash-blob-browser": "^4.2.6",
     "@smithy/hash-node": "^4.2.5",
diff --git a/private/aws-protocoltests-restjson-schema/src/RestJsonProtocol.ts b/private/aws-protocoltests-restjson-schema/src/RestJsonProtocol.ts
index 09c418beedef1..0f27ea4c5ea3c 100644
--- a/private/aws-protocoltests-restjson-schema/src/RestJsonProtocol.ts
+++ b/private/aws-protocoltests-restjson-schema/src/RestJsonProtocol.ts
@@ -42,6 +42,21 @@ import {
   DocumentTypeCommandInput,
   DocumentTypeCommandOutput,
 } from "./commands/DocumentTypeCommand";
+import {
+  DuplexStreamCommand,
+  DuplexStreamCommandInput,
+  DuplexStreamCommandOutput,
+} from "./commands/DuplexStreamCommand";
+import {
+  DuplexStreamWithDistinctStreamsCommand,
+  DuplexStreamWithDistinctStreamsCommandInput,
+  DuplexStreamWithDistinctStreamsCommandOutput,
+} from "./commands/DuplexStreamWithDistinctStreamsCommand";
+import {
+  DuplexStreamWithInitialMessagesCommand,
+  DuplexStreamWithInitialMessagesCommandInput,
+  DuplexStreamWithInitialMessagesCommandOutput,
+} from "./commands/DuplexStreamWithInitialMessagesCommand";
 import {
   EmptyInputAndEmptyOutputCommand,
   EmptyInputAndEmptyOutputCommandInput,
@@ -117,6 +132,11 @@ import {
   HttpPrefixHeadersInResponseCommandInput,
   HttpPrefixHeadersInResponseCommandOutput,
 } from "./commands/HttpPrefixHeadersInResponseCommand";
+import {
+  HttpQueryParamsOnlyOperationCommand,
+  HttpQueryParamsOnlyOperationCommandInput,
+  HttpQueryParamsOnlyOperationCommandOutput,
+} from "./commands/HttpQueryParamsOnlyOperationCommand";
 import {
   HttpRequestWithFloatLabelsCommand,
   HttpRequestWithFloatLabelsCommandInput,
@@ -162,6 +182,12 @@ import {
   InputAndOutputWithHeadersCommandInput,
   InputAndOutputWithHeadersCommandOutput,
 } from "./commands/InputAndOutputWithHeadersCommand";
+import { InputStreamCommand, InputStreamCommandInput, InputStreamCommandOutput } from "./commands/InputStreamCommand";
+import {
+  InputStreamWithInitialRequestCommand,
+  InputStreamWithInitialRequestCommandInput,
+  InputStreamWithInitialRequestCommandOutput,
+} from "./commands/InputStreamWithInitialRequestCommand";
 import { JsonBlobsCommand, JsonBlobsCommandInput, JsonBlobsCommandOutput } from "./commands/JsonBlobsCommand";
 import { JsonEnumsCommand, JsonEnumsCommandInput, JsonEnumsCommandOutput } from "./commands/JsonEnumsCommand";
 import {
@@ -387,6 +413,16 @@ import {
   OperationWithNestedStructureCommandInput,
   OperationWithNestedStructureCommandOutput,
 } from "./commands/OperationWithNestedStructureCommand";
+import {
+  OutputStreamCommand,
+  OutputStreamCommandInput,
+  OutputStreamCommandOutput,
+} from "./commands/OutputStreamCommand";
+import {
+  OutputStreamWithInitialResponseCommand,
+  OutputStreamWithInitialResponseCommandInput,
+  OutputStreamWithInitialResponseCommandOutput,
+} from "./commands/OutputStreamWithInitialResponseCommand";
 import {
   PostPlayerActionCommand,
   PostPlayerActionCommandInput,
@@ -518,6 +554,9 @@ const commands = {
   DocumentTypeCommand,
   DocumentTypeAsMapValueCommand,
   DocumentTypeAsPayloadCommand,
+  DuplexStreamCommand,
+  DuplexStreamWithDistinctStreamsCommand,
+  DuplexStreamWithInitialMessagesCommand,
   EmptyInputAndEmptyOutputCommand,
   EndpointOperationCommand,
   EndpointWithHostLabelOperationCommand,
@@ -533,6 +572,7 @@ const commands = {
   HttpPayloadWithUnionCommand,
   HttpPrefixHeadersCommand,
   HttpPrefixHeadersInResponseCommand,
+  HttpQueryParamsOnlyOperationCommand,
   HttpRequestWithFloatLabelsCommand,
   HttpRequestWithGreedyLabelInPathCommand,
   HttpRequestWithLabelsCommand,
@@ -542,6 +582,8 @@ const commands = {
   HttpStringPayloadCommand,
   IgnoreQueryParamsInResponseCommand,
   InputAndOutputWithHeadersCommand,
+  InputStreamCommand,
+  InputStreamWithInitialRequestCommand,
   JsonBlobsCommand,
   JsonEnumsCommand,
   JsonIntEnumsCommand,
@@ -591,6 +633,8 @@ const commands = {
   OmitsSerializingEmptyListsCommand,
   OperationWithDefaultsCommand,
   OperationWithNestedStructureCommand,
+  OutputStreamCommand,
+  OutputStreamWithInitialResponseCommand,
   PostPlayerActionCommand,
   PostUnionWithJsonNameCommand,
   PutWithContentEncodingCommand,
@@ -752,6 +796,53 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: DocumentTypeAsPayloadCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link DuplexStreamCommand}
+   */
+  duplexStream(): Promise<DuplexStreamCommandOutput>;
+  duplexStream(args: DuplexStreamCommandInput, options?: __HttpHandlerOptions): Promise<DuplexStreamCommandOutput>;
+  duplexStream(args: DuplexStreamCommandInput, cb: (err: any, data?: DuplexStreamCommandOutput) => void): void;
+  duplexStream(
+    args: DuplexStreamCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: DuplexStreamCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link DuplexStreamWithDistinctStreamsCommand}
+   */
+  duplexStreamWithDistinctStreams(): Promise<DuplexStreamWithDistinctStreamsCommandOutput>;
+  duplexStreamWithDistinctStreams(
+    args: DuplexStreamWithDistinctStreamsCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<DuplexStreamWithDistinctStreamsCommandOutput>;
+  duplexStreamWithDistinctStreams(
+    args: DuplexStreamWithDistinctStreamsCommandInput,
+    cb: (err: any, data?: DuplexStreamWithDistinctStreamsCommandOutput) => void
+  ): void;
+  duplexStreamWithDistinctStreams(
+    args: DuplexStreamWithDistinctStreamsCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: DuplexStreamWithDistinctStreamsCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link DuplexStreamWithInitialMessagesCommand}
+   */
+  duplexStreamWithInitialMessages(
+    args: DuplexStreamWithInitialMessagesCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<DuplexStreamWithInitialMessagesCommandOutput>;
+  duplexStreamWithInitialMessages(
+    args: DuplexStreamWithInitialMessagesCommandInput,
+    cb: (err: any, data?: DuplexStreamWithInitialMessagesCommandOutput) => void
+  ): void;
+  duplexStreamWithInitialMessages(
+    args: DuplexStreamWithInitialMessagesCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: DuplexStreamWithInitialMessagesCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link EmptyInputAndEmptyOutputCommand}
    */
@@ -1018,6 +1109,24 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: HttpPrefixHeadersInResponseCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link HttpQueryParamsOnlyOperationCommand}
+   */
+  httpQueryParamsOnlyOperation(): Promise<HttpQueryParamsOnlyOperationCommandOutput>;
+  httpQueryParamsOnlyOperation(
+    args: HttpQueryParamsOnlyOperationCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<HttpQueryParamsOnlyOperationCommandOutput>;
+  httpQueryParamsOnlyOperation(
+    args: HttpQueryParamsOnlyOperationCommandInput,
+    cb: (err: any, data?: HttpQueryParamsOnlyOperationCommandOutput) => void
+  ): void;
+  httpQueryParamsOnlyOperation(
+    args: HttpQueryParamsOnlyOperationCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: HttpQueryParamsOnlyOperationCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link HttpRequestWithFloatLabelsCommand}
    */
@@ -1175,6 +1284,35 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: InputAndOutputWithHeadersCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link InputStreamCommand}
+   */
+  inputStream(): Promise<InputStreamCommandOutput>;
+  inputStream(args: InputStreamCommandInput, options?: __HttpHandlerOptions): Promise<InputStreamCommandOutput>;
+  inputStream(args: InputStreamCommandInput, cb: (err: any, data?: InputStreamCommandOutput) => void): void;
+  inputStream(
+    args: InputStreamCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: InputStreamCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link InputStreamWithInitialRequestCommand}
+   */
+  inputStreamWithInitialRequest(
+    args: InputStreamWithInitialRequestCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<InputStreamWithInitialRequestCommandOutput>;
+  inputStreamWithInitialRequest(
+    args: InputStreamWithInitialRequestCommandInput,
+    cb: (err: any, data?: InputStreamWithInitialRequestCommandOutput) => void
+  ): void;
+  inputStreamWithInitialRequest(
+    args: InputStreamWithInitialRequestCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: InputStreamWithInitialRequestCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link JsonBlobsCommand}
    */
@@ -1950,6 +2088,36 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: OperationWithNestedStructureCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link OutputStreamCommand}
+   */
+  outputStream(): Promise<OutputStreamCommandOutput>;
+  outputStream(args: OutputStreamCommandInput, options?: __HttpHandlerOptions): Promise<OutputStreamCommandOutput>;
+  outputStream(args: OutputStreamCommandInput, cb: (err: any, data?: OutputStreamCommandOutput) => void): void;
+  outputStream(
+    args: OutputStreamCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: OutputStreamCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link OutputStreamWithInitialResponseCommand}
+   */
+  outputStreamWithInitialResponse(): Promise<OutputStreamWithInitialResponseCommandOutput>;
+  outputStreamWithInitialResponse(
+    args: OutputStreamWithInitialResponseCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<OutputStreamWithInitialResponseCommandOutput>;
+  outputStreamWithInitialResponse(
+    args: OutputStreamWithInitialResponseCommandInput,
+    cb: (err: any, data?: OutputStreamWithInitialResponseCommandOutput) => void
+  ): void;
+  outputStreamWithInitialResponse(
+    args: OutputStreamWithInitialResponseCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: OutputStreamWithInitialResponseCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link PostPlayerActionCommand}
    */
@@ -2366,7 +2534,6 @@ export interface RestJsonProtocol {
 }
 
 /**
- * A REST JSON service that sends JSON requests and responses.
  * @public
  */
 export class RestJsonProtocol extends RestJsonProtocolClient implements RestJsonProtocol {}
diff --git a/private/aws-protocoltests-restjson-schema/src/RestJsonProtocolClient.ts b/private/aws-protocoltests-restjson-schema/src/RestJsonProtocolClient.ts
index 41820d1c15b4e..6df4bda298cde 100644
--- a/private/aws-protocoltests-restjson-schema/src/RestJsonProtocolClient.ts
+++ b/private/aws-protocoltests-restjson-schema/src/RestJsonProtocolClient.ts
@@ -1,4 +1,9 @@
 // smithy-typescript generated code
+import {
+  EventStreamInputConfig,
+  EventStreamResolvedConfig,
+  resolveEventStreamConfig,
+} from "@aws-sdk/middleware-eventstream";
 import {
   getHostHeaderPlugin,
   HostHeaderInputConfig,
@@ -13,6 +18,7 @@ import {
   UserAgentInputConfig,
   UserAgentResolvedConfig,
 } from "@aws-sdk/middleware-user-agent";
+import { EventStreamPayloadHandlerProvider as __EventStreamPayloadHandlerProvider } from "@aws-sdk/types";
 import {
   DefaultAwsRegionalEndpointsInputConfig,
   DefaultAwsRegionalEndpointsResolvedConfig,
@@ -25,6 +31,11 @@ import {
   getHttpSigningPlugin,
 } from "@smithy/core";
 import { getSchemaSerdePlugin } from "@smithy/core/schema";
+import {
+  EventStreamSerdeInputConfig,
+  EventStreamSerdeResolvedConfig,
+  resolveEventStreamSerdeConfig,
+} from "@smithy/eventstream-serde-config-resolver";
 import {
   CompressionInputConfig,
   CompressionResolvedConfig,
@@ -50,6 +61,7 @@ import {
   Decoder as __Decoder,
   Encoder as __Encoder,
   EndpointV2 as __EndpointV2,
+  EventStreamSerdeProvider as __EventStreamSerdeProvider,
   HashConstructor as __HashConstructor,
   HttpHandlerOptions as __HttpHandlerOptions,
   HttpRequest,
@@ -97,6 +109,15 @@ import {
   DocumentTypeAsPayloadCommandOutput,
 } from "./commands/DocumentTypeAsPayloadCommand";
 import { DocumentTypeCommandInput, DocumentTypeCommandOutput } from "./commands/DocumentTypeCommand";
+import { DuplexStreamCommandInput, DuplexStreamCommandOutput } from "./commands/DuplexStreamCommand";
+import {
+  DuplexStreamWithDistinctStreamsCommandInput,
+  DuplexStreamWithDistinctStreamsCommandOutput,
+} from "./commands/DuplexStreamWithDistinctStreamsCommand";
+import {
+  DuplexStreamWithInitialMessagesCommandInput,
+  DuplexStreamWithInitialMessagesCommandOutput,
+} from "./commands/DuplexStreamWithInitialMessagesCommand";
 import {
   EmptyInputAndEmptyOutputCommandInput,
   EmptyInputAndEmptyOutputCommandOutput,
@@ -139,6 +160,10 @@ import {
   HttpPrefixHeadersInResponseCommandInput,
   HttpPrefixHeadersInResponseCommandOutput,
 } from "./commands/HttpPrefixHeadersInResponseCommand";
+import {
+  HttpQueryParamsOnlyOperationCommandInput,
+  HttpQueryParamsOnlyOperationCommandOutput,
+} from "./commands/HttpQueryParamsOnlyOperationCommand";
 import {
   HttpRequestWithFloatLabelsCommandInput,
   HttpRequestWithFloatLabelsCommandOutput,
@@ -169,6 +194,11 @@ import {
   InputAndOutputWithHeadersCommandInput,
   InputAndOutputWithHeadersCommandOutput,
 } from "./commands/InputAndOutputWithHeadersCommand";
+import { InputStreamCommandInput, InputStreamCommandOutput } from "./commands/InputStreamCommand";
+import {
+  InputStreamWithInitialRequestCommandInput,
+  InputStreamWithInitialRequestCommandOutput,
+} from "./commands/InputStreamWithInitialRequestCommand";
 import { JsonBlobsCommandInput, JsonBlobsCommandOutput } from "./commands/JsonBlobsCommand";
 import { JsonEnumsCommandInput, JsonEnumsCommandOutput } from "./commands/JsonEnumsCommand";
 import { JsonIntEnumsCommandInput, JsonIntEnumsCommandOutput } from "./commands/JsonIntEnumsCommand";
@@ -299,6 +329,11 @@ import {
   OperationWithNestedStructureCommandInput,
   OperationWithNestedStructureCommandOutput,
 } from "./commands/OperationWithNestedStructureCommand";
+import { OutputStreamCommandInput, OutputStreamCommandOutput } from "./commands/OutputStreamCommand";
+import {
+  OutputStreamWithInitialResponseCommandInput,
+  OutputStreamWithInitialResponseCommandOutput,
+} from "./commands/OutputStreamWithInitialResponseCommand";
 import { PostPlayerActionCommandInput, PostPlayerActionCommandOutput } from "./commands/PostPlayerActionCommand";
 import {
   PostUnionWithJsonNameCommandInput,
@@ -385,6 +420,9 @@ export type ServiceInputTypes =
   | DocumentTypeAsMapValueCommandInput
   | DocumentTypeAsPayloadCommandInput
   | DocumentTypeCommandInput
+  | DuplexStreamCommandInput
+  | DuplexStreamWithDistinctStreamsCommandInput
+  | DuplexStreamWithInitialMessagesCommandInput
   | EmptyInputAndEmptyOutputCommandInput
   | EndpointOperationCommandInput
   | EndpointWithHostLabelOperationCommandInput
@@ -400,6 +438,7 @@ export type ServiceInputTypes =
   | HttpPayloadWithUnionCommandInput
   | HttpPrefixHeadersCommandInput
   | HttpPrefixHeadersInResponseCommandInput
+  | HttpQueryParamsOnlyOperationCommandInput
   | HttpRequestWithFloatLabelsCommandInput
   | HttpRequestWithGreedyLabelInPathCommandInput
   | HttpRequestWithLabelsAndTimestampFormatCommandInput
@@ -409,6 +448,8 @@ export type ServiceInputTypes =
   | HttpStringPayloadCommandInput
   | IgnoreQueryParamsInResponseCommandInput
   | InputAndOutputWithHeadersCommandInput
+  | InputStreamCommandInput
+  | InputStreamWithInitialRequestCommandInput
   | JsonBlobsCommandInput
   | JsonEnumsCommandInput
   | JsonIntEnumsCommandInput
@@ -458,6 +499,8 @@ export type ServiceInputTypes =
   | OmitsSerializingEmptyListsCommandInput
   | OperationWithDefaultsCommandInput
   | OperationWithNestedStructureCommandInput
+  | OutputStreamCommandInput
+  | OutputStreamWithInitialResponseCommandInput
   | PostPlayerActionCommandInput
   | PostUnionWithJsonNameCommandInput
   | PutWithContentEncodingCommandInput
@@ -495,6 +538,9 @@ export type ServiceOutputTypes =
   | DocumentTypeAsMapValueCommandOutput
   | DocumentTypeAsPayloadCommandOutput
   | DocumentTypeCommandOutput
+  | DuplexStreamCommandOutput
+  | DuplexStreamWithDistinctStreamsCommandOutput
+  | DuplexStreamWithInitialMessagesCommandOutput
   | EmptyInputAndEmptyOutputCommandOutput
   | EndpointOperationCommandOutput
   | EndpointWithHostLabelOperationCommandOutput
@@ -510,6 +556,7 @@ export type ServiceOutputTypes =
   | HttpPayloadWithUnionCommandOutput
   | HttpPrefixHeadersCommandOutput
   | HttpPrefixHeadersInResponseCommandOutput
+  | HttpQueryParamsOnlyOperationCommandOutput
   | HttpRequestWithFloatLabelsCommandOutput
   | HttpRequestWithGreedyLabelInPathCommandOutput
   | HttpRequestWithLabelsAndTimestampFormatCommandOutput
@@ -519,6 +566,8 @@ export type ServiceOutputTypes =
   | HttpStringPayloadCommandOutput
   | IgnoreQueryParamsInResponseCommandOutput
   | InputAndOutputWithHeadersCommandOutput
+  | InputStreamCommandOutput
+  | InputStreamWithInitialRequestCommandOutput
   | JsonBlobsCommandOutput
   | JsonEnumsCommandOutput
   | JsonIntEnumsCommandOutput
@@ -568,6 +617,8 @@ export type ServiceOutputTypes =
   | OmitsSerializingEmptyListsCommandOutput
   | OperationWithDefaultsCommandOutput
   | OperationWithNestedStructureCommandOutput
+  | OutputStreamCommandOutput
+  | OutputStreamWithInitialResponseCommandOutput
   | PostPlayerActionCommandOutput
   | PostUnionWithJsonNameCommandOutput
   | PutWithContentEncodingCommandOutput
@@ -748,6 +799,11 @@ export interface ClientDefaults extends Partial<__SmithyConfiguration<__HttpHand
    */
   protocol?: ClientProtocol<HttpRequest, HttpResponse>;
 
+  /**
+   * The function that provides necessary utilities for generating and parsing event stream
+   */
+  eventStreamSerdeProvider?: __EventStreamSerdeProvider;
+
   /**
    * A function that, given a hash constructor and a stream, calculates the
    * hash of the streamed value.
@@ -767,6 +823,12 @@ export interface ClientDefaults extends Partial<__SmithyConfiguration<__HttpHand
    */
   defaultsMode?: __DefaultsMode | __Provider<__DefaultsMode>;
 
+  /**
+   * The function that provides necessary utilities for handling request event stream.
+   * @internal
+   */
+  eventStreamPayloadHandlerProvider?: __EventStreamPayloadHandlerProvider;
+
   /**
    * The internal function that inject utilities to runtime-specific stream to help users consume the data
    * @internal
@@ -785,7 +847,9 @@ export type RestJsonProtocolClientConfigType = Partial<__SmithyConfiguration<__H
   HostHeaderInputConfig &
   EndpointInputConfig<EndpointParameters> &
   DefaultAwsRegionalEndpointsInputConfig &
+  EventStreamSerdeInputConfig &
   HttpAuthSchemeInputConfig &
+  EventStreamInputConfig &
   CompressionInputConfig &
   ClientInputEndpointParameters;
 /**
@@ -807,7 +871,9 @@ export type RestJsonProtocolClientResolvedConfigType = __SmithyResolvedConfigura
   HostHeaderResolvedConfig &
   EndpointResolvedConfig<EndpointParameters> &
   DefaultAwsRegionalEndpointsResolvedConfig &
+  EventStreamSerdeResolvedConfig &
   HttpAuthSchemeResolvedConfig &
+  EventStreamResolvedConfig &
   CompressionResolvedConfig &
   ClientResolvedEndpointParameters;
 /**
@@ -818,7 +884,6 @@ export type RestJsonProtocolClientResolvedConfigType = __SmithyResolvedConfigura
 export interface RestJsonProtocolClientResolvedConfig extends RestJsonProtocolClientResolvedConfigType {}
 
 /**
- * A REST JSON service that sends JSON requests and responses.
  * @public
  */
 export class RestJsonProtocolClient extends __Client<
@@ -843,10 +908,12 @@ export class RestJsonProtocolClient extends __Client<
     const _config_5 = resolveHostHeaderConfig(_config_4);
     const _config_6 = resolveEndpointConfig(_config_5);
     const _config_7 = resolveDefaultAwsRegionalEndpointsConfig(_config_6);
-    const _config_8 = resolveHttpAuthSchemeConfig(_config_7);
-    const _config_9 = resolveCompressionConfig(_config_8);
-    const _config_10 = resolveRuntimeExtensions(_config_9, configuration?.extensions || []);
-    this.config = _config_10;
+    const _config_8 = resolveEventStreamSerdeConfig(_config_7);
+    const _config_9 = resolveHttpAuthSchemeConfig(_config_8);
+    const _config_10 = resolveEventStreamConfig(_config_9);
+    const _config_11 = resolveCompressionConfig(_config_10);
+    const _config_12 = resolveRuntimeExtensions(_config_11, configuration?.extensions || []);
+    this.config = _config_12;
     this.middlewareStack.use(getSchemaSerdePlugin(this.config));
     this.middlewareStack.use(getUserAgentPlugin(this.config));
     this.middlewareStack.use(getRetryPlugin(this.config));
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamCommand.ts
new file mode 100644
index 0000000000000..83c93f284ae2a
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamCommand.ts
@@ -0,0 +1,178 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { DuplexStreamInput, DuplexStreamOutput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { DuplexStream } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link DuplexStreamCommand}.
+ */
+export interface DuplexStreamCommandInput extends DuplexStreamInput {}
+/**
+ * @public
+ *
+ * The output of {@link DuplexStreamCommand}.
+ */
+export interface DuplexStreamCommandOutput extends DuplexStreamOutput, __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, DuplexStreamCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, DuplexStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // DuplexStreamInput
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new DuplexStreamCommand(input);
+ * const response = await client.send(command);
+ * // { // DuplexStreamOutput
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param DuplexStreamCommandInput - {@link DuplexStreamCommandInput}
+ * @returns {@link DuplexStreamCommandOutput}
+ * @see {@link DuplexStreamCommandInput} for command's `input` shape.
+ * @see {@link DuplexStreamCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class DuplexStreamCommand extends $Command
+  .classBuilder<
+    DuplexStreamCommandInput,
+    DuplexStreamCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions()), getEventStreamPlugin(config)];
+  })
+  .s("RestJson", "DuplexStream", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "DuplexStreamCommand")
+  .sc(DuplexStream)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: DuplexStreamInput;
+      output: DuplexStreamOutput;
+    };
+    sdk: {
+      input: DuplexStreamCommandInput;
+      output: DuplexStreamCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamWithDistinctStreamsCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamWithDistinctStreamsCommand.ts
new file mode 100644
index 0000000000000..2e4cba2feadb0
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamWithDistinctStreamsCommand.ts
@@ -0,0 +1,143 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { DuplexStreamWithDistinctStreamsInput, DuplexStreamWithDistinctStreamsOutput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { DuplexStreamWithDistinctStreams } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link DuplexStreamWithDistinctStreamsCommand}.
+ */
+export interface DuplexStreamWithDistinctStreamsCommandInput extends DuplexStreamWithDistinctStreamsInput {}
+/**
+ * @public
+ *
+ * The output of {@link DuplexStreamWithDistinctStreamsCommand}.
+ */
+export interface DuplexStreamWithDistinctStreamsCommandOutput
+  extends DuplexStreamWithDistinctStreamsOutput,
+    __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, DuplexStreamWithDistinctStreamsCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, DuplexStreamWithDistinctStreamsCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // DuplexStreamWithDistinctStreamsInput
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new DuplexStreamWithDistinctStreamsCommand(input);
+ * const response = await client.send(command);
+ * // { // DuplexStreamWithDistinctStreamsOutput
+ * //   stream: { // SingletonEventStream Union: only one key present
+ * //     singleton: { // SingletonEvent
+ * //       value: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param DuplexStreamWithDistinctStreamsCommandInput - {@link DuplexStreamWithDistinctStreamsCommandInput}
+ * @returns {@link DuplexStreamWithDistinctStreamsCommandOutput}
+ * @see {@link DuplexStreamWithDistinctStreamsCommandInput} for command's `input` shape.
+ * @see {@link DuplexStreamWithDistinctStreamsCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class DuplexStreamWithDistinctStreamsCommand extends $Command
+  .classBuilder<
+    DuplexStreamWithDistinctStreamsCommandInput,
+    DuplexStreamWithDistinctStreamsCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions()), getEventStreamPlugin(config)];
+  })
+  .s("RestJson", "DuplexStreamWithDistinctStreams", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "DuplexStreamWithDistinctStreamsCommand")
+  .sc(DuplexStreamWithDistinctStreams)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: DuplexStreamWithDistinctStreamsInput;
+      output: DuplexStreamWithDistinctStreamsOutput;
+    };
+    sdk: {
+      input: DuplexStreamWithDistinctStreamsCommandInput;
+      output: DuplexStreamWithDistinctStreamsCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamWithInitialMessagesCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamWithInitialMessagesCommand.ts
new file mode 100644
index 0000000000000..81fa16a02f840
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/DuplexStreamWithInitialMessagesCommand.ts
@@ -0,0 +1,184 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { DuplexStreamWithInitialMessagesInput, DuplexStreamWithInitialMessagesOutput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { DuplexStreamWithInitialMessages } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link DuplexStreamWithInitialMessagesCommand}.
+ */
+export interface DuplexStreamWithInitialMessagesCommandInput extends DuplexStreamWithInitialMessagesInput {}
+/**
+ * @public
+ *
+ * The output of {@link DuplexStreamWithInitialMessagesCommand}.
+ */
+export interface DuplexStreamWithInitialMessagesCommandOutput
+  extends DuplexStreamWithInitialMessagesOutput,
+    __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, DuplexStreamWithInitialMessagesCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, DuplexStreamWithInitialMessagesCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // DuplexStreamWithInitialMessagesInput
+ *   initialRequestMember: "STRING_VALUE", // required
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new DuplexStreamWithInitialMessagesCommand(input);
+ * const response = await client.send(command);
+ * // { // DuplexStreamWithInitialMessagesOutput
+ * //   initialResponseMember: "STRING_VALUE", // required
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param DuplexStreamWithInitialMessagesCommandInput - {@link DuplexStreamWithInitialMessagesCommandInput}
+ * @returns {@link DuplexStreamWithInitialMessagesCommandOutput}
+ * @see {@link DuplexStreamWithInitialMessagesCommandInput} for command's `input` shape.
+ * @see {@link DuplexStreamWithInitialMessagesCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link ServiceUnavailableError} (server fault)
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class DuplexStreamWithInitialMessagesCommand extends $Command
+  .classBuilder<
+    DuplexStreamWithInitialMessagesCommandInput,
+    DuplexStreamWithInitialMessagesCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions()), getEventStreamPlugin(config)];
+  })
+  .s("RestJson", "DuplexStreamWithInitialMessages", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "DuplexStreamWithInitialMessagesCommand")
+  .sc(DuplexStreamWithInitialMessages)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: DuplexStreamWithInitialMessagesInput;
+      output: DuplexStreamWithInitialMessagesOutput;
+    };
+    sdk: {
+      input: DuplexStreamWithInitialMessagesCommandInput;
+      output: DuplexStreamWithInitialMessagesCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/HttpQueryParamsOnlyOperationCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/HttpQueryParamsOnlyOperationCommand.ts
new file mode 100644
index 0000000000000..c10128543f67d
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/HttpQueryParamsOnlyOperationCommand.ts
@@ -0,0 +1,89 @@
+// smithy-typescript generated code
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { HttpQueryParamsOnlyInput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { HttpQueryParamsOnlyOperation } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link HttpQueryParamsOnlyOperationCommand}.
+ */
+export interface HttpQueryParamsOnlyOperationCommandInput extends HttpQueryParamsOnlyInput {}
+/**
+ * @public
+ *
+ * The output of {@link HttpQueryParamsOnlyOperationCommand}.
+ */
+export interface HttpQueryParamsOnlyOperationCommandOutput extends __MetadataBearer {}
+
+/**
+ * This example tests httpQueryParams when no other query parameters exist.
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, HttpQueryParamsOnlyOperationCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, HttpQueryParamsOnlyOperationCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // HttpQueryParamsOnlyInput
+ *   queryMap: { // QueryMap
+ *     "<keys>": "STRING_VALUE",
+ *   },
+ * };
+ * const command = new HttpQueryParamsOnlyOperationCommand(input);
+ * const response = await client.send(command);
+ * // {};
+ *
+ * ```
+ *
+ * @param HttpQueryParamsOnlyOperationCommandInput - {@link HttpQueryParamsOnlyOperationCommandInput}
+ * @returns {@link HttpQueryParamsOnlyOperationCommandOutput}
+ * @see {@link HttpQueryParamsOnlyOperationCommandInput} for command's `input` shape.
+ * @see {@link HttpQueryParamsOnlyOperationCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ * @public
+ */
+export class HttpQueryParamsOnlyOperationCommand extends $Command
+  .classBuilder<
+    HttpQueryParamsOnlyOperationCommandInput,
+    HttpQueryParamsOnlyOperationCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions())];
+  })
+  .s("RestJson", "HttpQueryParamsOnlyOperation", {})
+  .n("RestJsonProtocolClient", "HttpQueryParamsOnlyOperationCommand")
+  .sc(HttpQueryParamsOnlyOperation)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: HttpQueryParamsOnlyInput;
+      output: {};
+    };
+    sdk: {
+      input: HttpQueryParamsOnlyOperationCommandInput;
+      output: HttpQueryParamsOnlyOperationCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/InputStreamCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/InputStreamCommand.ts
new file mode 100644
index 0000000000000..2151adefcddb8
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/InputStreamCommand.ts
@@ -0,0 +1,135 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { InputStreamInput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { InputStream } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link InputStreamCommand}.
+ */
+export interface InputStreamCommandInput extends InputStreamInput {}
+/**
+ * @public
+ *
+ * The output of {@link InputStreamCommand}.
+ */
+export interface InputStreamCommandOutput extends __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, InputStreamCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, InputStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // InputStreamInput
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new InputStreamCommand(input);
+ * const response = await client.send(command);
+ * // {};
+ *
+ * ```
+ *
+ * @param InputStreamCommandInput - {@link InputStreamCommandInput}
+ * @returns {@link InputStreamCommandOutput}
+ * @see {@link InputStreamCommandInput} for command's `input` shape.
+ * @see {@link InputStreamCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class InputStreamCommand extends $Command
+  .classBuilder<
+    InputStreamCommandInput,
+    InputStreamCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions()), getEventStreamPlugin(config)];
+  })
+  .s("RestJson", "InputStream", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "InputStreamCommand")
+  .sc(InputStream)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: InputStreamInput;
+      output: {};
+    };
+    sdk: {
+      input: InputStreamCommandInput;
+      output: InputStreamCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/InputStreamWithInitialRequestCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/InputStreamWithInitialRequestCommand.ts
new file mode 100644
index 0000000000000..873ec8acc8575
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/InputStreamWithInitialRequestCommand.ts
@@ -0,0 +1,136 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { InputStreamWithInitialRequestInput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { InputStreamWithInitialRequest } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link InputStreamWithInitialRequestCommand}.
+ */
+export interface InputStreamWithInitialRequestCommandInput extends InputStreamWithInitialRequestInput {}
+/**
+ * @public
+ *
+ * The output of {@link InputStreamWithInitialRequestCommand}.
+ */
+export interface InputStreamWithInitialRequestCommandOutput extends __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, InputStreamWithInitialRequestCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, InputStreamWithInitialRequestCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // InputStreamWithInitialRequestInput
+ *   initialRequestMember: "STRING_VALUE", // required
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new InputStreamWithInitialRequestCommand(input);
+ * const response = await client.send(command);
+ * // {};
+ *
+ * ```
+ *
+ * @param InputStreamWithInitialRequestCommandInput - {@link InputStreamWithInitialRequestCommandInput}
+ * @returns {@link InputStreamWithInitialRequestCommandOutput}
+ * @see {@link InputStreamWithInitialRequestCommandInput} for command's `input` shape.
+ * @see {@link InputStreamWithInitialRequestCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class InputStreamWithInitialRequestCommand extends $Command
+  .classBuilder<
+    InputStreamWithInitialRequestCommandInput,
+    InputStreamWithInitialRequestCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions()), getEventStreamPlugin(config)];
+  })
+  .s("RestJson", "InputStreamWithInitialRequest", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "InputStreamWithInitialRequestCommand")
+  .sc(InputStreamWithInitialRequest)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: InputStreamWithInitialRequestInput;
+      output: {};
+    };
+    sdk: {
+      input: InputStreamWithInitialRequestCommandInput;
+      output: InputStreamWithInitialRequestCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/OutputStreamCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/OutputStreamCommand.ts
new file mode 100644
index 0000000000000..cdf5c3e067e8f
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/OutputStreamCommand.ts
@@ -0,0 +1,136 @@
+// smithy-typescript generated code
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { OutputStreamOutput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { OutputStream } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link OutputStreamCommand}.
+ */
+export interface OutputStreamCommandInput {}
+/**
+ * @public
+ *
+ * The output of {@link OutputStreamCommand}.
+ */
+export interface OutputStreamCommandOutput extends OutputStreamOutput, __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, OutputStreamCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, OutputStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = {};
+ * const command = new OutputStreamCommand(input);
+ * const response = await client.send(command);
+ * // { // OutputStreamOutput
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param OutputStreamCommandInput - {@link OutputStreamCommandInput}
+ * @returns {@link OutputStreamCommandOutput}
+ * @see {@link OutputStreamCommandInput} for command's `input` shape.
+ * @see {@link OutputStreamCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link ServiceUnavailableError} (server fault)
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class OutputStreamCommand extends $Command
+  .classBuilder<
+    OutputStreamCommandInput,
+    OutputStreamCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions())];
+  })
+  .s("RestJson", "OutputStream", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "OutputStreamCommand")
+  .sc(OutputStream)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: {};
+      output: OutputStreamOutput;
+    };
+    sdk: {
+      input: OutputStreamCommandInput;
+      output: OutputStreamCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/OutputStreamWithInitialResponseCommand.ts b/private/aws-protocoltests-restjson-schema/src/commands/OutputStreamWithInitialResponseCommand.ts
new file mode 100644
index 0000000000000..0db1d13328e18
--- /dev/null
+++ b/private/aws-protocoltests-restjson-schema/src/commands/OutputStreamWithInitialResponseCommand.ts
@@ -0,0 +1,137 @@
+// smithy-typescript generated code
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { OutputStreamWithInitialResponseOutput } from "../models/models_0";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+import { OutputStreamWithInitialResponse } from "../schemas/schemas_0";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link OutputStreamWithInitialResponseCommand}.
+ */
+export interface OutputStreamWithInitialResponseCommandInput {}
+/**
+ * @public
+ *
+ * The output of {@link OutputStreamWithInitialResponseCommand}.
+ */
+export interface OutputStreamWithInitialResponseCommandOutput
+  extends OutputStreamWithInitialResponseOutput,
+    __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, OutputStreamWithInitialResponseCommand } from "@aws-sdk/aws-protocoltests-restjson-schema"; // ES Modules import
+ * // const { RestJsonProtocolClient, OutputStreamWithInitialResponseCommand } = require("@aws-sdk/aws-protocoltests-restjson-schema"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson-schema";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = {};
+ * const command = new OutputStreamWithInitialResponseCommand(input);
+ * const response = await client.send(command);
+ * // { // OutputStreamWithInitialResponseOutput
+ * //   initialResponseMember: "STRING_VALUE", // required
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param OutputStreamWithInitialResponseCommandInput - {@link OutputStreamWithInitialResponseCommandInput}
+ * @returns {@link OutputStreamWithInitialResponseCommandOutput}
+ * @see {@link OutputStreamWithInitialResponseCommandInput} for command's `input` shape.
+ * @see {@link OutputStreamWithInitialResponseCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class OutputStreamWithInitialResponseCommand extends $Command
+  .classBuilder<
+    OutputStreamWithInitialResponseCommandInput,
+    OutputStreamWithInitialResponseCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [getEndpointPlugin(config, Command.getEndpointParameterInstructions())];
+  })
+  .s("RestJson", "OutputStreamWithInitialResponse", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "OutputStreamWithInitialResponseCommand")
+  .sc(OutputStreamWithInitialResponse)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: {};
+      output: OutputStreamWithInitialResponseOutput;
+    };
+    sdk: {
+      input: OutputStreamWithInitialResponseCommandInput;
+      output: OutputStreamWithInitialResponseCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson-schema/src/commands/index.ts b/private/aws-protocoltests-restjson-schema/src/commands/index.ts
index f7eda19004821..de51781237b5e 100644
--- a/private/aws-protocoltests-restjson-schema/src/commands/index.ts
+++ b/private/aws-protocoltests-restjson-schema/src/commands/index.ts
@@ -7,6 +7,9 @@ export * from "./DatetimeOffsetsCommand";
 export * from "./DocumentTypeAsMapValueCommand";
 export * from "./DocumentTypeAsPayloadCommand";
 export * from "./DocumentTypeCommand";
+export * from "./DuplexStreamCommand";
+export * from "./DuplexStreamWithDistinctStreamsCommand";
+export * from "./DuplexStreamWithInitialMessagesCommand";
 export * from "./EmptyInputAndEmptyOutputCommand";
 export * from "./EndpointOperationCommand";
 export * from "./EndpointWithHostLabelOperationCommand";
@@ -22,6 +25,7 @@ export * from "./HttpPayloadWithStructureCommand";
 export * from "./HttpPayloadWithUnionCommand";
 export * from "./HttpPrefixHeadersCommand";
 export * from "./HttpPrefixHeadersInResponseCommand";
+export * from "./HttpQueryParamsOnlyOperationCommand";
 export * from "./HttpRequestWithFloatLabelsCommand";
 export * from "./HttpRequestWithGreedyLabelInPathCommand";
 export * from "./HttpRequestWithLabelsAndTimestampFormatCommand";
@@ -31,6 +35,8 @@ export * from "./HttpResponseCodeCommand";
 export * from "./HttpStringPayloadCommand";
 export * from "./IgnoreQueryParamsInResponseCommand";
 export * from "./InputAndOutputWithHeadersCommand";
+export * from "./InputStreamCommand";
+export * from "./InputStreamWithInitialRequestCommand";
 export * from "./JsonBlobsCommand";
 export * from "./JsonEnumsCommand";
 export * from "./JsonIntEnumsCommand";
@@ -80,6 +86,8 @@ export * from "./OmitsNullSerializesEmptyStringCommand";
 export * from "./OmitsSerializingEmptyListsCommand";
 export * from "./OperationWithDefaultsCommand";
 export * from "./OperationWithNestedStructureCommand";
+export * from "./OutputStreamCommand";
+export * from "./OutputStreamWithInitialResponseCommand";
 export * from "./PostPlayerActionCommand";
 export * from "./PostUnionWithJsonNameCommand";
 export * from "./PutWithContentEncodingCommand";
diff --git a/private/aws-protocoltests-restjson-schema/src/index.ts b/private/aws-protocoltests-restjson-schema/src/index.ts
index c9920e5b09f8c..378b1c6297a90 100644
--- a/private/aws-protocoltests-restjson-schema/src/index.ts
+++ b/private/aws-protocoltests-restjson-schema/src/index.ts
@@ -1,10 +1,5 @@
 // smithy-typescript generated code
 /* eslint-disable */
-/**
- * A REST JSON service that sends JSON requests and responses.
- *
- * @packageDocumentation
- */
 export * from "./RestJsonProtocolClient";
 export * from "./RestJsonProtocol";
 export { ClientInputEndpointParameters } from "./endpoint/EndpointParameters";
diff --git a/private/aws-protocoltests-restjson-schema/src/models/errors.ts b/private/aws-protocoltests-restjson-schema/src/models/errors.ts
index f6cbb02088ef0..bd41d2117bd95 100644
--- a/private/aws-protocoltests-restjson-schema/src/models/errors.ts
+++ b/private/aws-protocoltests-restjson-schema/src/models/errors.ts
@@ -30,6 +30,44 @@ export class ComplexError extends __BaseException {
   }
 }
 
+/**
+ * @public
+ */
+export class ErrorEvent extends __BaseException {
+  readonly name = "ErrorEvent" as const;
+  readonly $fault = "client" as const;
+  /**
+   * @internal
+   */
+  constructor(opts: __ExceptionOptionType<ErrorEvent, __BaseException>) {
+    super({
+      name: "ErrorEvent",
+      $fault: "client",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, ErrorEvent.prototype);
+  }
+}
+
+/**
+ * @public
+ */
+export class ServiceUnavailableError extends __BaseException {
+  readonly name = "ServiceUnavailableError" as const;
+  readonly $fault = "server" as const;
+  /**
+   * @internal
+   */
+  constructor(opts: __ExceptionOptionType<ServiceUnavailableError, __BaseException>) {
+    super({
+      name: "ServiceUnavailableError",
+      $fault: "server",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, ServiceUnavailableError.prototype);
+  }
+}
+
 /**
  * This error has test cases that test some of the dark corners of Amazon service
  * framework history. It should only be implemented by clients.
diff --git a/private/aws-protocoltests-restjson-schema/src/models/models_0.ts b/private/aws-protocoltests-restjson-schema/src/models/models_0.ts
index d7c1ca81cebda..bf0822ea96dfd 100644
--- a/private/aws-protocoltests-restjson-schema/src/models/models_0.ts
+++ b/private/aws-protocoltests-restjson-schema/src/models/models_0.ts
@@ -3,6 +3,7 @@ import { AutomaticJsonStringConversion as __AutomaticJsonStringConversion } from
 import { DocumentType as __DocumentType, StreamingBlobTypes } from "@smithy/types";
 
 import { FooEnum, IntegerEnum, StringEnum, TestEnum, TestIntEnum } from "./enums";
+import { ErrorEvent } from "./errors";
 
 /**
  * @public
@@ -38,6 +39,13 @@ export interface AllQueryStringTypesInput {
   queryParamsMapOfStringList?: Record<string, string[]> | undefined;
 }
 
+/**
+ * @public
+ */
+export interface BlobPayloadEvent {
+  payload?: Uint8Array | undefined;
+}
+
 /**
  * @public
  */
@@ -158,6 +166,325 @@ export interface DocumentTypeAsPayloadInputOutput {
   documentValue?: __DocumentType | undefined;
 }
 
+/**
+ * @public
+ */
+export interface HeadersEvent {
+  booleanHeader?: boolean | undefined;
+  byteHeader?: number | undefined;
+  shortHeader?: number | undefined;
+  intHeader?: number | undefined;
+  longHeader?: number | undefined;
+  blobHeader?: Uint8Array | undefined;
+  stringHeader?: string | undefined;
+  timestampHeader?: Date | undefined;
+}
+
+/**
+ * @public
+ */
+export interface PayloadStructure {
+  structureMember?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export interface HeadersAndExplicitPayloadEvent {
+  header?: string | undefined;
+  payload?: PayloadStructure | undefined;
+}
+
+/**
+ * @public
+ */
+export interface HeadersAndImplicitPayloadEvent {
+  header?: string | undefined;
+  payload?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export interface StringPayloadEvent {
+  payload?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export interface StructurePayloadEvent {
+  payload?: PayloadStructure | undefined;
+}
+
+/**
+ * @public
+ */
+export type PayloadUnion = PayloadUnion.UnionMemberMember | PayloadUnion.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace PayloadUnion {
+  export interface UnionMemberMember {
+    unionMember: string;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    unionMember?: never;
+    $unknown: [string, any];
+  }
+
+  /**
+   * @deprecated unused in schema-serde mode.
+   *
+   */
+  export interface Visitor<T> {
+    unionMember: (value: string) => T;
+    _: (name: string, value: any) => T;
+  }
+}
+
+/**
+ * @public
+ */
+export interface UnionPayloadEvent {
+  payload?: PayloadUnion | undefined;
+}
+
+/**
+ * @public
+ */
+export type EventStream =
+  | EventStream.BlobPayloadMember
+  | EventStream.ErrorMember
+  | EventStream.HeadersMember
+  | EventStream.HeadersAndExplicitPayloadMember
+  | EventStream.HeadersAndImplicitPayloadMember
+  | EventStream.StringPayloadMember
+  | EventStream.StructurePayloadMember
+  | EventStream.UnionPayloadMember
+  | EventStream.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace EventStream {
+  export interface HeadersMember {
+    headers: HeadersEvent;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface BlobPayloadMember {
+    headers?: never;
+    blobPayload: BlobPayloadEvent;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface StringPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload: StringPayloadEvent;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface StructurePayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload: StructurePayloadEvent;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface UnionPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload: UnionPayloadEvent;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface HeadersAndExplicitPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload: HeadersAndExplicitPayloadEvent;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface HeadersAndImplicitPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload: HeadersAndImplicitPayloadEvent;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface ErrorMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error: ErrorEvent;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown: [string, any];
+  }
+
+  /**
+   * @deprecated unused in schema-serde mode.
+   *
+   */
+  export interface Visitor<T> {
+    headers: (value: HeadersEvent) => T;
+    blobPayload: (value: BlobPayloadEvent) => T;
+    stringPayload: (value: StringPayloadEvent) => T;
+    structurePayload: (value: StructurePayloadEvent) => T;
+    unionPayload: (value: UnionPayloadEvent) => T;
+    headersAndExplicitPayload: (value: HeadersAndExplicitPayloadEvent) => T;
+    headersAndImplicitPayload: (value: HeadersAndImplicitPayloadEvent) => T;
+    error: (value: ErrorEvent) => T;
+    _: (name: string, value: any) => T;
+  }
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamOutput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithDistinctStreamsInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @public
+ */
+export interface SingletonEvent {
+  value?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export type SingletonEventStream = SingletonEventStream.SingletonMember | SingletonEventStream.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace SingletonEventStream {
+  export interface SingletonMember {
+    singleton: SingletonEvent;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    singleton?: never;
+    $unknown: [string, any];
+  }
+
+  /**
+   * @deprecated unused in schema-serde mode.
+   *
+   */
+  export interface Visitor<T> {
+    singleton: (value: SingletonEvent) => T;
+    _: (name: string, value: any) => T;
+  }
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithDistinctStreamsOutput {
+  stream?: SingletonEventStream | undefined;
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithInitialMessagesInput {
+  initialRequestMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithInitialMessagesOutput {
+  initialResponseMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
 /**
  * @public
  */
@@ -317,6 +644,13 @@ export interface HttpPrefixHeadersInResponseOutput {
   prefixHeaders?: Record<string, string> | undefined;
 }
 
+/**
+ * @public
+ */
+export interface HttpQueryParamsOnlyInput {
+  queryMap?: Record<string, string> | undefined;
+}
+
 /**
  * @public
  */
@@ -421,6 +755,21 @@ export interface InputAndOutputWithHeadersIO {
   headerIntegerEnumList?: IntegerEnum[] | undefined;
 }
 
+/**
+ * @public
+ */
+export interface InputStreamInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @public
+ */
+export interface InputStreamWithInitialRequestInput {
+  initialRequestMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
 /**
  * @public
  */
@@ -1111,6 +1460,21 @@ export interface OperationWithNestedStructureOutput {
   dialogMap?: Record<string, Dialog> | undefined;
 }
 
+/**
+ * @public
+ */
+export interface OutputStreamOutput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @public
+ */
+export interface OutputStreamWithInitialResponseOutput {
+  initialResponseMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
 /**
  * @public
  */
diff --git a/private/aws-protocoltests-restjson-schema/src/runtimeConfig.browser.ts b/private/aws-protocoltests-restjson-schema/src/runtimeConfig.browser.ts
index 397966de10cf6..2b16c22f9d875 100644
--- a/private/aws-protocoltests-restjson-schema/src/runtimeConfig.browser.ts
+++ b/private/aws-protocoltests-restjson-schema/src/runtimeConfig.browser.ts
@@ -5,9 +5,10 @@ import packageInfo from "../package.json"; // eslint-disable-line
 import { Sha256 } from "@aws-crypto/sha256-browser";
 import { createDefaultUserAgentProvider } from "@aws-sdk/util-user-agent-browser";
 import { DEFAULT_USE_DUALSTACK_ENDPOINT, DEFAULT_USE_FIPS_ENDPOINT } from "@smithy/config-resolver";
+import { eventStreamSerdeProvider } from "@smithy/eventstream-serde-browser";
 import { FetchHttpHandler as RequestHandler, streamCollector } from "@smithy/fetch-http-handler";
 import { blobHasher as streamHasher } from "@smithy/hash-blob-browser";
-import { invalidProvider } from "@smithy/invalid-dependency";
+import { invalidFunction, invalidProvider } from "@smithy/invalid-dependency";
 import { Md5 } from "@smithy/md5-js";
 import {
   DEFAULT_DISABLE_REQUEST_COMPRESSION,
@@ -39,6 +40,10 @@ export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
       config?.defaultUserAgentProvider ??
       createDefaultUserAgentProvider({ serviceId: clientSharedValues.serviceId, clientVersion: packageInfo.version }),
     disableRequestCompression: config?.disableRequestCompression ?? DEFAULT_DISABLE_REQUEST_COMPRESSION,
+    eventStreamPayloadHandlerProvider:
+      config?.eventStreamPayloadHandlerProvider ??
+      (() => ({ handle: invalidFunction("event stream request is not supported in browser.") })),
+    eventStreamSerdeProvider: config?.eventStreamSerdeProvider ?? eventStreamSerdeProvider,
     maxAttempts: config?.maxAttempts ?? DEFAULT_MAX_ATTEMPTS,
     md5: config?.md5 ?? Md5,
     region: config?.region ?? invalidProvider("Region is missing"),
diff --git a/private/aws-protocoltests-restjson-schema/src/runtimeConfig.native.ts b/private/aws-protocoltests-restjson-schema/src/runtimeConfig.native.ts
index 48bc89d417bd9..413dc1c065160 100644
--- a/private/aws-protocoltests-restjson-schema/src/runtimeConfig.native.ts
+++ b/private/aws-protocoltests-restjson-schema/src/runtimeConfig.native.ts
@@ -1,5 +1,6 @@
 // smithy-typescript generated code
 import { Sha256 } from "@aws-crypto/sha256-js";
+import { invalidFunction } from "@smithy/invalid-dependency";
 
 import { RestJsonProtocolClientConfig } from "./RestJsonProtocolClient";
 import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.browser";
@@ -13,6 +14,9 @@ export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
     ...browserDefaults,
     ...config,
     runtime: "react-native",
+    eventStreamPayloadHandlerProvider:
+      config?.eventStreamPayloadHandlerProvider ??
+      (() => ({ handle: invalidFunction("event stream request is not supported in ReactNative.") })),
     sha256: config?.sha256 ?? Sha256,
   };
 };
diff --git a/private/aws-protocoltests-restjson-schema/src/runtimeConfig.ts b/private/aws-protocoltests-restjson-schema/src/runtimeConfig.ts
index f5f4b2fb3ca27..bdc0958ab8a38 100644
--- a/private/aws-protocoltests-restjson-schema/src/runtimeConfig.ts
+++ b/private/aws-protocoltests-restjson-schema/src/runtimeConfig.ts
@@ -4,6 +4,7 @@ import packageInfo from "../package.json"; // eslint-disable-line
 
 import { NODE_AUTH_SCHEME_PREFERENCE_OPTIONS, emitWarningIfUnsupportedVersion as awsCheckVersion } from "@aws-sdk/core";
 import { defaultProvider as credentialDefaultProvider } from "@aws-sdk/credential-provider-node";
+import { eventStreamPayloadHandlerProvider } from "@aws-sdk/eventstream-handler-node";
 import { NODE_APP_ID_CONFIG_OPTIONS, createDefaultUserAgentProvider } from "@aws-sdk/util-user-agent-node";
 import {
   NODE_REGION_CONFIG_FILE_OPTIONS,
@@ -11,6 +12,7 @@ import {
   NODE_USE_DUALSTACK_ENDPOINT_CONFIG_OPTIONS,
   NODE_USE_FIPS_ENDPOINT_CONFIG_OPTIONS,
 } from "@smithy/config-resolver";
+import { eventStreamSerdeProvider } from "@smithy/eventstream-serde-node";
 import { Hash } from "@smithy/hash-node";
 import { fileStreamHasher as streamHasher } from "@smithy/hash-stream-node";
 import {
@@ -55,6 +57,8 @@ export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
       createDefaultUserAgentProvider({ serviceId: clientSharedValues.serviceId, clientVersion: packageInfo.version }),
     disableRequestCompression:
       config?.disableRequestCompression ?? loadNodeConfig(NODE_DISABLE_REQUEST_COMPRESSION_CONFIG_OPTIONS, config),
+    eventStreamPayloadHandlerProvider: config?.eventStreamPayloadHandlerProvider ?? eventStreamPayloadHandlerProvider,
+    eventStreamSerdeProvider: config?.eventStreamSerdeProvider ?? eventStreamSerdeProvider,
     maxAttempts: config?.maxAttempts ?? loadNodeConfig(NODE_MAX_ATTEMPT_CONFIG_OPTIONS, config),
     md5: config?.md5 ?? Hash.bind(null, "md5"),
     region:
diff --git a/private/aws-protocoltests-restjson-schema/src/schemas/schemas_0.ts b/private/aws-protocoltests-restjson-schema/src/schemas/schemas_0.ts
index b3e64dd02d119..e3e75158e7f11 100644
--- a/private/aws-protocoltests-restjson-schema/src/schemas/schemas_0.ts
+++ b/private/aws-protocoltests-restjson-schema/src/schemas/schemas_0.ts
@@ -3,6 +3,7 @@ const _AQST = "AllQueryStringTypes";
 const _AQSTI = "AllQueryStringTypesInput";
 const _B = "Byte";
 const _BL = "BooleanList";
+const _BPE = "BlobPayloadEvent";
 const _Bo = "Boolean";
 const _CAVQS = "ConstantAndVariableQueryString";
 const _CAVQSI = "ConstantAndVariableQueryStringInput";
@@ -23,8 +24,17 @@ const _DLi = "DialogList";
 const _DM = "DialogMap";
 const _DO = "DatetimeOffsets";
 const _DOO = "DatetimeOffsetsOutput";
+const _DS = "DuplexStream";
+const _DSI = "DuplexStreamInput";
 const _DSM = "DenseSetMap";
 const _DSMe = "DenseStructMap";
+const _DSO = "DuplexStreamOutput";
+const _DSWDS = "DuplexStreamWithDistinctStreams";
+const _DSWDSI = "DuplexStreamWithDistinctStreamsInput";
+const _DSWDSO = "DuplexStreamWithDistinctStreamsOutput";
+const _DSWIM = "DuplexStreamWithInitialMessages";
+const _DSWIMI = "DuplexStreamWithInitialMessagesInput";
+const _DSWIMO = "DuplexStreamWithInitialMessagesOutput";
 const _DT = "DocumentType";
 const _DTAMV = "DocumentTypeAsMapValue";
 const _DTAMVIO = "DocumentTypeAsMapValueInputOutput";
@@ -34,12 +44,14 @@ const _DTIO = "DocumentTypeInputOutput";
 const _De = "Defaults";
 const _Di = "Dialog";
 const _E = "Enum";
+const _EE = "ErrorEvent";
 const _EIAEO = "EmptyInputAndEmptyOutput";
 const _EIAEOI = "EmptyInputAndEmptyOutputInput";
 const _EIAEOO = "EmptyInputAndEmptyOutputOutput";
 const _EL = "EnumList";
 const _EO = "EndpointOperation";
 const _EPI = "EnumPayloadInput";
+const _ES = "EventStream";
 const _EWHLO = "EndpointWithHostLabelOperation";
 const _Em = "Empty";
 const _F = "Float";
@@ -55,8 +67,11 @@ const _GS = "GreetingStruct";
 const _GWE = "GreetingWithErrors";
 const _GWEO = "GreetingWithErrorsOutput";
 const _H = "Header";
+const _HAEPE = "HeadersAndExplicitPayloadEvent";
+const _HAIPE = "HeadersAndImplicitPayloadEvent";
 const _HCR = "HttpChecksumRequired";
 const _HCRIO = "HttpChecksumRequiredInputOutput";
+const _HE = "HeadersEvent";
 const _HEP = "HttpEnumPayload";
 const _HEPH = "HttpEmptyPrefixHeaders";
 const _HEPHI = "HttpEmptyPrefixHeadersInput";
@@ -76,6 +91,8 @@ const _HPWS = "HttpPayloadWithStructure";
 const _HPWSIO = "HttpPayloadWithStructureInputOutput";
 const _HPWU = "HttpPayloadWithUnion";
 const _HPWUIO = "HttpPayloadWithUnionInputOutput";
+const _HQPOI = "HttpQueryParamsOnlyInput";
+const _HQPOO = "HttpQueryParamsOnlyOperation";
 const _HRC = "HttpResponseCode";
 const _HRCO = "HttpResponseCodeOutput";
 const _HRWFL = "HttpRequestWithFloatLabels";
@@ -100,6 +117,10 @@ const _IL = "IntegerList";
 const _IQPIR = "IgnoreQueryParamsInResponse";
 const _IQPIRO = "IgnoreQueryParamsInResponseOutput";
 const _IS = "IntegerSet";
+const _ISI = "InputStreamInput";
+const _ISWIR = "InputStreamWithInitialRequest";
+const _ISWIRI = "InputStreamWithInitialRequestInput";
+const _ISn = "InputStream";
 const _JB = "JpegBlob";
 const _JBIO = "JsonBlobsInputOutput";
 const _JBs = "JsonBlobs";
@@ -197,8 +218,12 @@ const _NSL = "NestedStringList";
 const _Nu = "Null";
 const _ONSES = "OmitsNullSerializesEmptyString";
 const _ONSESI = "OmitsNullSerializesEmptyStringInput";
+const _OS = "OutputStream";
 const _OSEL = "OmitsSerializingEmptyLists";
 const _OSELI = "OmitsSerializingEmptyListsInput";
+const _OSO = "OutputStreamOutput";
+const _OSWIR = "OutputStreamWithInitialResponse";
+const _OSWIRO = "OutputStreamWithInitialResponseOutput";
 const _OWD = "OperationWithDefaults";
 const _OWDI = "OperationWithDefaultsInput";
 const _OWDO = "OperationWithDefaultsOutput";
@@ -210,6 +235,8 @@ const _PC = "PayloadConfig";
 const _PPA = "PostPlayerAction";
 const _PPAI = "PostPlayerActionInput";
 const _PPAO = "PostPlayerActionOutput";
+const _PS = "PayloadStructure";
+const _PU = "PayloadUnion";
 const _PUWJN = "PostUnionWithJsonName";
 const _PUWJNI = "PostUnionWithJsonNameInput";
 const _PUWJNO = "PostUnionWithJsonNameOutput";
@@ -232,6 +259,8 @@ const _RSIONe = "RecursiveShapesInputOutputNested2";
 const _S = "String";
 const _SB = "StreamingBlob";
 const _SBM = "SparseBooleanMap";
+const _SE = "SingletonEvent";
+const _SES = "SingletonEventStream";
 const _SJL = "SparseJsonLists";
 const _SJLIO = "SparseJsonListsInputOutput";
 const _SJM = "SparseJsonMaps";
@@ -241,6 +270,8 @@ const _SLM = "StringListMap";
 const _SLMt = "StructureListMember";
 const _SLt = "StructureList";
 const _SNM = "SparseNumberMap";
+const _SPE = "StringPayloadEvent";
+const _SPEt = "StructurePayloadEvent";
 const _SPI = "StringPayloadInput";
 const _SS = "StringSet";
 const _SSL = "SparseShortList";
@@ -258,6 +289,7 @@ const _STRLI = "StreamingTraitsRequireLengthInput";
 const _STWMT = "StreamingTraitsWithMediaType";
 const _STWMTIO = "StreamingTraitsWithMediaTypeInputOutput";
 const _SU = "SimpleUnion";
+const _SUE = "ServiceUnavailableError";
 const _Sh = "Short";
 const _St = "Status";
 const _T = "Timestamp";
@@ -281,6 +313,7 @@ const _TPSIO = "TestPayloadStructureInputOutput";
 const _UIAO = "UnitInputAndOutput";
 const _UIO = "UnionInputOutput";
 const _UP = "UnionPayload";
+const _UPE = "UnionPayloadEvent";
 const _UWJN = "UnionWithJsonName";
 const _XA = "X-A";
 const _XATI = "X-Amz-Test-Id";
@@ -320,6 +353,9 @@ const _a_ = "a";
 const _ac = "action";
 const _amth = "amz-media-typed-header";
 const _b = "baz";
+const _bH = "booleanHeader";
+const _bHl = "blobHeader";
+const _bHy = "byteHeader";
 const _bIB = "booleanInBody";
 const _bIBy = "byteInBody";
 const _bIH = "booleanInHeader";
@@ -331,6 +367,7 @@ const _bIQy = "byteInQuery";
 const _bL = "booleanList";
 const _bLo = "bodyList";
 const _bM = "bodyMap";
+const _bP = "blobPayload";
 const _bV = "byteValue";
 const _bVl = "blobValue";
 const _bVo = "booleanValue";
@@ -388,7 +425,9 @@ const _di = "dialog";
 const _do = "double";
 const _e = "error";
 const _eB = "emptyBlob";
+const _eH = "eventHeader";
 const _eL = "enumList";
+const _eP = "eventPayload";
 const _eS = "emptyString";
 const _eSOT = "epochSecondsOnTarget";
 const _eSp = "epochSeconds";
@@ -414,6 +453,8 @@ const _fl = "float";
 const _fo = "foo";
 const _g = "greeting";
 const _h = "hello";
+const _hAEP = "headersAndExplicitPayload";
+const _hAIP = "headersAndImplicitPayload";
 const _hB = "headerByte";
 const _hBL = "headerBooleanList";
 const _hCR = "httpChecksumRequired";
@@ -441,6 +482,7 @@ const _hSe = "headerShort";
 const _hTB = "headerTrueBool";
 const _hTL = "headerTimestampList";
 const _he = "header";
+const _hea = "headers";
 const _hi = "hi";
 const _ht = "http";
 const _i = "image/jpeg";
@@ -451,18 +493,24 @@ const _iEM = "integerEnumMap";
 const _iES = "integerEnumSet";
 const _iEn = "integerEnum2";
 const _iEnt = "integerEnum3";
+const _iH = "intHeader";
 const _iIB = "integerInBody";
 const _iIH = "integerInHeader";
 const _iIP = "integerInPath";
 const _iIQ = "integerInQuery";
 const _iL = "integerList";
+const _iRM = "initialRequestMember";
+const _iRMn = "initialResponseMember";
 const _iT = "idempotencyToken";
 const _iV = "integerValue";
 const _in = "integer";
 const _int = "int";
+const _irm = "initial-request-member";
+const _irm_ = "initial-response-member";
 const _j = "json";
 const _jN = "jsonName";
 const _l = "language";
+const _lH = "longHeader";
 const _lIB = "longInBody";
 const _lIH = "longInHeader";
 const _lIP = "longInPath";
@@ -479,6 +527,7 @@ const _mS = "maybeSet";
 const _mSL = "myStructureList";
 const _mT = "mediaType";
 const _mV = "mapValue";
+const _me = "message";
 const _n = "nested";
 const _nSL = "nestedStringList";
 const _nV = "nullValue";
@@ -506,6 +555,7 @@ const _qIEL = "queryIntegerEnumList";
 const _qIL = "queryIntegerList";
 const _qIS = "queryIntegerSet";
 const _qL = "queryLong";
+const _qM = "queryMap";
 const _qPMOSL = "queryParamsMapOfStringList";
 const _qS = "queryString";
 const _qSL = "queryStringList";
@@ -520,14 +570,19 @@ const _rM = "recursiveMember";
 const _rSV = "renamedStructureValue";
 const _s = "streaming";
 const _sBM = "sparseBooleanMap";
-const _sH = "specificHeader";
+const _sH = "shortHeader";
+const _sHp = "specificHeader";
+const _sHt = "stringHeader";
 const _sIB = "shortInBody";
 const _sIH = "shortInHeader";
 const _sIP = "shortInPath";
 const _sIQ = "shortInQuery";
 const _sL = "stringList";
 const _sLt = "structureList";
+const _sM = "structureMember";
 const _sNM = "sparseNumberMap";
+const _sP = "stringPayload";
+const _sPt = "structurePayload";
 const _sS = "stringSet";
 const _sSL = "sparseStringList";
 const _sSLp = "sparseShortList";
@@ -540,15 +595,18 @@ const _sVt = "structureValue";
 const _sa = "salutation";
 const _se = "server";
 const _sh = "short";
+const _si = "singleton";
 const _sm = "smithy.ts.sdk.synthetic.aws.protocoltests.restjson";
 const _sp = "sparse";
-const _st = "string";
-const _str = "str";
+const _st = "stream";
+const _str = "string";
+const _str_ = "str";
 const _t = "text/plain";
 const _tBV = "trueBooleanValue";
 const _tC = "testConfig";
 const _tDT = "targetDateTime";
 const _tES = "targetEpochSeconds";
+const _tH = "timestampHeader";
 const _tHD = "targetHttpDate";
 const _tI = "testId";
 const _tL = "timestampList";
@@ -559,6 +617,8 @@ const _ti = "timestamp";
 const _tim = "timeout";
 const _to = "token";
 const _u = "union";
+const _uM = "unionMember";
+const _uP = "unionPayload";
 const _v = "value";
 const _xati = "x-amz-test-id";
 const _xf = "x-foo";
@@ -586,8 +646,10 @@ import {
 
 import {
   ComplexError as __ComplexError,
+  ErrorEvent as __ErrorEvent,
   FooError as __FooError,
   InvalidGreeting as __InvalidGreeting,
+  ServiceUnavailableError as __ServiceUnavailableError,
 } from "../models/errors";
 import { RestJsonProtocolServiceException as __RestJsonProtocolServiceException } from "../models/RestJsonProtocolServiceException";
 
@@ -810,6 +872,21 @@ export var AllQueryStringTypesInput: StaticStructureSchema = [
     [[2, n1, _SLM, 0, 0, 64 | 0], 64],
   ],
 ];
+export var BlobPayloadEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _BPE,
+  0,
+  [_p],
+  [
+    [
+      21,
+      {
+        [_eP]: 1,
+      },
+    ],
+  ],
+];
 export var ClientOptionalDefaults: StaticStructureSchema = [3, n0, _COD, 0, [_m], [1]];
 export var ComplexError: StaticErrorSchema = [
   -3,
@@ -914,9 +991,71 @@ export var Dialog: StaticStructureSchema = [3, n0, _Di, 0, [_l, _g, _f], [0, 0,
 export var DocumentTypeAsMapValueInputOutput: StaticStructureSchema = [3, n0, _DTAMVIO, 0, [_dVM], [128 | 15]];
 export var DocumentTypeAsPayloadInputOutput: StaticStructureSchema = [3, n0, _DTAPIO, 0, [_dV], [[15, 16]]];
 export var DocumentTypeInputOutput: StaticStructureSchema = [3, n0, _DTIO, 0, [_sV, _dV], [0, 15]];
+export var DuplexStreamInput: StaticStructureSchema = [3, n0, _DSI, 0, [_st], [[() => EventStream, 16]]];
+export var DuplexStreamOutput: StaticStructureSchema = [3, n0, _DSO, 0, [_st], [[() => EventStream, 16]]];
+export var DuplexStreamWithDistinctStreamsInput: StaticStructureSchema = [
+  3,
+  n0,
+  _DSWDSI,
+  0,
+  [_st],
+  [[() => EventStream, 16]],
+];
+export var DuplexStreamWithDistinctStreamsOutput: StaticStructureSchema = [
+  3,
+  n0,
+  _DSWDSO,
+  0,
+  [_st],
+  [[() => SingletonEventStream, 16]],
+];
+export var DuplexStreamWithInitialMessagesInput: StaticStructureSchema = [
+  3,
+  n0,
+  _DSWIMI,
+  0,
+  [_iRM, _st],
+  [
+    [
+      0,
+      {
+        [_hH]: _irm,
+      },
+    ],
+    [() => EventStream, 16],
+  ],
+];
+export var DuplexStreamWithInitialMessagesOutput: StaticStructureSchema = [
+  3,
+  n0,
+  _DSWIMO,
+  0,
+  [_iRMn, _st],
+  [
+    [
+      0,
+      {
+        [_hH]: _irm_,
+      },
+    ],
+    [() => EventStream, 16],
+  ],
+];
 export var EmptyInputAndEmptyOutputInput: StaticStructureSchema = [3, n0, _EIAEOI, 0, [], []];
 export var EmptyInputAndEmptyOutputOutput: StaticStructureSchema = [3, n0, _EIAEOO, 0, [], []];
 export var EnumPayloadInput: StaticStructureSchema = [3, n0, _EPI, 0, [_p], [[0, 16]]];
+export var ErrorEvent: StaticErrorSchema = [
+  -3,
+  n0,
+  _EE,
+  {
+    [_e]: _c,
+  },
+  [_me],
+  [0],
+];
+TypeRegistry.for(n0).registerError(ErrorEvent, __ErrorEvent);
+
 export var Farewell: StaticStructureSchema = [3, n0, _Fa, 0, [_ph], [0]];
 export var FooError: StaticErrorSchema = [
   -3,
@@ -947,6 +1086,100 @@ export var GreetingWithErrorsOutput: StaticStructureSchema = [
     ],
   ],
 ];
+export var HeadersAndExplicitPayloadEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _HAEPE,
+  0,
+  [_he, _p],
+  [
+    [
+      0,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      () => PayloadStructure,
+      {
+        [_eP]: 1,
+      },
+    ],
+  ],
+];
+export var HeadersAndImplicitPayloadEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _HAIPE,
+  0,
+  [_he, _p],
+  [
+    [
+      0,
+      {
+        [_eH]: 1,
+      },
+    ],
+    0,
+  ],
+];
+export var HeadersEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _HE,
+  0,
+  [_bH, _bHy, _sH, _iH, _lH, _bHl, _sHt, _tH],
+  [
+    [
+      2,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      1,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      1,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      1,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      1,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      21,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      0,
+      {
+        [_eH]: 1,
+      },
+    ],
+    [
+      5,
+      {
+        [_eH]: 1,
+      },
+    ],
+  ],
+];
 export var HostLabelInput: StaticStructureSchema = [
   3,
   n0,
@@ -968,7 +1201,7 @@ export var HttpEmptyPrefixHeadersInput: StaticStructureSchema = [
   n0,
   _HEPHI,
   0,
-  [_pH, _sH],
+  [_pH, _sHp],
   [
     [
       128 | 0,
@@ -989,7 +1222,7 @@ export var HttpEmptyPrefixHeadersOutput: StaticStructureSchema = [
   n0,
   _HEPHO,
   0,
-  [_pH, _sH],
+  [_pH, _sHp],
   [
     [
       128 | 0,
@@ -1111,6 +1344,7 @@ export var HttpPrefixHeadersOutput: StaticStructureSchema = [
     ],
   ],
 ];
+export var HttpQueryParamsOnlyInput: StaticStructureSchema = [3, n0, _HQPOI, 0, [_qM], [[128 | 0, 64]]];
 export var HttpRequestWithFloatLabelsInput: StaticStructureSchema = [
   3,
   n0,
@@ -1154,7 +1388,7 @@ export var HttpRequestWithLabelsInput: StaticStructureSchema = [
   n0,
   _HRWLI,
   0,
-  [_st, _sh, _in, _lo, _fl, _do, _bo, _ti],
+  [_str, _sh, _in, _lo, _fl, _do, _bo, _ti],
   [
     [0, 1],
     [1, 1],
@@ -1166,7 +1400,7 @@ export var HttpRequestWithLabelsInput: StaticStructureSchema = [
     [4, 1],
   ],
 ];
-export var HttpRequestWithRegexLiteralInput: StaticStructureSchema = [3, n0, _HRWRLI, 0, [_str], [[0, 1]]];
+export var HttpRequestWithRegexLiteralInput: StaticStructureSchema = [3, n0, _HRWRLI, 0, [_str_], [[0, 1]]];
 export var HttpResponseCodeOutput: StaticStructureSchema = [3, n0, _HRCO, 0, [_St], [[1, 32]]];
 export var IgnoreQueryParamsInResponseOutput: StaticStructureSchema = [
   3,
@@ -1300,6 +1534,23 @@ export var InputAndOutputWithHeadersIO: StaticStructureSchema = [
     ],
   ],
 ];
+export var InputStreamInput: StaticStructureSchema = [3, n0, _ISI, 0, [_st], [[() => EventStream, 16]]];
+export var InputStreamWithInitialRequestInput: StaticStructureSchema = [
+  3,
+  n0,
+  _ISWIRI,
+  0,
+  [_iRM, _st],
+  [
+    [
+      0,
+      {
+        [_hH]: _irm,
+      },
+    ],
+    [() => EventStream, 16],
+  ],
+];
 export var InvalidGreeting: StaticErrorSchema = [
   -3,
   n0,
@@ -1857,7 +2108,25 @@ export var OperationWithNestedStructureOutput: StaticStructureSchema = [
   [_di, _dLi, _dMi],
   [() => Dialog, () => DialogList, () => DialogMap],
 ];
+export var OutputStreamOutput: StaticStructureSchema = [3, n0, _OSO, 0, [_st], [[() => EventStream, 16]]];
+export var OutputStreamWithInitialResponseOutput: StaticStructureSchema = [
+  3,
+  n0,
+  _OSWIRO,
+  0,
+  [_iRMn, _st],
+  [
+    [
+      0,
+      {
+        [_hH]: _irm_,
+      },
+    ],
+    [() => EventStream, 16],
+  ],
+];
 export var PayloadConfig: StaticStructureSchema = [3, n0, _PC, 0, [_da], [1]];
+export var PayloadStructure: StaticStructureSchema = [3, n0, _PS, 0, [_sM], [0]];
 export var PostPlayerActionInput: StaticStructureSchema = [3, n0, _PPAI, 0, [_ac], [() => PlayerAction]];
 export var PostPlayerActionOutput: StaticStructureSchema = [3, n0, _PPAO, 0, [_ac], [() => PlayerAction]];
 export var PostUnionWithJsonNameInput: StaticStructureSchema = [
@@ -1966,6 +2235,19 @@ export var RecursiveShapesInputOutputNested2: StaticStructureSchema = [
 ];
 export var ResponseCodeHttpFallbackInputOutput: StaticStructureSchema = [3, n0, _RCHFIO, 0, [], []];
 export var ResponseCodeRequiredOutput: StaticStructureSchema = [3, n0, _RCRO, 0, [_rC], [[1, 32]]];
+export var ServiceUnavailableError: StaticErrorSchema = [
+  -3,
+  n0,
+  _SUE,
+  {
+    [_e]: _se,
+    [_hE]: 500,
+  },
+  [_me],
+  [0],
+];
+TypeRegistry.for(n0).registerError(ServiceUnavailableError, __ServiceUnavailableError);
+
 export var SimpleScalarPropertiesInputOutput: StaticStructureSchema = [
   3,
   n0,
@@ -1995,6 +2277,7 @@ export var SimpleScalarPropertiesInputOutput: StaticStructureSchema = [
     ],
   ],
 ];
+export var SingletonEvent: StaticStructureSchema = [3, n0, _SE, 0, [_v], [0]];
 export var SparseJsonListsInputOutput: StaticStructureSchema = [
   3,
   n0,
@@ -2068,6 +2351,21 @@ export var StreamingTraitsWithMediaTypeInputOutput: StaticStructureSchema = [
     [() => StreamingTextPlainBlob, 16],
   ],
 ];
+export var StringPayloadEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _SPE,
+  0,
+  [_p],
+  [
+    [
+      0,
+      {
+        [_eP]: 1,
+      },
+    ],
+  ],
+];
 export var StringPayloadInput: StaticStructureSchema = [3, n0, _SPI, 0, [_p], [[0, 16]]];
 export var StructureListMember: StaticStructureSchema = [
   3,
@@ -2090,6 +2388,21 @@ export var StructureListMember: StaticStructureSchema = [
     ],
   ],
 ];
+export var StructurePayloadEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _SPEt,
+  0,
+  [_p],
+  [
+    [
+      () => PayloadStructure,
+      {
+        [_eP]: 1,
+      },
+    ],
+  ],
+];
 export var TestBodyStructureInputOutput: StaticStructureSchema = [
   3,
   n0,
@@ -2214,8 +2527,23 @@ export var TopLevel: StaticStructureSchema = [
   [() => Dialog, () => DialogList, () => DialogMap],
 ];
 export var UnionInputOutput: StaticStructureSchema = [3, n0, _UIO, 0, [_con], [() => MyUnion]];
-export var GreetingStruct: StaticStructureSchema = [3, n2, _GS, 0, [_sa], [0]];
-export var GreetingStruct_n1: StaticStructureSchema = [3, n1, _GS, 0, [_hi], [0]];
+export var UnionPayloadEvent: StaticStructureSchema = [
+  3,
+  n0,
+  _UPE,
+  0,
+  [_p],
+  [
+    [
+      () => PayloadUnion,
+      {
+        [_eP]: 1,
+      },
+    ],
+  ],
+];
+export var GreetingStruct_n2: StaticStructureSchema = [3, n2, _GS, 0, [_sa], [0]];
+export var GreetingStruct: StaticStructureSchema = [3, n1, _GS, 0, [_hi], [0]];
 export var __Unit = "unit" as const;
 
 export var RestJsonProtocolServiceException: StaticErrorSchema = [
@@ -2282,10 +2610,12 @@ export var DenseNumberMap = 128 | 1;
 export var DenseSetMap: StaticMapSchema = [2, n0, _DSM, 0, 0, 64 | 0];
 export var DenseStringMap = 128 | 0;
 
-export var DenseStructMap: StaticMapSchema = [2, n0, _DSMe, 0, 0, () => GreetingStruct_n1];
+export var DenseStructMap: StaticMapSchema = [2, n0, _DSMe, 0, 0, () => GreetingStruct];
 export var DialogMap: StaticMapSchema = [2, n0, _DM, 0, 0, () => Dialog];
 export var DocumentValuedMap = 128 | 15;
 
+export var QueryMap = 128 | 0;
+
 export var SimpleMap = 128 | 0;
 
 export var SparseBooleanMap: StaticMapSchema = [
@@ -2326,7 +2656,7 @@ export var SparseStructMap: StaticMapSchema = [
     [_sp]: 1,
   },
   0,
-  () => GreetingStruct_n1,
+  () => GreetingStruct,
 ];
 export var TestStringMap = 128 | 0;
 
@@ -2347,16 +2677,37 @@ export var SparseStringMap: StaticMapSchema = [
 export var StringListMap: StaticMapSchema = [2, n1, _SLM, 0, 0, 64 | 0];
 export var StringMap = 128 | 0;
 
+export var EventStream: StaticStructureSchema = [
+  3,
+  n0,
+  _ES,
+  {
+    [_s]: 1,
+  },
+  [_hea, _bP, _sP, _sPt, _uP, _hAEP, _hAIP, _e],
+  [
+    [() => HeadersEvent, 0],
+    [() => BlobPayloadEvent, 0],
+    [() => StringPayloadEvent, 0],
+    [() => StructurePayloadEvent, 0],
+    [() => UnionPayloadEvent, 0],
+    [() => HeadersAndExplicitPayloadEvent, 0],
+    [() => HeadersAndImplicitPayloadEvent, 0],
+    [() => ErrorEvent, 0],
+  ],
+];
 export var MyUnion: StaticStructureSchema = [
   3,
   n0,
   _MU,
   0,
   [_sV, _bVo, _nVu, _bVl, _tV, _eV, _lVi, _mV, _sVt, _rSV],
-  [0, 2, 1, 21, 4, 0, 64 | 0, 128 | 0, () => GreetingStruct_n1, () => GreetingStruct],
+  [0, 2, 1, 21, 4, 0, 64 | 0, 128 | 0, () => GreetingStruct, () => GreetingStruct_n2],
 ];
+export var PayloadUnion: StaticStructureSchema = [3, n0, _PU, 0, [_uM], [0]];
 export var PlayerAction: StaticStructureSchema = [3, n0, _PA, 0, [_qu], [() => __Unit]];
-export var SimpleUnion: StaticStructureSchema = [3, n0, _SU, 0, [_int, _st], [1, 0]];
+export var SimpleUnion: StaticStructureSchema = [3, n0, _SU, 0, [_int, _str], [1, 0]];
+export var SingletonEventStream: StaticStructureSchema = [3, n0, _SES, 0, [_si], [() => SingletonEvent]];
 export var UnionPayload: StaticStructureSchema = [3, n0, _UP, 0, [_g], [0]];
 export var UnionWithJsonName: StaticStructureSchema = [
   3,
@@ -2460,6 +2811,36 @@ export var DocumentTypeAsPayload: StaticOperationSchema = [
   () => DocumentTypeAsPayloadInputOutput,
   () => DocumentTypeAsPayloadInputOutput,
 ];
+export var DuplexStream: StaticOperationSchema = [
+  9,
+  n0,
+  _DS,
+  {
+    [_ht]: ["POST", "/DuplexStream", 200],
+  },
+  () => DuplexStreamInput,
+  () => DuplexStreamOutput,
+];
+export var DuplexStreamWithDistinctStreams: StaticOperationSchema = [
+  9,
+  n0,
+  _DSWDS,
+  {
+    [_ht]: ["POST", "/DuplexStreamWithDistinctStreams", 200],
+  },
+  () => DuplexStreamWithDistinctStreamsInput,
+  () => DuplexStreamWithDistinctStreamsOutput,
+];
+export var DuplexStreamWithInitialMessages: StaticOperationSchema = [
+  9,
+  n0,
+  _DSWIM,
+  {
+    [_ht]: ["POST", "/DuplexStreamWithInitialMessages", 200],
+  },
+  () => DuplexStreamWithInitialMessagesInput,
+  () => DuplexStreamWithInitialMessagesOutput,
+];
 export var EmptyInputAndEmptyOutput: StaticOperationSchema = [
   9,
   n0,
@@ -2613,6 +2994,16 @@ export var HttpPrefixHeadersInResponse: StaticOperationSchema = [
   () => HttpPrefixHeadersInResponseInput,
   () => HttpPrefixHeadersInResponseOutput,
 ];
+export var HttpQueryParamsOnlyOperation: StaticOperationSchema = [
+  9,
+  n0,
+  _HQPOO,
+  {
+    [_ht]: ["GET", "/http-query-params-only", 200],
+  },
+  () => HttpQueryParamsOnlyInput,
+  () => __Unit,
+];
 export var HttpRequestWithFloatLabels: StaticOperationSchema = [
   9,
   n0,
@@ -2711,6 +3102,26 @@ export var InputAndOutputWithHeaders: StaticOperationSchema = [
   () => InputAndOutputWithHeadersIO,
   () => InputAndOutputWithHeadersIO,
 ];
+export var InputStream: StaticOperationSchema = [
+  9,
+  n0,
+  _ISn,
+  {
+    [_ht]: ["POST", "/InputStream", 200],
+  },
+  () => InputStreamInput,
+  () => __Unit,
+];
+export var InputStreamWithInitialRequest: StaticOperationSchema = [
+  9,
+  n0,
+  _ISWIR,
+  {
+    [_ht]: ["POST", "/InputStreamWithInitialRequest", 200],
+  },
+  () => InputStreamWithInitialRequestInput,
+  () => __Unit,
+];
 export var JsonBlobs: StaticOperationSchema = [
   9,
   n0,
@@ -2789,7 +3200,7 @@ export var MalformedAcceptWithBody: StaticOperationSchema = [
     [_ht]: ["POST", "/MalformedAcceptWithBody", 200],
   },
   () => __Unit,
-  () => GreetingStruct_n1,
+  () => GreetingStruct,
 ];
 export var MalformedAcceptWithGenericString: StaticOperationSchema = [
   9,
@@ -2848,7 +3259,7 @@ export var MalformedContentTypeWithBody: StaticOperationSchema = [
   {
     [_ht]: ["POST", "/MalformedContentTypeWithBody", 200],
   },
-  () => GreetingStruct_n1,
+  () => GreetingStruct,
   () => __Unit,
 ];
 export var MalformedContentTypeWithGenericString: StaticOperationSchema = [
@@ -3201,6 +3612,26 @@ export var OperationWithNestedStructure: StaticOperationSchema = [
   () => OperationWithNestedStructureInput,
   () => OperationWithNestedStructureOutput,
 ];
+export var OutputStream: StaticOperationSchema = [
+  9,
+  n0,
+  _OS,
+  {
+    [_ht]: ["POST", "/OutputStream", 200],
+  },
+  () => __Unit,
+  () => OutputStreamOutput,
+];
+export var OutputStreamWithInitialResponse: StaticOperationSchema = [
+  9,
+  n0,
+  _OSWIR,
+  {
+    [_ht]: ["POST", "/OutputStreamWithInitialResponse", 200],
+  },
+  () => __Unit,
+  () => OutputStreamWithInitialResponseOutput,
+];
 export var PostPlayerAction: StaticOperationSchema = [
   9,
   n0,
diff --git a/private/aws-protocoltests-restjson-schema/test/functional/restjson1.spec.ts b/private/aws-protocoltests-restjson-schema/test/functional/restjson1.spec.ts
index 49e2e78849f01..1cd35f81ce592 100644
--- a/private/aws-protocoltests-restjson-schema/test/functional/restjson1.spec.ts
+++ b/private/aws-protocoltests-restjson-schema/test/functional/restjson1.spec.ts
@@ -28,6 +28,7 @@ import { HttpPayloadWithStructureCommand } from "../../src/commands/HttpPayloadW
 import { HttpPayloadWithUnionCommand } from "../../src/commands/HttpPayloadWithUnionCommand";
 import { HttpPrefixHeadersCommand } from "../../src/commands/HttpPrefixHeadersCommand";
 import { HttpPrefixHeadersInResponseCommand } from "../../src/commands/HttpPrefixHeadersInResponseCommand";
+import { HttpQueryParamsOnlyOperationCommand } from "../../src/commands/HttpQueryParamsOnlyOperationCommand";
 import { HttpRequestWithFloatLabelsCommand } from "../../src/commands/HttpRequestWithFloatLabelsCommand";
 import { HttpRequestWithGreedyLabelInPathCommand } from "../../src/commands/HttpRequestWithGreedyLabelInPathCommand";
 import { HttpRequestWithLabelsAndTimestampFormatCommand } from "../../src/commands/HttpRequestWithLabelsAndTimestampFormatCommand";
@@ -3191,6 +3192,67 @@ it("HttpPrefixHeadersResponse:Response", async () => {
   });
 });
 
+/**
+ * Test that httpQueryParams are included in request when no other query parameters exist
+ */
+it("HttpQueryParamsOnlyRequest:Request", async () => {
+  const client = new RestJsonProtocolClient({
+    ...clientParams,
+    requestHandler: new RequestSerializationTestHandler(),
+  });
+
+  const command = new HttpQueryParamsOnlyOperationCommand({
+    queryMap: {
+      a: "b",
+      c: "d",
+    } as any,
+  } as any);
+  try {
+    await client.send(command);
+    fail("Expected an EXPECTED_REQUEST_SERIALIZATION_ERROR to be thrown");
+    return;
+  } catch (err) {
+    if (!(err instanceof EXPECTED_REQUEST_SERIALIZATION_ERROR)) {
+      fail(err);
+      return;
+    }
+    const r = err.request;
+    expect(r.method).toBe("GET");
+    expect(r.path).toBe("/http-query-params-only");
+
+    const queryString = buildQueryString(r.query);
+    expect(queryString).toContain("a=b");
+    expect(queryString).toContain("c=d");
+  }
+});
+
+/**
+ * Test that empty httpQueryParams map results in no query parameters
+ */
+it("HttpQueryParamsOnlyEmptyRequest:Request", async () => {
+  const client = new RestJsonProtocolClient({
+    ...clientParams,
+    requestHandler: new RequestSerializationTestHandler(),
+  });
+
+  const command = new HttpQueryParamsOnlyOperationCommand({
+    queryMap: {} as any,
+  } as any);
+  try {
+    await client.send(command);
+    fail("Expected an EXPECTED_REQUEST_SERIALIZATION_ERROR to be thrown");
+    return;
+  } catch (err) {
+    if (!(err instanceof EXPECTED_REQUEST_SERIALIZATION_ERROR)) {
+      fail(err);
+      return;
+    }
+    const r = err.request;
+    expect(r.method).toBe("GET");
+    expect(r.path).toBe("/http-query-params-only");
+  }
+});
+
 /**
  * Supports handling NaN float label values.
  */
diff --git a/private/aws-protocoltests-restjson/README.md b/private/aws-protocoltests-restjson/README.md
index 59cd08f330f39..006c6f5ad4563 100644
--- a/private/aws-protocoltests-restjson/README.md
+++ b/private/aws-protocoltests-restjson/README.md
@@ -6,8 +6,6 @@
 
 AWS SDK for JavaScript RestJsonProtocol Client for Node.js, Browser and React Native.
 
-A REST JSON service that sends JSON requests and responses.
-
 ## Installing
 
 To install this package, simply type add or install @aws-sdk/aws-protocoltests-restjson
@@ -23,16 +21,16 @@ using your favorite package manager:
 
 The AWS SDK is modulized by clients and commands.
 To send a request, you only need to import the `RestJsonProtocolClient` and
-the commands you need, for example `JsonBlobsCommand`:
+the commands you need, for example `InputStreamCommand`:
 
 ```js
 // ES5 example
-const { RestJsonProtocolClient, JsonBlobsCommand } = require("@aws-sdk/aws-protocoltests-restjson");
+const { RestJsonProtocolClient, InputStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson");
 ```
 
 ```ts
 // ES6+ example
-import { RestJsonProtocolClient, JsonBlobsCommand } from "@aws-sdk/aws-protocoltests-restjson";
+import { RestJsonProtocolClient, InputStreamCommand } from "@aws-sdk/aws-protocoltests-restjson";
 ```
 
 ### Usage
@@ -51,7 +49,7 @@ const client = new RestJsonProtocolClient({ region: "REGION" });
 const params = {
   /** input parameters */
 };
-const command = new JsonBlobsCommand(params);
+const command = new InputStreamCommand(params);
 ```
 
 #### Async/await
@@ -130,7 +128,7 @@ const client = new AWS.RestJsonProtocol({ region: "REGION" });
 
 // async/await.
 try {
-  const data = await client.jsonBlobs(params);
+  const data = await client.inputStream(params);
   // process data.
 } catch (error) {
   // error handling.
@@ -138,7 +136,7 @@ try {
 
 // Promises.
 client
-  .jsonBlobs(params)
+  .inputStream(params)
   .then((data) => {
     // process data.
   })
@@ -147,7 +145,7 @@ client
   });
 
 // callbacks.
-client.jsonBlobs(params, (err, data) => {
+client.inputStream(params, (err, data) => {
   // process err and data.
 });
 ```
@@ -1018,6 +1016,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1160,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1240,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1648,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-json-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-json-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restjson/package.json b/private/aws-protocoltests-restjson/package.json
index 5181a25e3344b..fbc0de43fe98b 100644
--- a/private/aws-protocoltests-restjson/package.json
+++ b/private/aws-protocoltests-restjson/package.json
@@ -22,6 +22,8 @@
     "@aws-crypto/sha256-js": "5.2.0",
     "@aws-sdk/core": "*",
     "@aws-sdk/credential-provider-node": "*",
+    "@aws-sdk/eventstream-handler-node": "*",
+    "@aws-sdk/middleware-eventstream": "*",
     "@aws-sdk/middleware-host-header": "*",
     "@aws-sdk/middleware-logger": "*",
     "@aws-sdk/middleware-recursion-detection": "*",
@@ -33,6 +35,10 @@
     "@aws-sdk/util-user-agent-node": "*",
     "@smithy/config-resolver": "^4.4.3",
     "@smithy/core": "^3.18.5",
+    "@smithy/eventstream-codec": "^4.2.5",
+    "@smithy/eventstream-serde-browser": "^4.2.5",
+    "@smithy/eventstream-serde-config-resolver": "^4.3.5",
+    "@smithy/eventstream-serde-node": "^4.2.5",
     "@smithy/fetch-http-handler": "^5.3.6",
     "@smithy/hash-blob-browser": "^4.2.6",
     "@smithy/hash-node": "^4.2.5",
diff --git a/private/aws-protocoltests-restjson/src/RestJsonProtocol.ts b/private/aws-protocoltests-restjson/src/RestJsonProtocol.ts
index 09c418beedef1..0f27ea4c5ea3c 100644
--- a/private/aws-protocoltests-restjson/src/RestJsonProtocol.ts
+++ b/private/aws-protocoltests-restjson/src/RestJsonProtocol.ts
@@ -42,6 +42,21 @@ import {
   DocumentTypeCommandInput,
   DocumentTypeCommandOutput,
 } from "./commands/DocumentTypeCommand";
+import {
+  DuplexStreamCommand,
+  DuplexStreamCommandInput,
+  DuplexStreamCommandOutput,
+} from "./commands/DuplexStreamCommand";
+import {
+  DuplexStreamWithDistinctStreamsCommand,
+  DuplexStreamWithDistinctStreamsCommandInput,
+  DuplexStreamWithDistinctStreamsCommandOutput,
+} from "./commands/DuplexStreamWithDistinctStreamsCommand";
+import {
+  DuplexStreamWithInitialMessagesCommand,
+  DuplexStreamWithInitialMessagesCommandInput,
+  DuplexStreamWithInitialMessagesCommandOutput,
+} from "./commands/DuplexStreamWithInitialMessagesCommand";
 import {
   EmptyInputAndEmptyOutputCommand,
   EmptyInputAndEmptyOutputCommandInput,
@@ -117,6 +132,11 @@ import {
   HttpPrefixHeadersInResponseCommandInput,
   HttpPrefixHeadersInResponseCommandOutput,
 } from "./commands/HttpPrefixHeadersInResponseCommand";
+import {
+  HttpQueryParamsOnlyOperationCommand,
+  HttpQueryParamsOnlyOperationCommandInput,
+  HttpQueryParamsOnlyOperationCommandOutput,
+} from "./commands/HttpQueryParamsOnlyOperationCommand";
 import {
   HttpRequestWithFloatLabelsCommand,
   HttpRequestWithFloatLabelsCommandInput,
@@ -162,6 +182,12 @@ import {
   InputAndOutputWithHeadersCommandInput,
   InputAndOutputWithHeadersCommandOutput,
 } from "./commands/InputAndOutputWithHeadersCommand";
+import { InputStreamCommand, InputStreamCommandInput, InputStreamCommandOutput } from "./commands/InputStreamCommand";
+import {
+  InputStreamWithInitialRequestCommand,
+  InputStreamWithInitialRequestCommandInput,
+  InputStreamWithInitialRequestCommandOutput,
+} from "./commands/InputStreamWithInitialRequestCommand";
 import { JsonBlobsCommand, JsonBlobsCommandInput, JsonBlobsCommandOutput } from "./commands/JsonBlobsCommand";
 import { JsonEnumsCommand, JsonEnumsCommandInput, JsonEnumsCommandOutput } from "./commands/JsonEnumsCommand";
 import {
@@ -387,6 +413,16 @@ import {
   OperationWithNestedStructureCommandInput,
   OperationWithNestedStructureCommandOutput,
 } from "./commands/OperationWithNestedStructureCommand";
+import {
+  OutputStreamCommand,
+  OutputStreamCommandInput,
+  OutputStreamCommandOutput,
+} from "./commands/OutputStreamCommand";
+import {
+  OutputStreamWithInitialResponseCommand,
+  OutputStreamWithInitialResponseCommandInput,
+  OutputStreamWithInitialResponseCommandOutput,
+} from "./commands/OutputStreamWithInitialResponseCommand";
 import {
   PostPlayerActionCommand,
   PostPlayerActionCommandInput,
@@ -518,6 +554,9 @@ const commands = {
   DocumentTypeCommand,
   DocumentTypeAsMapValueCommand,
   DocumentTypeAsPayloadCommand,
+  DuplexStreamCommand,
+  DuplexStreamWithDistinctStreamsCommand,
+  DuplexStreamWithInitialMessagesCommand,
   EmptyInputAndEmptyOutputCommand,
   EndpointOperationCommand,
   EndpointWithHostLabelOperationCommand,
@@ -533,6 +572,7 @@ const commands = {
   HttpPayloadWithUnionCommand,
   HttpPrefixHeadersCommand,
   HttpPrefixHeadersInResponseCommand,
+  HttpQueryParamsOnlyOperationCommand,
   HttpRequestWithFloatLabelsCommand,
   HttpRequestWithGreedyLabelInPathCommand,
   HttpRequestWithLabelsCommand,
@@ -542,6 +582,8 @@ const commands = {
   HttpStringPayloadCommand,
   IgnoreQueryParamsInResponseCommand,
   InputAndOutputWithHeadersCommand,
+  InputStreamCommand,
+  InputStreamWithInitialRequestCommand,
   JsonBlobsCommand,
   JsonEnumsCommand,
   JsonIntEnumsCommand,
@@ -591,6 +633,8 @@ const commands = {
   OmitsSerializingEmptyListsCommand,
   OperationWithDefaultsCommand,
   OperationWithNestedStructureCommand,
+  OutputStreamCommand,
+  OutputStreamWithInitialResponseCommand,
   PostPlayerActionCommand,
   PostUnionWithJsonNameCommand,
   PutWithContentEncodingCommand,
@@ -752,6 +796,53 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: DocumentTypeAsPayloadCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link DuplexStreamCommand}
+   */
+  duplexStream(): Promise<DuplexStreamCommandOutput>;
+  duplexStream(args: DuplexStreamCommandInput, options?: __HttpHandlerOptions): Promise<DuplexStreamCommandOutput>;
+  duplexStream(args: DuplexStreamCommandInput, cb: (err: any, data?: DuplexStreamCommandOutput) => void): void;
+  duplexStream(
+    args: DuplexStreamCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: DuplexStreamCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link DuplexStreamWithDistinctStreamsCommand}
+   */
+  duplexStreamWithDistinctStreams(): Promise<DuplexStreamWithDistinctStreamsCommandOutput>;
+  duplexStreamWithDistinctStreams(
+    args: DuplexStreamWithDistinctStreamsCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<DuplexStreamWithDistinctStreamsCommandOutput>;
+  duplexStreamWithDistinctStreams(
+    args: DuplexStreamWithDistinctStreamsCommandInput,
+    cb: (err: any, data?: DuplexStreamWithDistinctStreamsCommandOutput) => void
+  ): void;
+  duplexStreamWithDistinctStreams(
+    args: DuplexStreamWithDistinctStreamsCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: DuplexStreamWithDistinctStreamsCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link DuplexStreamWithInitialMessagesCommand}
+   */
+  duplexStreamWithInitialMessages(
+    args: DuplexStreamWithInitialMessagesCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<DuplexStreamWithInitialMessagesCommandOutput>;
+  duplexStreamWithInitialMessages(
+    args: DuplexStreamWithInitialMessagesCommandInput,
+    cb: (err: any, data?: DuplexStreamWithInitialMessagesCommandOutput) => void
+  ): void;
+  duplexStreamWithInitialMessages(
+    args: DuplexStreamWithInitialMessagesCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: DuplexStreamWithInitialMessagesCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link EmptyInputAndEmptyOutputCommand}
    */
@@ -1018,6 +1109,24 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: HttpPrefixHeadersInResponseCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link HttpQueryParamsOnlyOperationCommand}
+   */
+  httpQueryParamsOnlyOperation(): Promise<HttpQueryParamsOnlyOperationCommandOutput>;
+  httpQueryParamsOnlyOperation(
+    args: HttpQueryParamsOnlyOperationCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<HttpQueryParamsOnlyOperationCommandOutput>;
+  httpQueryParamsOnlyOperation(
+    args: HttpQueryParamsOnlyOperationCommandInput,
+    cb: (err: any, data?: HttpQueryParamsOnlyOperationCommandOutput) => void
+  ): void;
+  httpQueryParamsOnlyOperation(
+    args: HttpQueryParamsOnlyOperationCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: HttpQueryParamsOnlyOperationCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link HttpRequestWithFloatLabelsCommand}
    */
@@ -1175,6 +1284,35 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: InputAndOutputWithHeadersCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link InputStreamCommand}
+   */
+  inputStream(): Promise<InputStreamCommandOutput>;
+  inputStream(args: InputStreamCommandInput, options?: __HttpHandlerOptions): Promise<InputStreamCommandOutput>;
+  inputStream(args: InputStreamCommandInput, cb: (err: any, data?: InputStreamCommandOutput) => void): void;
+  inputStream(
+    args: InputStreamCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: InputStreamCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link InputStreamWithInitialRequestCommand}
+   */
+  inputStreamWithInitialRequest(
+    args: InputStreamWithInitialRequestCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<InputStreamWithInitialRequestCommandOutput>;
+  inputStreamWithInitialRequest(
+    args: InputStreamWithInitialRequestCommandInput,
+    cb: (err: any, data?: InputStreamWithInitialRequestCommandOutput) => void
+  ): void;
+  inputStreamWithInitialRequest(
+    args: InputStreamWithInitialRequestCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: InputStreamWithInitialRequestCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link JsonBlobsCommand}
    */
@@ -1950,6 +2088,36 @@ export interface RestJsonProtocol {
     cb: (err: any, data?: OperationWithNestedStructureCommandOutput) => void
   ): void;
 
+  /**
+   * @see {@link OutputStreamCommand}
+   */
+  outputStream(): Promise<OutputStreamCommandOutput>;
+  outputStream(args: OutputStreamCommandInput, options?: __HttpHandlerOptions): Promise<OutputStreamCommandOutput>;
+  outputStream(args: OutputStreamCommandInput, cb: (err: any, data?: OutputStreamCommandOutput) => void): void;
+  outputStream(
+    args: OutputStreamCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: OutputStreamCommandOutput) => void
+  ): void;
+
+  /**
+   * @see {@link OutputStreamWithInitialResponseCommand}
+   */
+  outputStreamWithInitialResponse(): Promise<OutputStreamWithInitialResponseCommandOutput>;
+  outputStreamWithInitialResponse(
+    args: OutputStreamWithInitialResponseCommandInput,
+    options?: __HttpHandlerOptions
+  ): Promise<OutputStreamWithInitialResponseCommandOutput>;
+  outputStreamWithInitialResponse(
+    args: OutputStreamWithInitialResponseCommandInput,
+    cb: (err: any, data?: OutputStreamWithInitialResponseCommandOutput) => void
+  ): void;
+  outputStreamWithInitialResponse(
+    args: OutputStreamWithInitialResponseCommandInput,
+    options: __HttpHandlerOptions,
+    cb: (err: any, data?: OutputStreamWithInitialResponseCommandOutput) => void
+  ): void;
+
   /**
    * @see {@link PostPlayerActionCommand}
    */
@@ -2366,7 +2534,6 @@ export interface RestJsonProtocol {
 }
 
 /**
- * A REST JSON service that sends JSON requests and responses.
  * @public
  */
 export class RestJsonProtocol extends RestJsonProtocolClient implements RestJsonProtocol {}
diff --git a/private/aws-protocoltests-restjson/src/RestJsonProtocolClient.ts b/private/aws-protocoltests-restjson/src/RestJsonProtocolClient.ts
index c916cbc4189eb..77dfb6a39592d 100644
--- a/private/aws-protocoltests-restjson/src/RestJsonProtocolClient.ts
+++ b/private/aws-protocoltests-restjson/src/RestJsonProtocolClient.ts
@@ -1,4 +1,9 @@
 // smithy-typescript generated code
+import {
+  EventStreamInputConfig,
+  EventStreamResolvedConfig,
+  resolveEventStreamConfig,
+} from "@aws-sdk/middleware-eventstream";
 import {
   getHostHeaderPlugin,
   HostHeaderInputConfig,
@@ -13,6 +18,7 @@ import {
   UserAgentInputConfig,
   UserAgentResolvedConfig,
 } from "@aws-sdk/middleware-user-agent";
+import { EventStreamPayloadHandlerProvider as __EventStreamPayloadHandlerProvider } from "@aws-sdk/types";
 import {
   DefaultAwsRegionalEndpointsInputConfig,
   DefaultAwsRegionalEndpointsResolvedConfig,
@@ -24,6 +30,11 @@ import {
   getHttpAuthSchemeEndpointRuleSetPlugin,
   getHttpSigningPlugin,
 } from "@smithy/core";
+import {
+  EventStreamSerdeInputConfig,
+  EventStreamSerdeResolvedConfig,
+  resolveEventStreamSerdeConfig,
+} from "@smithy/eventstream-serde-config-resolver";
 import {
   CompressionInputConfig,
   CompressionResolvedConfig,
@@ -48,6 +59,7 @@ import {
   Decoder as __Decoder,
   Encoder as __Encoder,
   EndpointV2 as __EndpointV2,
+  EventStreamSerdeProvider as __EventStreamSerdeProvider,
   HashConstructor as __HashConstructor,
   HttpHandlerOptions as __HttpHandlerOptions,
   Logger as __Logger,
@@ -93,6 +105,15 @@ import {
   DocumentTypeAsPayloadCommandOutput,
 } from "./commands/DocumentTypeAsPayloadCommand";
 import { DocumentTypeCommandInput, DocumentTypeCommandOutput } from "./commands/DocumentTypeCommand";
+import { DuplexStreamCommandInput, DuplexStreamCommandOutput } from "./commands/DuplexStreamCommand";
+import {
+  DuplexStreamWithDistinctStreamsCommandInput,
+  DuplexStreamWithDistinctStreamsCommandOutput,
+} from "./commands/DuplexStreamWithDistinctStreamsCommand";
+import {
+  DuplexStreamWithInitialMessagesCommandInput,
+  DuplexStreamWithInitialMessagesCommandOutput,
+} from "./commands/DuplexStreamWithInitialMessagesCommand";
 import {
   EmptyInputAndEmptyOutputCommandInput,
   EmptyInputAndEmptyOutputCommandOutput,
@@ -135,6 +156,10 @@ import {
   HttpPrefixHeadersInResponseCommandInput,
   HttpPrefixHeadersInResponseCommandOutput,
 } from "./commands/HttpPrefixHeadersInResponseCommand";
+import {
+  HttpQueryParamsOnlyOperationCommandInput,
+  HttpQueryParamsOnlyOperationCommandOutput,
+} from "./commands/HttpQueryParamsOnlyOperationCommand";
 import {
   HttpRequestWithFloatLabelsCommandInput,
   HttpRequestWithFloatLabelsCommandOutput,
@@ -165,6 +190,11 @@ import {
   InputAndOutputWithHeadersCommandInput,
   InputAndOutputWithHeadersCommandOutput,
 } from "./commands/InputAndOutputWithHeadersCommand";
+import { InputStreamCommandInput, InputStreamCommandOutput } from "./commands/InputStreamCommand";
+import {
+  InputStreamWithInitialRequestCommandInput,
+  InputStreamWithInitialRequestCommandOutput,
+} from "./commands/InputStreamWithInitialRequestCommand";
 import { JsonBlobsCommandInput, JsonBlobsCommandOutput } from "./commands/JsonBlobsCommand";
 import { JsonEnumsCommandInput, JsonEnumsCommandOutput } from "./commands/JsonEnumsCommand";
 import { JsonIntEnumsCommandInput, JsonIntEnumsCommandOutput } from "./commands/JsonIntEnumsCommand";
@@ -295,6 +325,11 @@ import {
   OperationWithNestedStructureCommandInput,
   OperationWithNestedStructureCommandOutput,
 } from "./commands/OperationWithNestedStructureCommand";
+import { OutputStreamCommandInput, OutputStreamCommandOutput } from "./commands/OutputStreamCommand";
+import {
+  OutputStreamWithInitialResponseCommandInput,
+  OutputStreamWithInitialResponseCommandOutput,
+} from "./commands/OutputStreamWithInitialResponseCommand";
 import { PostPlayerActionCommandInput, PostPlayerActionCommandOutput } from "./commands/PostPlayerActionCommand";
 import {
   PostUnionWithJsonNameCommandInput,
@@ -381,6 +416,9 @@ export type ServiceInputTypes =
   | DocumentTypeAsMapValueCommandInput
   | DocumentTypeAsPayloadCommandInput
   | DocumentTypeCommandInput
+  | DuplexStreamCommandInput
+  | DuplexStreamWithDistinctStreamsCommandInput
+  | DuplexStreamWithInitialMessagesCommandInput
   | EmptyInputAndEmptyOutputCommandInput
   | EndpointOperationCommandInput
   | EndpointWithHostLabelOperationCommandInput
@@ -396,6 +434,7 @@ export type ServiceInputTypes =
   | HttpPayloadWithUnionCommandInput
   | HttpPrefixHeadersCommandInput
   | HttpPrefixHeadersInResponseCommandInput
+  | HttpQueryParamsOnlyOperationCommandInput
   | HttpRequestWithFloatLabelsCommandInput
   | HttpRequestWithGreedyLabelInPathCommandInput
   | HttpRequestWithLabelsAndTimestampFormatCommandInput
@@ -405,6 +444,8 @@ export type ServiceInputTypes =
   | HttpStringPayloadCommandInput
   | IgnoreQueryParamsInResponseCommandInput
   | InputAndOutputWithHeadersCommandInput
+  | InputStreamCommandInput
+  | InputStreamWithInitialRequestCommandInput
   | JsonBlobsCommandInput
   | JsonEnumsCommandInput
   | JsonIntEnumsCommandInput
@@ -454,6 +495,8 @@ export type ServiceInputTypes =
   | OmitsSerializingEmptyListsCommandInput
   | OperationWithDefaultsCommandInput
   | OperationWithNestedStructureCommandInput
+  | OutputStreamCommandInput
+  | OutputStreamWithInitialResponseCommandInput
   | PostPlayerActionCommandInput
   | PostUnionWithJsonNameCommandInput
   | PutWithContentEncodingCommandInput
@@ -491,6 +534,9 @@ export type ServiceOutputTypes =
   | DocumentTypeAsMapValueCommandOutput
   | DocumentTypeAsPayloadCommandOutput
   | DocumentTypeCommandOutput
+  | DuplexStreamCommandOutput
+  | DuplexStreamWithDistinctStreamsCommandOutput
+  | DuplexStreamWithInitialMessagesCommandOutput
   | EmptyInputAndEmptyOutputCommandOutput
   | EndpointOperationCommandOutput
   | EndpointWithHostLabelOperationCommandOutput
@@ -506,6 +552,7 @@ export type ServiceOutputTypes =
   | HttpPayloadWithUnionCommandOutput
   | HttpPrefixHeadersCommandOutput
   | HttpPrefixHeadersInResponseCommandOutput
+  | HttpQueryParamsOnlyOperationCommandOutput
   | HttpRequestWithFloatLabelsCommandOutput
   | HttpRequestWithGreedyLabelInPathCommandOutput
   | HttpRequestWithLabelsAndTimestampFormatCommandOutput
@@ -515,6 +562,8 @@ export type ServiceOutputTypes =
   | HttpStringPayloadCommandOutput
   | IgnoreQueryParamsInResponseCommandOutput
   | InputAndOutputWithHeadersCommandOutput
+  | InputStreamCommandOutput
+  | InputStreamWithInitialRequestCommandOutput
   | JsonBlobsCommandOutput
   | JsonEnumsCommandOutput
   | JsonIntEnumsCommandOutput
@@ -564,6 +613,8 @@ export type ServiceOutputTypes =
   | OmitsSerializingEmptyListsCommandOutput
   | OperationWithDefaultsCommandOutput
   | OperationWithNestedStructureCommandOutput
+  | OutputStreamCommandOutput
+  | OutputStreamWithInitialResponseCommandOutput
   | PostPlayerActionCommandOutput
   | PostUnionWithJsonNameCommandOutput
   | PutWithContentEncodingCommandOutput
@@ -734,6 +785,11 @@ export interface ClientDefaults extends Partial<__SmithyConfiguration<__HttpHand
    */
   extensions?: RuntimeExtension[];
 
+  /**
+   * The function that provides necessary utilities for generating and parsing event stream
+   */
+  eventStreamSerdeProvider?: __EventStreamSerdeProvider;
+
   /**
    * A function that, given a hash constructor and a stream, calculates the
    * hash of the streamed value.
@@ -753,6 +809,12 @@ export interface ClientDefaults extends Partial<__SmithyConfiguration<__HttpHand
    */
   defaultsMode?: __DefaultsMode | __Provider<__DefaultsMode>;
 
+  /**
+   * The function that provides necessary utilities for handling request event stream.
+   * @internal
+   */
+  eventStreamPayloadHandlerProvider?: __EventStreamPayloadHandlerProvider;
+
   /**
    * The internal function that inject utilities to runtime-specific stream to help users consume the data
    * @internal
@@ -771,7 +833,9 @@ export type RestJsonProtocolClientConfigType = Partial<__SmithyConfiguration<__H
   HostHeaderInputConfig &
   EndpointInputConfig<EndpointParameters> &
   DefaultAwsRegionalEndpointsInputConfig &
+  EventStreamSerdeInputConfig &
   HttpAuthSchemeInputConfig &
+  EventStreamInputConfig &
   CompressionInputConfig &
   ClientInputEndpointParameters;
 /**
@@ -793,7 +857,9 @@ export type RestJsonProtocolClientResolvedConfigType = __SmithyResolvedConfigura
   HostHeaderResolvedConfig &
   EndpointResolvedConfig<EndpointParameters> &
   DefaultAwsRegionalEndpointsResolvedConfig &
+  EventStreamSerdeResolvedConfig &
   HttpAuthSchemeResolvedConfig &
+  EventStreamResolvedConfig &
   CompressionResolvedConfig &
   ClientResolvedEndpointParameters;
 /**
@@ -804,7 +870,6 @@ export type RestJsonProtocolClientResolvedConfigType = __SmithyResolvedConfigura
 export interface RestJsonProtocolClientResolvedConfig extends RestJsonProtocolClientResolvedConfigType {}
 
 /**
- * A REST JSON service that sends JSON requests and responses.
  * @public
  */
 export class RestJsonProtocolClient extends __Client<
@@ -829,10 +894,12 @@ export class RestJsonProtocolClient extends __Client<
     const _config_5 = resolveHostHeaderConfig(_config_4);
     const _config_6 = resolveEndpointConfig(_config_5);
     const _config_7 = resolveDefaultAwsRegionalEndpointsConfig(_config_6);
-    const _config_8 = resolveHttpAuthSchemeConfig(_config_7);
-    const _config_9 = resolveCompressionConfig(_config_8);
-    const _config_10 = resolveRuntimeExtensions(_config_9, configuration?.extensions || []);
-    this.config = _config_10;
+    const _config_8 = resolveEventStreamSerdeConfig(_config_7);
+    const _config_9 = resolveHttpAuthSchemeConfig(_config_8);
+    const _config_10 = resolveEventStreamConfig(_config_9);
+    const _config_11 = resolveCompressionConfig(_config_10);
+    const _config_12 = resolveRuntimeExtensions(_config_11, configuration?.extensions || []);
+    this.config = _config_12;
     this.middlewareStack.use(getUserAgentPlugin(this.config));
     this.middlewareStack.use(getRetryPlugin(this.config));
     this.middlewareStack.use(getContentLengthPlugin(this.config));
diff --git a/private/aws-protocoltests-restjson/src/commands/DuplexStreamCommand.ts b/private/aws-protocoltests-restjson/src/commands/DuplexStreamCommand.ts
new file mode 100644
index 0000000000000..37597c7b5bfb6
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/DuplexStreamCommand.ts
@@ -0,0 +1,190 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import {
+  DuplexStreamInput,
+  DuplexStreamInputFilterSensitiveLog,
+  DuplexStreamOutput,
+  DuplexStreamOutputFilterSensitiveLog,
+} from "../models/models_0";
+import { de_DuplexStreamCommand, se_DuplexStreamCommand } from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link DuplexStreamCommand}.
+ */
+export interface DuplexStreamCommandInput extends DuplexStreamInput {}
+/**
+ * @public
+ *
+ * The output of {@link DuplexStreamCommand}.
+ */
+export interface DuplexStreamCommandOutput extends DuplexStreamOutput, __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, DuplexStreamCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, DuplexStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // DuplexStreamInput
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new DuplexStreamCommand(input);
+ * const response = await client.send(command);
+ * // { // DuplexStreamOutput
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param DuplexStreamCommandInput - {@link DuplexStreamCommandInput}
+ * @returns {@link DuplexStreamCommandOutput}
+ * @see {@link DuplexStreamCommandInput} for command's `input` shape.
+ * @see {@link DuplexStreamCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class DuplexStreamCommand extends $Command
+  .classBuilder<
+    DuplexStreamCommandInput,
+    DuplexStreamCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+      getEventStreamPlugin(config),
+    ];
+  })
+  .s("RestJson", "DuplexStream", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "DuplexStreamCommand")
+  .f(DuplexStreamInputFilterSensitiveLog, DuplexStreamOutputFilterSensitiveLog)
+  .ser(se_DuplexStreamCommand)
+  .de(de_DuplexStreamCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: DuplexStreamInput;
+      output: DuplexStreamOutput;
+    };
+    sdk: {
+      input: DuplexStreamCommandInput;
+      output: DuplexStreamCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/DuplexStreamWithDistinctStreamsCommand.ts b/private/aws-protocoltests-restjson/src/commands/DuplexStreamWithDistinctStreamsCommand.ts
new file mode 100644
index 0000000000000..b7d8ea6005ce7
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/DuplexStreamWithDistinctStreamsCommand.ts
@@ -0,0 +1,157 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import {
+  DuplexStreamWithDistinctStreamsInput,
+  DuplexStreamWithDistinctStreamsInputFilterSensitiveLog,
+  DuplexStreamWithDistinctStreamsOutput,
+} from "../models/models_0";
+import {
+  de_DuplexStreamWithDistinctStreamsCommand,
+  se_DuplexStreamWithDistinctStreamsCommand,
+} from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link DuplexStreamWithDistinctStreamsCommand}.
+ */
+export interface DuplexStreamWithDistinctStreamsCommandInput extends DuplexStreamWithDistinctStreamsInput {}
+/**
+ * @public
+ *
+ * The output of {@link DuplexStreamWithDistinctStreamsCommand}.
+ */
+export interface DuplexStreamWithDistinctStreamsCommandOutput
+  extends DuplexStreamWithDistinctStreamsOutput,
+    __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, DuplexStreamWithDistinctStreamsCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, DuplexStreamWithDistinctStreamsCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // DuplexStreamWithDistinctStreamsInput
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new DuplexStreamWithDistinctStreamsCommand(input);
+ * const response = await client.send(command);
+ * // { // DuplexStreamWithDistinctStreamsOutput
+ * //   stream: { // SingletonEventStream Union: only one key present
+ * //     singleton: { // SingletonEvent
+ * //       value: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param DuplexStreamWithDistinctStreamsCommandInput - {@link DuplexStreamWithDistinctStreamsCommandInput}
+ * @returns {@link DuplexStreamWithDistinctStreamsCommandOutput}
+ * @see {@link DuplexStreamWithDistinctStreamsCommandInput} for command's `input` shape.
+ * @see {@link DuplexStreamWithDistinctStreamsCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class DuplexStreamWithDistinctStreamsCommand extends $Command
+  .classBuilder<
+    DuplexStreamWithDistinctStreamsCommandInput,
+    DuplexStreamWithDistinctStreamsCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+      getEventStreamPlugin(config),
+    ];
+  })
+  .s("RestJson", "DuplexStreamWithDistinctStreams", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "DuplexStreamWithDistinctStreamsCommand")
+  .f(DuplexStreamWithDistinctStreamsInputFilterSensitiveLog, void 0)
+  .ser(se_DuplexStreamWithDistinctStreamsCommand)
+  .de(de_DuplexStreamWithDistinctStreamsCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: DuplexStreamWithDistinctStreamsInput;
+      output: DuplexStreamWithDistinctStreamsOutput;
+    };
+    sdk: {
+      input: DuplexStreamWithDistinctStreamsCommandInput;
+      output: DuplexStreamWithDistinctStreamsCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/DuplexStreamWithInitialMessagesCommand.ts b/private/aws-protocoltests-restjson/src/commands/DuplexStreamWithInitialMessagesCommand.ts
new file mode 100644
index 0000000000000..222c43d19777e
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/DuplexStreamWithInitialMessagesCommand.ts
@@ -0,0 +1,199 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import {
+  DuplexStreamWithInitialMessagesInput,
+  DuplexStreamWithInitialMessagesInputFilterSensitiveLog,
+  DuplexStreamWithInitialMessagesOutput,
+  DuplexStreamWithInitialMessagesOutputFilterSensitiveLog,
+} from "../models/models_0";
+import {
+  de_DuplexStreamWithInitialMessagesCommand,
+  se_DuplexStreamWithInitialMessagesCommand,
+} from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link DuplexStreamWithInitialMessagesCommand}.
+ */
+export interface DuplexStreamWithInitialMessagesCommandInput extends DuplexStreamWithInitialMessagesInput {}
+/**
+ * @public
+ *
+ * The output of {@link DuplexStreamWithInitialMessagesCommand}.
+ */
+export interface DuplexStreamWithInitialMessagesCommandOutput
+  extends DuplexStreamWithInitialMessagesOutput,
+    __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, DuplexStreamWithInitialMessagesCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, DuplexStreamWithInitialMessagesCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // DuplexStreamWithInitialMessagesInput
+ *   initialRequestMember: "STRING_VALUE", // required
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new DuplexStreamWithInitialMessagesCommand(input);
+ * const response = await client.send(command);
+ * // { // DuplexStreamWithInitialMessagesOutput
+ * //   initialResponseMember: "STRING_VALUE", // required
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param DuplexStreamWithInitialMessagesCommandInput - {@link DuplexStreamWithInitialMessagesCommandInput}
+ * @returns {@link DuplexStreamWithInitialMessagesCommandOutput}
+ * @see {@link DuplexStreamWithInitialMessagesCommandInput} for command's `input` shape.
+ * @see {@link DuplexStreamWithInitialMessagesCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link ServiceUnavailableError} (server fault)
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class DuplexStreamWithInitialMessagesCommand extends $Command
+  .classBuilder<
+    DuplexStreamWithInitialMessagesCommandInput,
+    DuplexStreamWithInitialMessagesCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+      getEventStreamPlugin(config),
+    ];
+  })
+  .s("RestJson", "DuplexStreamWithInitialMessages", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "DuplexStreamWithInitialMessagesCommand")
+  .f(DuplexStreamWithInitialMessagesInputFilterSensitiveLog, DuplexStreamWithInitialMessagesOutputFilterSensitiveLog)
+  .ser(se_DuplexStreamWithInitialMessagesCommand)
+  .de(de_DuplexStreamWithInitialMessagesCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: DuplexStreamWithInitialMessagesInput;
+      output: DuplexStreamWithInitialMessagesOutput;
+    };
+    sdk: {
+      input: DuplexStreamWithInitialMessagesCommandInput;
+      output: DuplexStreamWithInitialMessagesCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/HttpQueryParamsOnlyOperationCommand.ts b/private/aws-protocoltests-restjson/src/commands/HttpQueryParamsOnlyOperationCommand.ts
new file mode 100644
index 0000000000000..998b010c4a9b9
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/HttpQueryParamsOnlyOperationCommand.ts
@@ -0,0 +1,98 @@
+// smithy-typescript generated code
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { HttpQueryParamsOnlyInput } from "../models/models_0";
+import {
+  de_HttpQueryParamsOnlyOperationCommand,
+  se_HttpQueryParamsOnlyOperationCommand,
+} from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link HttpQueryParamsOnlyOperationCommand}.
+ */
+export interface HttpQueryParamsOnlyOperationCommandInput extends HttpQueryParamsOnlyInput {}
+/**
+ * @public
+ *
+ * The output of {@link HttpQueryParamsOnlyOperationCommand}.
+ */
+export interface HttpQueryParamsOnlyOperationCommandOutput extends __MetadataBearer {}
+
+/**
+ * This example tests httpQueryParams when no other query parameters exist.
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, HttpQueryParamsOnlyOperationCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, HttpQueryParamsOnlyOperationCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // HttpQueryParamsOnlyInput
+ *   queryMap: { // QueryMap
+ *     "<keys>": "STRING_VALUE",
+ *   },
+ * };
+ * const command = new HttpQueryParamsOnlyOperationCommand(input);
+ * const response = await client.send(command);
+ * // {};
+ *
+ * ```
+ *
+ * @param HttpQueryParamsOnlyOperationCommandInput - {@link HttpQueryParamsOnlyOperationCommandInput}
+ * @returns {@link HttpQueryParamsOnlyOperationCommandOutput}
+ * @see {@link HttpQueryParamsOnlyOperationCommandInput} for command's `input` shape.
+ * @see {@link HttpQueryParamsOnlyOperationCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ * @public
+ */
+export class HttpQueryParamsOnlyOperationCommand extends $Command
+  .classBuilder<
+    HttpQueryParamsOnlyOperationCommandInput,
+    HttpQueryParamsOnlyOperationCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+    ];
+  })
+  .s("RestJson", "HttpQueryParamsOnlyOperation", {})
+  .n("RestJsonProtocolClient", "HttpQueryParamsOnlyOperationCommand")
+  .f(void 0, void 0)
+  .ser(se_HttpQueryParamsOnlyOperationCommand)
+  .de(de_HttpQueryParamsOnlyOperationCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: HttpQueryParamsOnlyInput;
+      output: {};
+    };
+    sdk: {
+      input: HttpQueryParamsOnlyOperationCommandInput;
+      output: HttpQueryParamsOnlyOperationCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/InputStreamCommand.ts b/private/aws-protocoltests-restjson/src/commands/InputStreamCommand.ts
new file mode 100644
index 0000000000000..9f9b10ca4ce18
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/InputStreamCommand.ts
@@ -0,0 +1,142 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { InputStreamInput, InputStreamInputFilterSensitiveLog } from "../models/models_0";
+import { de_InputStreamCommand, se_InputStreamCommand } from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link InputStreamCommand}.
+ */
+export interface InputStreamCommandInput extends InputStreamInput {}
+/**
+ * @public
+ *
+ * The output of {@link InputStreamCommand}.
+ */
+export interface InputStreamCommandOutput extends __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, InputStreamCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, InputStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // InputStreamInput
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new InputStreamCommand(input);
+ * const response = await client.send(command);
+ * // {};
+ *
+ * ```
+ *
+ * @param InputStreamCommandInput - {@link InputStreamCommandInput}
+ * @returns {@link InputStreamCommandOutput}
+ * @see {@link InputStreamCommandInput} for command's `input` shape.
+ * @see {@link InputStreamCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class InputStreamCommand extends $Command
+  .classBuilder<
+    InputStreamCommandInput,
+    InputStreamCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+      getEventStreamPlugin(config),
+    ];
+  })
+  .s("RestJson", "InputStream", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "InputStreamCommand")
+  .f(InputStreamInputFilterSensitiveLog, void 0)
+  .ser(se_InputStreamCommand)
+  .de(de_InputStreamCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: InputStreamInput;
+      output: {};
+    };
+    sdk: {
+      input: InputStreamCommandInput;
+      output: InputStreamCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/InputStreamWithInitialRequestCommand.ts b/private/aws-protocoltests-restjson/src/commands/InputStreamWithInitialRequestCommand.ts
new file mode 100644
index 0000000000000..68b51e6925b89
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/InputStreamWithInitialRequestCommand.ts
@@ -0,0 +1,149 @@
+// smithy-typescript generated code
+import { getEventStreamPlugin } from "@aws-sdk/middleware-eventstream";
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import {
+  InputStreamWithInitialRequestInput,
+  InputStreamWithInitialRequestInputFilterSensitiveLog,
+} from "../models/models_0";
+import {
+  de_InputStreamWithInitialRequestCommand,
+  se_InputStreamWithInitialRequestCommand,
+} from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link InputStreamWithInitialRequestCommand}.
+ */
+export interface InputStreamWithInitialRequestCommandInput extends InputStreamWithInitialRequestInput {}
+/**
+ * @public
+ *
+ * The output of {@link InputStreamWithInitialRequestCommand}.
+ */
+export interface InputStreamWithInitialRequestCommandOutput extends __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, InputStreamWithInitialRequestCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, InputStreamWithInitialRequestCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = { // InputStreamWithInitialRequestInput
+ *   initialRequestMember: "STRING_VALUE", // required
+ *   stream: { // EventStream Union: only one key present
+ *     headers: { // HeadersEvent
+ *       booleanHeader: true || false,
+ *       byteHeader: 0, // BYTE_VALUE
+ *       shortHeader: Number("short"),
+ *       intHeader: Number("int"),
+ *       longHeader: Number("long"),
+ *       blobHeader: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *       stringHeader: "STRING_VALUE",
+ *       timestampHeader: new Date("TIMESTAMP"),
+ *     },
+ *     blobPayload: { // BlobPayloadEvent
+ *       payload: new Uint8Array(), // e.g. Buffer.from("") or new TextEncoder().encode("")
+ *     },
+ *     stringPayload: { // StringPayloadEvent
+ *       payload: "STRING_VALUE",
+ *     },
+ *     structurePayload: { // StructurePayloadEvent
+ *       payload: { // PayloadStructure
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     unionPayload: { // UnionPayloadEvent
+ *       payload: { // PayloadUnion Union: only one key present
+ *         unionMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: {
+ *         structureMember: "STRING_VALUE",
+ *       },
+ *     },
+ *     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ *       header: "STRING_VALUE",
+ *       payload: "STRING_VALUE",
+ *     },
+ *     error: { // ErrorEvent
+ *       message: "STRING_VALUE",
+ *     },
+ *   },
+ * };
+ * const command = new InputStreamWithInitialRequestCommand(input);
+ * const response = await client.send(command);
+ * // {};
+ *
+ * ```
+ *
+ * @param InputStreamWithInitialRequestCommandInput - {@link InputStreamWithInitialRequestCommandInput}
+ * @returns {@link InputStreamWithInitialRequestCommandOutput}
+ * @see {@link InputStreamWithInitialRequestCommandInput} for command's `input` shape.
+ * @see {@link InputStreamWithInitialRequestCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class InputStreamWithInitialRequestCommand extends $Command
+  .classBuilder<
+    InputStreamWithInitialRequestCommandInput,
+    InputStreamWithInitialRequestCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+      getEventStreamPlugin(config),
+    ];
+  })
+  .s("RestJson", "InputStreamWithInitialRequest", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      input: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "InputStreamWithInitialRequestCommand")
+  .f(InputStreamWithInitialRequestInputFilterSensitiveLog, void 0)
+  .ser(se_InputStreamWithInitialRequestCommand)
+  .de(de_InputStreamWithInitialRequestCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: InputStreamWithInitialRequestInput;
+      output: {};
+    };
+    sdk: {
+      input: InputStreamWithInitialRequestCommandInput;
+      output: InputStreamWithInitialRequestCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/OutputStreamCommand.ts b/private/aws-protocoltests-restjson/src/commands/OutputStreamCommand.ts
new file mode 100644
index 0000000000000..b8f63ea0431f5
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/OutputStreamCommand.ts
@@ -0,0 +1,142 @@
+// smithy-typescript generated code
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import { OutputStreamOutput, OutputStreamOutputFilterSensitiveLog } from "../models/models_0";
+import { de_OutputStreamCommand, se_OutputStreamCommand } from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link OutputStreamCommand}.
+ */
+export interface OutputStreamCommandInput {}
+/**
+ * @public
+ *
+ * The output of {@link OutputStreamCommand}.
+ */
+export interface OutputStreamCommandOutput extends OutputStreamOutput, __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, OutputStreamCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, OutputStreamCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = {};
+ * const command = new OutputStreamCommand(input);
+ * const response = await client.send(command);
+ * // { // OutputStreamOutput
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param OutputStreamCommandInput - {@link OutputStreamCommandInput}
+ * @returns {@link OutputStreamCommandOutput}
+ * @see {@link OutputStreamCommandInput} for command's `input` shape.
+ * @see {@link OutputStreamCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link ServiceUnavailableError} (server fault)
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class OutputStreamCommand extends $Command
+  .classBuilder<
+    OutputStreamCommandInput,
+    OutputStreamCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+    ];
+  })
+  .s("RestJson", "OutputStream", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "OutputStreamCommand")
+  .f(void 0, OutputStreamOutputFilterSensitiveLog)
+  .ser(se_OutputStreamCommand)
+  .de(de_OutputStreamCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: {};
+      output: OutputStreamOutput;
+    };
+    sdk: {
+      input: OutputStreamCommandInput;
+      output: OutputStreamCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/OutputStreamWithInitialResponseCommand.ts b/private/aws-protocoltests-restjson/src/commands/OutputStreamWithInitialResponseCommand.ts
new file mode 100644
index 0000000000000..5ee9ac9fdabe4
--- /dev/null
+++ b/private/aws-protocoltests-restjson/src/commands/OutputStreamWithInitialResponseCommand.ts
@@ -0,0 +1,149 @@
+// smithy-typescript generated code
+import { getEndpointPlugin } from "@smithy/middleware-endpoint";
+import { getSerdePlugin } from "@smithy/middleware-serde";
+import { Command as $Command } from "@smithy/smithy-client";
+import { MetadataBearer as __MetadataBearer } from "@smithy/types";
+
+import { commonParams } from "../endpoint/EndpointParameters";
+import {
+  OutputStreamWithInitialResponseOutput,
+  OutputStreamWithInitialResponseOutputFilterSensitiveLog,
+} from "../models/models_0";
+import {
+  de_OutputStreamWithInitialResponseCommand,
+  se_OutputStreamWithInitialResponseCommand,
+} from "../protocols/Aws_restJson1";
+import { RestJsonProtocolClientResolvedConfig, ServiceInputTypes, ServiceOutputTypes } from "../RestJsonProtocolClient";
+
+/**
+ * @public
+ */
+export type { __MetadataBearer };
+export { $Command };
+/**
+ * @public
+ *
+ * The input for {@link OutputStreamWithInitialResponseCommand}.
+ */
+export interface OutputStreamWithInitialResponseCommandInput {}
+/**
+ * @public
+ *
+ * The output of {@link OutputStreamWithInitialResponseCommand}.
+ */
+export interface OutputStreamWithInitialResponseCommandOutput
+  extends OutputStreamWithInitialResponseOutput,
+    __MetadataBearer {}
+
+/**
+ * @public
+ *
+ * @example
+ * Use a bare-bones client and the command you need to make an API call.
+ * ```javascript
+ * import { RestJsonProtocolClient, OutputStreamWithInitialResponseCommand } from "@aws-sdk/aws-protocoltests-restjson"; // ES Modules import
+ * // const { RestJsonProtocolClient, OutputStreamWithInitialResponseCommand } = require("@aws-sdk/aws-protocoltests-restjson"); // CommonJS import
+ * // import type { RestJsonProtocolClientConfig } from "@aws-sdk/aws-protocoltests-restjson";
+ * const config = {}; // type is RestJsonProtocolClientConfig
+ * const client = new RestJsonProtocolClient(config);
+ * const input = {};
+ * const command = new OutputStreamWithInitialResponseCommand(input);
+ * const response = await client.send(command);
+ * // { // OutputStreamWithInitialResponseOutput
+ * //   initialResponseMember: "STRING_VALUE", // required
+ * //   stream: { // EventStream Union: only one key present
+ * //     headers: { // HeadersEvent
+ * //       booleanHeader: true || false,
+ * //       byteHeader: 0, // BYTE_VALUE
+ * //       shortHeader: Number("short"),
+ * //       intHeader: Number("int"),
+ * //       longHeader: Number("long"),
+ * //       blobHeader: new Uint8Array(),
+ * //       stringHeader: "STRING_VALUE",
+ * //       timestampHeader: new Date("TIMESTAMP"),
+ * //     },
+ * //     blobPayload: { // BlobPayloadEvent
+ * //       payload: new Uint8Array(),
+ * //     },
+ * //     stringPayload: { // StringPayloadEvent
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     structurePayload: { // StructurePayloadEvent
+ * //       payload: { // PayloadStructure
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     unionPayload: { // UnionPayloadEvent
+ * //       payload: { // PayloadUnion Union: only one key present
+ * //         unionMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndExplicitPayload: { // HeadersAndExplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: {
+ * //         structureMember: "STRING_VALUE",
+ * //       },
+ * //     },
+ * //     headersAndImplicitPayload: { // HeadersAndImplicitPayloadEvent
+ * //       header: "STRING_VALUE",
+ * //       payload: "STRING_VALUE",
+ * //     },
+ * //     error: { // ErrorEvent
+ * //       message: "STRING_VALUE",
+ * //     },
+ * //   },
+ * // };
+ *
+ * ```
+ *
+ * @param OutputStreamWithInitialResponseCommandInput - {@link OutputStreamWithInitialResponseCommandInput}
+ * @returns {@link OutputStreamWithInitialResponseCommandOutput}
+ * @see {@link OutputStreamWithInitialResponseCommandInput} for command's `input` shape.
+ * @see {@link OutputStreamWithInitialResponseCommandOutput} for command's `response` shape.
+ * @see {@link RestJsonProtocolClientResolvedConfig | config} for RestJsonProtocolClient's `config` shape.
+ *
+ * @throws {@link RestJsonProtocolServiceException}
+ * <p>Base exception class for all service exceptions from RestJsonProtocol service.</p>
+ *
+ *
+ */
+export class OutputStreamWithInitialResponseCommand extends $Command
+  .classBuilder<
+    OutputStreamWithInitialResponseCommandInput,
+    OutputStreamWithInitialResponseCommandOutput,
+    RestJsonProtocolClientResolvedConfig,
+    ServiceInputTypes,
+    ServiceOutputTypes
+  >()
+  .ep(commonParams)
+  .m(function (this: any, Command: any, cs: any, config: RestJsonProtocolClientResolvedConfig, o: any) {
+    return [
+      getSerdePlugin(config, this.serialize, this.deserialize),
+      getEndpointPlugin(config, Command.getEndpointParameterInstructions()),
+    ];
+  })
+  .s("RestJson", "OutputStreamWithInitialResponse", {
+    /**
+     * @internal
+     */
+    eventStream: {
+      output: true,
+    },
+  })
+  .n("RestJsonProtocolClient", "OutputStreamWithInitialResponseCommand")
+  .f(void 0, OutputStreamWithInitialResponseOutputFilterSensitiveLog)
+  .ser(se_OutputStreamWithInitialResponseCommand)
+  .de(de_OutputStreamWithInitialResponseCommand)
+  .build() {
+  /** @internal type navigation helper, not in runtime. */
+  protected declare static __types: {
+    api: {
+      input: {};
+      output: OutputStreamWithInitialResponseOutput;
+    };
+    sdk: {
+      input: OutputStreamWithInitialResponseCommandInput;
+      output: OutputStreamWithInitialResponseCommandOutput;
+    };
+  };
+}
diff --git a/private/aws-protocoltests-restjson/src/commands/index.ts b/private/aws-protocoltests-restjson/src/commands/index.ts
index f7eda19004821..de51781237b5e 100644
--- a/private/aws-protocoltests-restjson/src/commands/index.ts
+++ b/private/aws-protocoltests-restjson/src/commands/index.ts
@@ -7,6 +7,9 @@ export * from "./DatetimeOffsetsCommand";
 export * from "./DocumentTypeAsMapValueCommand";
 export * from "./DocumentTypeAsPayloadCommand";
 export * from "./DocumentTypeCommand";
+export * from "./DuplexStreamCommand";
+export * from "./DuplexStreamWithDistinctStreamsCommand";
+export * from "./DuplexStreamWithInitialMessagesCommand";
 export * from "./EmptyInputAndEmptyOutputCommand";
 export * from "./EndpointOperationCommand";
 export * from "./EndpointWithHostLabelOperationCommand";
@@ -22,6 +25,7 @@ export * from "./HttpPayloadWithStructureCommand";
 export * from "./HttpPayloadWithUnionCommand";
 export * from "./HttpPrefixHeadersCommand";
 export * from "./HttpPrefixHeadersInResponseCommand";
+export * from "./HttpQueryParamsOnlyOperationCommand";
 export * from "./HttpRequestWithFloatLabelsCommand";
 export * from "./HttpRequestWithGreedyLabelInPathCommand";
 export * from "./HttpRequestWithLabelsAndTimestampFormatCommand";
@@ -31,6 +35,8 @@ export * from "./HttpResponseCodeCommand";
 export * from "./HttpStringPayloadCommand";
 export * from "./IgnoreQueryParamsInResponseCommand";
 export * from "./InputAndOutputWithHeadersCommand";
+export * from "./InputStreamCommand";
+export * from "./InputStreamWithInitialRequestCommand";
 export * from "./JsonBlobsCommand";
 export * from "./JsonEnumsCommand";
 export * from "./JsonIntEnumsCommand";
@@ -80,6 +86,8 @@ export * from "./OmitsNullSerializesEmptyStringCommand";
 export * from "./OmitsSerializingEmptyListsCommand";
 export * from "./OperationWithDefaultsCommand";
 export * from "./OperationWithNestedStructureCommand";
+export * from "./OutputStreamCommand";
+export * from "./OutputStreamWithInitialResponseCommand";
 export * from "./PostPlayerActionCommand";
 export * from "./PostUnionWithJsonNameCommand";
 export * from "./PutWithContentEncodingCommand";
diff --git a/private/aws-protocoltests-restjson/src/index.ts b/private/aws-protocoltests-restjson/src/index.ts
index c9920e5b09f8c..378b1c6297a90 100644
--- a/private/aws-protocoltests-restjson/src/index.ts
+++ b/private/aws-protocoltests-restjson/src/index.ts
@@ -1,10 +1,5 @@
 // smithy-typescript generated code
 /* eslint-disable */
-/**
- * A REST JSON service that sends JSON requests and responses.
- *
- * @packageDocumentation
- */
 export * from "./RestJsonProtocolClient";
 export * from "./RestJsonProtocol";
 export { ClientInputEndpointParameters } from "./endpoint/EndpointParameters";
diff --git a/private/aws-protocoltests-restjson/src/models/errors.ts b/private/aws-protocoltests-restjson/src/models/errors.ts
index f6cbb02088ef0..bd41d2117bd95 100644
--- a/private/aws-protocoltests-restjson/src/models/errors.ts
+++ b/private/aws-protocoltests-restjson/src/models/errors.ts
@@ -30,6 +30,44 @@ export class ComplexError extends __BaseException {
   }
 }
 
+/**
+ * @public
+ */
+export class ErrorEvent extends __BaseException {
+  readonly name = "ErrorEvent" as const;
+  readonly $fault = "client" as const;
+  /**
+   * @internal
+   */
+  constructor(opts: __ExceptionOptionType<ErrorEvent, __BaseException>) {
+    super({
+      name: "ErrorEvent",
+      $fault: "client",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, ErrorEvent.prototype);
+  }
+}
+
+/**
+ * @public
+ */
+export class ServiceUnavailableError extends __BaseException {
+  readonly name = "ServiceUnavailableError" as const;
+  readonly $fault = "server" as const;
+  /**
+   * @internal
+   */
+  constructor(opts: __ExceptionOptionType<ServiceUnavailableError, __BaseException>) {
+    super({
+      name: "ServiceUnavailableError",
+      $fault: "server",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, ServiceUnavailableError.prototype);
+  }
+}
+
 /**
  * This error has test cases that test some of the dark corners of Amazon service
  * framework history. It should only be implemented by clients.
diff --git a/private/aws-protocoltests-restjson/src/models/models_0.ts b/private/aws-protocoltests-restjson/src/models/models_0.ts
index 99967ccdcecce..8a81292feeb14 100644
--- a/private/aws-protocoltests-restjson/src/models/models_0.ts
+++ b/private/aws-protocoltests-restjson/src/models/models_0.ts
@@ -3,6 +3,7 @@ import { AutomaticJsonStringConversion as __AutomaticJsonStringConversion } from
 import { DocumentType as __DocumentType, StreamingBlobTypes } from "@smithy/types";
 
 import { FooEnum, IntegerEnum, StringEnum, TestEnum, TestIntEnum } from "./enums";
+import { ErrorEvent } from "./errors";
 
 /**
  * @public
@@ -38,6 +39,13 @@ export interface AllQueryStringTypesInput {
   queryParamsMapOfStringList?: Record<string, string[]> | undefined;
 }
 
+/**
+ * @public
+ */
+export interface BlobPayloadEvent {
+  payload?: Uint8Array | undefined;
+}
+
 /**
  * @public
  */
@@ -158,6 +166,397 @@ export interface DocumentTypeAsPayloadInputOutput {
   documentValue?: __DocumentType | undefined;
 }
 
+/**
+ * @public
+ */
+export interface HeadersEvent {
+  booleanHeader?: boolean | undefined;
+  byteHeader?: number | undefined;
+  shortHeader?: number | undefined;
+  intHeader?: number | undefined;
+  longHeader?: number | undefined;
+  blobHeader?: Uint8Array | undefined;
+  stringHeader?: string | undefined;
+  timestampHeader?: Date | undefined;
+}
+
+/**
+ * @public
+ */
+export interface PayloadStructure {
+  structureMember?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export interface HeadersAndExplicitPayloadEvent {
+  header?: string | undefined;
+  payload?: PayloadStructure | undefined;
+}
+
+/**
+ * @public
+ */
+export interface HeadersAndImplicitPayloadEvent {
+  header?: string | undefined;
+  payload?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export interface StringPayloadEvent {
+  payload?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export interface StructurePayloadEvent {
+  payload?: PayloadStructure | undefined;
+}
+
+/**
+ * @public
+ */
+export type PayloadUnion = PayloadUnion.UnionMemberMember | PayloadUnion.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace PayloadUnion {
+  export interface UnionMemberMember {
+    unionMember: string;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    unionMember?: never;
+    $unknown: [string, any];
+  }
+
+  export interface Visitor<T> {
+    unionMember: (value: string) => T;
+    _: (name: string, value: any) => T;
+  }
+
+  export const visit = <T>(value: PayloadUnion, visitor: Visitor<T>): T => {
+    if (value.unionMember !== undefined) return visitor.unionMember(value.unionMember);
+    return visitor._(value.$unknown[0], value.$unknown[1]);
+  };
+}
+
+/**
+ * @public
+ */
+export interface UnionPayloadEvent {
+  payload?: PayloadUnion | undefined;
+}
+
+/**
+ * @public
+ */
+export type EventStream =
+  | EventStream.BlobPayloadMember
+  | EventStream.ErrorMember
+  | EventStream.HeadersMember
+  | EventStream.HeadersAndExplicitPayloadMember
+  | EventStream.HeadersAndImplicitPayloadMember
+  | EventStream.StringPayloadMember
+  | EventStream.StructurePayloadMember
+  | EventStream.UnionPayloadMember
+  | EventStream.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace EventStream {
+  export interface HeadersMember {
+    headers: HeadersEvent;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface BlobPayloadMember {
+    headers?: never;
+    blobPayload: BlobPayloadEvent;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface StringPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload: StringPayloadEvent;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface StructurePayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload: StructurePayloadEvent;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface UnionPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload: UnionPayloadEvent;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface HeadersAndExplicitPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload: HeadersAndExplicitPayloadEvent;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface HeadersAndImplicitPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload: HeadersAndImplicitPayloadEvent;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface ErrorMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error: ErrorEvent;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown: [string, any];
+  }
+
+  export interface Visitor<T> {
+    headers: (value: HeadersEvent) => T;
+    blobPayload: (value: BlobPayloadEvent) => T;
+    stringPayload: (value: StringPayloadEvent) => T;
+    structurePayload: (value: StructurePayloadEvent) => T;
+    unionPayload: (value: UnionPayloadEvent) => T;
+    headersAndExplicitPayload: (value: HeadersAndExplicitPayloadEvent) => T;
+    headersAndImplicitPayload: (value: HeadersAndImplicitPayloadEvent) => T;
+    error: (value: ErrorEvent) => T;
+    _: (name: string, value: any) => T;
+  }
+
+  export const visit = <T>(value: EventStream, visitor: Visitor<T>): T => {
+    if (value.headers !== undefined) return visitor.headers(value.headers);
+    if (value.blobPayload !== undefined) return visitor.blobPayload(value.blobPayload);
+    if (value.stringPayload !== undefined) return visitor.stringPayload(value.stringPayload);
+    if (value.structurePayload !== undefined) return visitor.structurePayload(value.structurePayload);
+    if (value.unionPayload !== undefined) return visitor.unionPayload(value.unionPayload);
+    if (value.headersAndExplicitPayload !== undefined)
+      return visitor.headersAndExplicitPayload(value.headersAndExplicitPayload);
+    if (value.headersAndImplicitPayload !== undefined)
+      return visitor.headersAndImplicitPayload(value.headersAndImplicitPayload);
+    if (value.error !== undefined) return visitor.error(value.error);
+    return visitor._(value.$unknown[0], value.$unknown[1]);
+  };
+}
+/**
+ * @internal
+ */
+export const EventStreamFilterSensitiveLog = (obj: EventStream): any => {
+  if (obj.headers !== undefined) return { headers: obj.headers };
+  if (obj.blobPayload !== undefined) return { blobPayload: obj.blobPayload };
+  if (obj.stringPayload !== undefined) return { stringPayload: obj.stringPayload };
+  if (obj.structurePayload !== undefined) return { structurePayload: obj.structurePayload };
+  if (obj.unionPayload !== undefined) return { unionPayload: obj.unionPayload };
+  if (obj.headersAndExplicitPayload !== undefined) return { headersAndExplicitPayload: obj.headersAndExplicitPayload };
+  if (obj.headersAndImplicitPayload !== undefined) return { headersAndImplicitPayload: obj.headersAndImplicitPayload };
+  if (obj.error !== undefined) return { error: obj.error };
+  if (obj.$unknown !== undefined) return { [obj.$unknown[0]]: "UNKNOWN" };
+};
+
+/**
+ * @public
+ */
+export interface DuplexStreamInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamInputFilterSensitiveLog = (obj: DuplexStreamInput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
+/**
+ * @public
+ */
+export interface DuplexStreamOutput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamOutputFilterSensitiveLog = (obj: DuplexStreamOutput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithDistinctStreamsInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamWithDistinctStreamsInputFilterSensitiveLog = (
+  obj: DuplexStreamWithDistinctStreamsInput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
+/**
+ * @public
+ */
+export interface SingletonEvent {
+  value?: string | undefined;
+}
+
+/**
+ * @public
+ */
+export type SingletonEventStream = SingletonEventStream.SingletonMember | SingletonEventStream.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace SingletonEventStream {
+  export interface SingletonMember {
+    singleton: SingletonEvent;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    singleton?: never;
+    $unknown: [string, any];
+  }
+
+  export interface Visitor<T> {
+    singleton: (value: SingletonEvent) => T;
+    _: (name: string, value: any) => T;
+  }
+
+  export const visit = <T>(value: SingletonEventStream, visitor: Visitor<T>): T => {
+    if (value.singleton !== undefined) return visitor.singleton(value.singleton);
+    return visitor._(value.$unknown[0], value.$unknown[1]);
+  };
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithDistinctStreamsOutput {
+  stream?: SingletonEventStream | undefined;
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithInitialMessagesInput {
+  initialRequestMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamWithInitialMessagesInputFilterSensitiveLog = (
+  obj: DuplexStreamWithInitialMessagesInput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithInitialMessagesOutput {
+  initialResponseMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamWithInitialMessagesOutputFilterSensitiveLog = (
+  obj: DuplexStreamWithInitialMessagesOutput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
 /**
  * @public
  */
@@ -318,6 +717,13 @@ export interface HttpPrefixHeadersInResponseOutput {
   prefixHeaders?: Record<string, string> | undefined;
 }
 
+/**
+ * @public
+ */
+export interface HttpQueryParamsOnlyInput {
+  queryMap?: Record<string, string> | undefined;
+}
+
 /**
  * @public
  */
@@ -422,6 +828,37 @@ export interface InputAndOutputWithHeadersIO {
   headerIntegerEnumList?: IntegerEnum[] | undefined;
 }
 
+/**
+ * @public
+ */
+export interface InputStreamInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const InputStreamInputFilterSensitiveLog = (obj: InputStreamInput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
+/**
+ * @public
+ */
+export interface InputStreamWithInitialRequestInput {
+  initialRequestMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const InputStreamWithInitialRequestInputFilterSensitiveLog = (obj: InputStreamWithInitialRequestInput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
 /**
  * @public
  */
@@ -1124,6 +1561,39 @@ export interface OperationWithNestedStructureOutput {
   dialogMap?: Record<string, Dialog> | undefined;
 }
 
+/**
+ * @public
+ */
+export interface OutputStreamOutput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const OutputStreamOutputFilterSensitiveLog = (obj: OutputStreamOutput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
+/**
+ * @public
+ */
+export interface OutputStreamWithInitialResponseOutput {
+  initialResponseMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const OutputStreamWithInitialResponseOutputFilterSensitiveLog = (
+  obj: OutputStreamWithInitialResponseOutput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+
 /**
  * @public
  */
diff --git a/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts b/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts
index b23ab0d961a12..51ce07fa49d4d 100644
--- a/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts
+++ b/private/aws-protocoltests-restjson/src/protocols/Aws_restJson1.ts
@@ -6,6 +6,7 @@ import {
   parseJsonErrorBody as parseErrorBody,
 } from "@aws-sdk/core";
 import { requestBuilder as rb } from "@smithy/core";
+import { Int64 as __Int64 } from "@smithy/eventstream-codec";
 import {
   HttpRequest as __HttpRequest,
   HttpResponse as __HttpResponse,
@@ -54,6 +55,9 @@ import {
 import {
   DocumentType as __DocumentType,
   Endpoint as __Endpoint,
+  EventStreamSerdeContext as __EventStreamSerdeContext,
+  Message as __Message,
+  MessageHeaders as __MessageHeaders,
   ResponseMetadata as __ResponseMetadata,
   SdkStreamSerdeContext as __SdkStreamSerdeContext,
   SerdeContext as __SerdeContext,
@@ -86,6 +90,15 @@ import {
   DocumentTypeAsPayloadCommandOutput,
 } from "../commands/DocumentTypeAsPayloadCommand";
 import { DocumentTypeCommandInput, DocumentTypeCommandOutput } from "../commands/DocumentTypeCommand";
+import { DuplexStreamCommandInput, DuplexStreamCommandOutput } from "../commands/DuplexStreamCommand";
+import {
+  DuplexStreamWithDistinctStreamsCommandInput,
+  DuplexStreamWithDistinctStreamsCommandOutput,
+} from "../commands/DuplexStreamWithDistinctStreamsCommand";
+import {
+  DuplexStreamWithInitialMessagesCommandInput,
+  DuplexStreamWithInitialMessagesCommandOutput,
+} from "../commands/DuplexStreamWithInitialMessagesCommand";
 import {
   EmptyInputAndEmptyOutputCommandInput,
   EmptyInputAndEmptyOutputCommandOutput,
@@ -128,6 +141,10 @@ import {
   HttpPrefixHeadersInResponseCommandInput,
   HttpPrefixHeadersInResponseCommandOutput,
 } from "../commands/HttpPrefixHeadersInResponseCommand";
+import {
+  HttpQueryParamsOnlyOperationCommandInput,
+  HttpQueryParamsOnlyOperationCommandOutput,
+} from "../commands/HttpQueryParamsOnlyOperationCommand";
 import {
   HttpRequestWithFloatLabelsCommandInput,
   HttpRequestWithFloatLabelsCommandOutput,
@@ -158,6 +175,11 @@ import {
   InputAndOutputWithHeadersCommandInput,
   InputAndOutputWithHeadersCommandOutput,
 } from "../commands/InputAndOutputWithHeadersCommand";
+import { InputStreamCommandInput, InputStreamCommandOutput } from "../commands/InputStreamCommand";
+import {
+  InputStreamWithInitialRequestCommandInput,
+  InputStreamWithInitialRequestCommandOutput,
+} from "../commands/InputStreamWithInitialRequestCommand";
 import { JsonBlobsCommandInput, JsonBlobsCommandOutput } from "../commands/JsonBlobsCommand";
 import { JsonEnumsCommandInput, JsonEnumsCommandOutput } from "../commands/JsonEnumsCommand";
 import { JsonIntEnumsCommandInput, JsonIntEnumsCommandOutput } from "../commands/JsonIntEnumsCommand";
@@ -288,6 +310,11 @@ import {
   OperationWithNestedStructureCommandInput,
   OperationWithNestedStructureCommandOutput,
 } from "../commands/OperationWithNestedStructureCommand";
+import { OutputStreamCommandInput, OutputStreamCommandOutput } from "../commands/OutputStreamCommand";
+import {
+  OutputStreamWithInitialResponseCommandInput,
+  OutputStreamWithInitialResponseCommandOutput,
+} from "../commands/OutputStreamWithInitialResponseCommand";
 import { PostPlayerActionCommandInput, PostPlayerActionCommandOutput } from "../commands/PostPlayerActionCommand";
 import {
   PostUnionWithJsonNameCommandInput,
@@ -352,26 +379,36 @@ import {
 } from "../commands/TimestampFormatHeadersCommand";
 import { UnitInputAndOutputCommandInput, UnitInputAndOutputCommandOutput } from "../commands/UnitInputAndOutputCommand";
 import { FooEnum, IntegerEnum } from "../models/enums";
-import { ComplexError, FooError, InvalidGreeting } from "../models/errors";
+import { ComplexError, ErrorEvent, FooError, InvalidGreeting, ServiceUnavailableError } from "../models/errors";
 import {
+  BlobPayloadEvent,
   ClientOptionalDefaults,
   ComplexNestedErrorData,
   Defaults,
   Dialog,
+  EventStream,
   Farewell,
   GreetingStruct,
+  HeadersAndExplicitPayloadEvent,
+  HeadersAndImplicitPayloadEvent,
+  HeadersEvent,
   MyUnion,
   NestedPayload,
   PayloadConfig,
+  PayloadStructure,
+  PayloadUnion,
   PlayerAction,
   RecursiveShapesInputOutputNested1,
   RecursiveShapesInputOutputNested2,
   RenamedGreeting,
   SimpleUnion,
+  StringPayloadEvent,
   StructureListMember,
+  StructurePayloadEvent,
   TestConfig,
   TopLevel,
   UnionPayload,
+  UnionPayloadEvent,
   UnionWithJsonName,
   Unit,
 } from "../models/models_0";
@@ -586,6 +623,67 @@ export const se_DocumentTypeAsPayloadCommand = async (
   return b.build();
 };
 
+/**
+ * serializeAws_restJson1DuplexStreamCommand
+ */
+export const se_DuplexStreamCommand = async (
+  input: DuplexStreamCommandInput,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = {
+    "content-type": "application/json",
+  };
+  b.bp("/DuplexStream");
+  let body: any;
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
+/**
+ * serializeAws_restJson1DuplexStreamWithDistinctStreamsCommand
+ */
+export const se_DuplexStreamWithDistinctStreamsCommand = async (
+  input: DuplexStreamWithDistinctStreamsCommandInput,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = {
+    "content-type": "application/json",
+  };
+  b.bp("/DuplexStreamWithDistinctStreams");
+  let body: any;
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
+/**
+ * serializeAws_restJson1DuplexStreamWithInitialMessagesCommand
+ */
+export const se_DuplexStreamWithInitialMessagesCommand = async (
+  input: DuplexStreamWithInitialMessagesCommandInput,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+    [_irm]: input[_iRM]!,
+  });
+  b.bp("/DuplexStreamWithInitialMessages");
+  let body: any;
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
 /**
  * serializeAws_restJson1EmptyInputAndEmptyOutputCommand
  */
@@ -894,6 +992,24 @@ export const se_HttpPrefixHeadersInResponseCommand = async (
   return b.build();
 };
 
+/**
+ * serializeAws_restJson1HttpQueryParamsOnlyOperationCommand
+ */
+export const se_HttpQueryParamsOnlyOperationCommand = async (
+  input: HttpQueryParamsOnlyOperationCommandInput,
+  context: __SerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = {};
+  b.bp("/http-query-params-only");
+  const query: any = map({
+    ...convertMap(input.queryMap),
+  });
+  let body: any;
+  b.m("GET").h(headers).q(query).b(body);
+  return b.build();
+};
+
 /**
  * serializeAws_restJson1HttpRequestWithFloatLabelsCommand
  */
@@ -1103,6 +1219,47 @@ export const se_InputAndOutputWithHeadersCommand = async (
   return b.build();
 };
 
+/**
+ * serializeAws_restJson1InputStreamCommand
+ */
+export const se_InputStreamCommand = async (
+  input: InputStreamCommandInput,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = {
+    "content-type": "application/json",
+  };
+  b.bp("/InputStream");
+  let body: any;
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
+/**
+ * serializeAws_restJson1InputStreamWithInitialRequestCommand
+ */
+export const se_InputStreamWithInitialRequestCommand = async (
+  input: InputStreamWithInitialRequestCommandInput,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+    [_irm]: input[_iRM]!,
+  });
+  b.bp("/InputStreamWithInitialRequest");
+  let body: any;
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
 /**
  * serializeAws_restJson1JsonBlobsCommand
  */
@@ -2178,6 +2335,36 @@ export const se_OperationWithNestedStructureCommand = async (
   return b.build();
 };
 
+/**
+ * serializeAws_restJson1OutputStreamCommand
+ */
+export const se_OutputStreamCommand = async (
+  input: OutputStreamCommandInput,
+  context: __SerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = {};
+  b.bp("/OutputStream");
+  let body: any;
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
+/**
+ * serializeAws_restJson1OutputStreamWithInitialResponseCommand
+ */
+export const se_OutputStreamWithInitialResponseCommand = async (
+  input: OutputStreamWithInitialResponseCommandInput,
+  context: __SerdeContext
+): Promise<__HttpRequest> => {
+  const b = rb(input, context);
+  const headers: any = {};
+  b.bp("/OutputStreamWithInitialResponse");
+  let body: any;
+  b.m("POST").h(headers).b(body);
+  return b.build();
+};
+
 /**
  * serializeAws_restJson1PostPlayerActionCommand
  */
@@ -2817,6 +3004,63 @@ export const de_DocumentTypeAsPayloadCommand = async (
   return contents;
 };
 
+/**
+ * deserializeAws_restJson1DuplexStreamCommand
+ */
+export const de_DuplexStreamCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<DuplexStreamCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+  });
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
+/**
+ * deserializeAws_restJson1DuplexStreamWithDistinctStreamsCommand
+ */
+export const de_DuplexStreamWithDistinctStreamsCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext
+): Promise<DuplexStreamWithDistinctStreamsCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+  });
+  const data: Record<string, any> | undefined = await parseBody(output.body, context);
+  if (Object.keys(data ?? {}).length) {
+    contents.stream = __expectUnion(_json(data));
+  }
+  return contents;
+};
+
+/**
+ * deserializeAws_restJson1DuplexStreamWithInitialMessagesCommand
+ */
+export const de_DuplexStreamWithInitialMessagesCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<DuplexStreamWithInitialMessagesCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+    [_iRMn]: [, output.headers[_irm_]],
+  });
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
 /**
  * deserializeAws_restJson1EmptyInputAndEmptyOutputCommand
  */
@@ -3119,6 +3363,23 @@ export const de_HttpPrefixHeadersInResponseCommand = async (
   return contents;
 };
 
+/**
+ * deserializeAws_restJson1HttpQueryParamsOnlyOperationCommand
+ */
+export const de_HttpQueryParamsOnlyOperationCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext
+): Promise<HttpQueryParamsOnlyOperationCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+  });
+  await collectBody(output.body, context);
+  return contents;
+};
+
 /**
  * deserializeAws_restJson1HttpRequestWithFloatLabelsCommand
  */
@@ -3322,6 +3583,40 @@ export const de_InputAndOutputWithHeadersCommand = async (
   return contents;
 };
 
+/**
+ * deserializeAws_restJson1InputStreamCommand
+ */
+export const de_InputStreamCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext
+): Promise<InputStreamCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+  });
+  await collectBody(output.body, context);
+  return contents;
+};
+
+/**
+ * deserializeAws_restJson1InputStreamWithInitialRequestCommand
+ */
+export const de_InputStreamWithInitialRequestCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext
+): Promise<InputStreamWithInitialRequestCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+  });
+  await collectBody(output.body, context);
+  return contents;
+};
+
 /**
  * deserializeAws_restJson1JsonBlobsCommand
  */
@@ -4270,6 +4565,43 @@ export const de_OperationWithNestedStructureCommand = async (
   return contents;
 };
 
+/**
+ * deserializeAws_restJson1OutputStreamCommand
+ */
+export const de_OutputStreamCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<OutputStreamCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+  });
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
+/**
+ * deserializeAws_restJson1OutputStreamWithInitialResponseCommand
+ */
+export const de_OutputStreamWithInitialResponseCommand = async (
+  output: __HttpResponse,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<OutputStreamWithInitialResponseCommandOutput> => {
+  if (output.statusCode !== 200 && output.statusCode >= 300) {
+    return de_CommandError(output, context);
+  }
+  const contents: any = map({
+    $metadata: deserializeMetadata(output),
+    [_iRMn]: [, output.headers[_irm_]],
+  });
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
 /**
  * deserializeAws_restJson1PostPlayerActionCommand
  */
@@ -4767,6 +5099,9 @@ const de_CommandError = async (output: __HttpResponse, context: __SerdeContext):
   };
   const errorCode = loadRestJsonErrorCode(output, parsedOutput.body);
   switch (errorCode) {
+    case "ServiceUnavailableError":
+    case "aws.protocoltests.restjson#ServiceUnavailableError":
+      throw await de_ServiceUnavailableErrorRes(parsedOutput, context);
     case "ComplexError":
     case "aws.protocoltests.restjson#ComplexError":
       throw await de_ComplexErrorRes(parsedOutput, context);
@@ -4839,6 +5174,352 @@ const de_InvalidGreetingRes = async (parsedOutput: any, context: __SerdeContext)
   return __decorateServiceException(exception, parsedOutput.body);
 };
 
+/**
+ * deserializeAws_restJson1ServiceUnavailableErrorRes
+ */
+const de_ServiceUnavailableErrorRes = async (
+  parsedOutput: any,
+  context: __SerdeContext
+): Promise<ServiceUnavailableError> => {
+  const contents: any = map({});
+  const data: any = parsedOutput.body;
+  const doc = take(data, {
+    message: __expectString,
+  });
+  Object.assign(contents, doc);
+  const exception = new ServiceUnavailableError({
+    $metadata: deserializeMetadata(parsedOutput),
+    ...contents,
+  });
+  return __decorateServiceException(exception, parsedOutput.body);
+};
+
+/**
+ * serializeAws_restJson1EventStream
+ */
+const se_EventStream = (input: any, context: __SerdeContext & __EventStreamSerdeContext): any => {
+  const eventMarshallingVisitor = (event: any): __Message =>
+    EventStream.visit(event, {
+      headers: (value) => se_HeadersEvent_event(value, context),
+      blobPayload: (value) => se_BlobPayloadEvent_event(value, context),
+      stringPayload: (value) => se_StringPayloadEvent_event(value, context),
+      structurePayload: (value) => se_StructurePayloadEvent_event(value, context),
+      unionPayload: (value) => se_UnionPayloadEvent_event(value, context),
+      headersAndExplicitPayload: (value) => se_HeadersAndExplicitPayloadEvent_event(value, context),
+      headersAndImplicitPayload: (value) => se_HeadersAndImplicitPayloadEvent_event(value, context),
+      error: (value) => se_ErrorEvent_event(value, context),
+      _: (value) => value as any,
+    });
+  return context.eventStreamMarshaller.serialize(input, eventMarshallingVisitor);
+};
+const se_BlobPayloadEvent_event = (input: BlobPayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "blobPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/octet-stream" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = input.payload;
+  }
+  return { headers, body };
+};
+const se_ErrorEvent_event = (input: ErrorEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "error" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  let body = new Uint8Array();
+  body = _json(input);
+  body = context.utf8Decoder(JSON.stringify(body));
+  return { headers, body };
+};
+const se_HeadersAndExplicitPayloadEvent_event = (
+  input: HeadersAndExplicitPayloadEvent,
+  context: __SerdeContext
+): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "headersAndExplicitPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  if (input.header != null) {
+    headers["header"] = { type: "string", value: input.header };
+  }
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = _json(input.payload);
+    body = context.utf8Decoder(JSON.stringify(body));
+  }
+  return { headers, body };
+};
+const se_HeadersAndImplicitPayloadEvent_event = (
+  input: HeadersAndImplicitPayloadEvent,
+  context: __SerdeContext
+): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "headersAndImplicitPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  if (input.header != null) {
+    headers["header"] = { type: "string", value: input.header };
+  }
+  let body = new Uint8Array();
+  delete input["header"];
+  body = _json(input);
+  body = context.utf8Decoder(JSON.stringify(body));
+  return { headers, body };
+};
+const se_HeadersEvent_event = (input: HeadersEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "headers" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  if (input.booleanHeader != null) {
+    headers["booleanHeader"] = { type: "boolean", value: input.booleanHeader };
+  }
+  if (input.byteHeader != null) {
+    headers["byteHeader"] = { type: "byte", value: input.byteHeader };
+  }
+  if (input.shortHeader != null) {
+    headers["shortHeader"] = { type: "short", value: input.shortHeader };
+  }
+  if (input.intHeader != null) {
+    headers["intHeader"] = { type: "integer", value: input.intHeader };
+  }
+  if (input.longHeader != null) {
+    headers["longHeader"] = { type: "long", value: __Int64.fromNumber(input.longHeader) };
+  }
+  if (input.blobHeader != null) {
+    headers["blobHeader"] = { type: "binary", value: input.blobHeader };
+  }
+  if (input.stringHeader != null) {
+    headers["stringHeader"] = { type: "string", value: input.stringHeader };
+  }
+  if (input.timestampHeader != null) {
+    headers["timestampHeader"] = { type: "timestamp", value: input.timestampHeader };
+  }
+  let body = new Uint8Array();
+  delete input["booleanHeader"];
+  delete input["byteHeader"];
+  delete input["shortHeader"];
+  delete input["intHeader"];
+  delete input["longHeader"];
+  delete input["blobHeader"];
+  delete input["stringHeader"];
+  delete input["timestampHeader"];
+  body = se_HeadersEvent(input, context);
+  body = context.utf8Decoder(JSON.stringify(body));
+  return { headers, body };
+};
+const se_StringPayloadEvent_event = (input: StringPayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "stringPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "text/plain" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = context.utf8Decoder(input.payload);
+  }
+  return { headers, body };
+};
+const se_StructurePayloadEvent_event = (input: StructurePayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "structurePayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = _json(input.payload);
+    body = context.utf8Decoder(JSON.stringify(body));
+  }
+  return { headers, body };
+};
+const se_UnionPayloadEvent_event = (input: UnionPayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "unionPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = _json(input.payload);
+    body = context.utf8Decoder(JSON.stringify(body));
+  }
+  return { headers, body };
+};
+/**
+ * deserializeAws_restJson1EventStream
+ */
+const de_EventStream = (
+  output: any,
+  context: __SerdeContext & __EventStreamSerdeContext
+): AsyncIterable<EventStream> => {
+  return context.eventStreamMarshaller.deserialize(output, async (event) => {
+    if (event["headers"] != null) {
+      return {
+        headers: await de_HeadersEvent_event(event["headers"], context),
+      };
+    }
+    if (event["blobPayload"] != null) {
+      return {
+        blobPayload: await de_BlobPayloadEvent_event(event["blobPayload"], context),
+      };
+    }
+    if (event["stringPayload"] != null) {
+      return {
+        stringPayload: await de_StringPayloadEvent_event(event["stringPayload"], context),
+      };
+    }
+    if (event["structurePayload"] != null) {
+      return {
+        structurePayload: await de_StructurePayloadEvent_event(event["structurePayload"], context),
+      };
+    }
+    if (event["unionPayload"] != null) {
+      return {
+        unionPayload: await de_UnionPayloadEvent_event(event["unionPayload"], context),
+      };
+    }
+    if (event["headersAndExplicitPayload"] != null) {
+      return {
+        headersAndExplicitPayload: await de_HeadersAndExplicitPayloadEvent_event(
+          event["headersAndExplicitPayload"],
+          context
+        ),
+      };
+    }
+    if (event["headersAndImplicitPayload"] != null) {
+      return {
+        headersAndImplicitPayload: await de_HeadersAndImplicitPayloadEvent_event(
+          event["headersAndImplicitPayload"],
+          context
+        ),
+      };
+    }
+    if (event["error"] != null) {
+      return {
+        error: await de_ErrorEvent_event(event["error"], context),
+      };
+    }
+    return { $unknown: event as any };
+  });
+};
+const de_BlobPayloadEvent_event = async (output: any, context: __SerdeContext): Promise<BlobPayloadEvent> => {
+  const contents: BlobPayloadEvent = {} as any;
+  contents.payload = output.body;
+  return contents;
+};
+const de_ErrorEvent_event = async (output: any, context: __SerdeContext): Promise<ErrorEvent> => {
+  const parsedOutput: any = {
+    ...output,
+    body: await parseBody(output.body, context),
+  };
+  return de_ErrorEventRes(parsedOutput, context);
+};
+const de_HeadersAndExplicitPayloadEvent_event = async (
+  output: any,
+  context: __SerdeContext
+): Promise<HeadersAndExplicitPayloadEvent> => {
+  const contents: HeadersAndExplicitPayloadEvent = {} as any;
+  if (output.headers[_he] !== undefined) {
+    contents[_he] = output.headers[_he].value;
+  }
+
+  const data: any = await parseBody(output.body, context);
+  contents.payload = _json(data);
+  return contents;
+};
+const de_HeadersAndImplicitPayloadEvent_event = async (
+  output: any,
+  context: __SerdeContext
+): Promise<HeadersAndImplicitPayloadEvent> => {
+  const contents: HeadersAndImplicitPayloadEvent = {} as any;
+  if (output.headers[_he] !== undefined) {
+    contents[_he] = output.headers[_he].value;
+  }
+
+  const data: any = await parseBody(output.body, context);
+  Object.assign(contents, _json(data));
+  return contents;
+};
+const de_HeadersEvent_event = async (output: any, context: __SerdeContext): Promise<HeadersEvent> => {
+  const contents: HeadersEvent = {} as any;
+  if (output.headers[_bH] !== undefined) {
+    contents[_bH] = output.headers[_bH].value;
+  }
+
+  if (output.headers[_bHy] !== undefined) {
+    contents[_bHy] = output.headers[_bHy].value;
+  }
+
+  if (output.headers[_sHh] !== undefined) {
+    contents[_sHh] = output.headers[_sHh].value;
+  }
+
+  if (output.headers[_iH] !== undefined) {
+    contents[_iH] = output.headers[_iH].value;
+  }
+
+  if (output.headers[_lH] !== undefined) {
+    contents[_lH] = output.headers[_lH].value;
+  }
+
+  if (output.headers[_bHl] !== undefined) {
+    contents[_bHl] = output.headers[_bHl].value;
+  }
+
+  if (output.headers[_sHt] !== undefined) {
+    contents[_sHt] = output.headers[_sHt].value;
+  }
+
+  if (output.headers[_tH] !== undefined) {
+    contents[_tH] = output.headers[_tH].value;
+  }
+
+  const data: any = await parseBody(output.body, context);
+  Object.assign(contents, de_HeadersEvent(data, context));
+  return contents;
+};
+const de_StringPayloadEvent_event = async (output: any, context: __SerdeContext): Promise<StringPayloadEvent> => {
+  const contents: StringPayloadEvent = {} as any;
+  contents.payload = await collectBodyString(output.body, context);
+  return contents;
+};
+const de_StructurePayloadEvent_event = async (output: any, context: __SerdeContext): Promise<StructurePayloadEvent> => {
+  const contents: StructurePayloadEvent = {} as any;
+  const data: any = await parseBody(output.body, context);
+  contents.payload = _json(data);
+  return contents;
+};
+const de_UnionPayloadEvent_event = async (output: any, context: __SerdeContext): Promise<UnionPayloadEvent> => {
+  const contents: UnionPayloadEvent = {} as any;
+  const data: any = await parseBody(output.body, context);
+  contents.payload = _json(data);
+  return contents;
+};
+/**
+ * deserializeAws_restJson1ErrorEventRes
+ */
+const de_ErrorEventRes = async (parsedOutput: any, context: __SerdeContext): Promise<ErrorEvent> => {
+  const contents: any = map({});
+  const data: any = parsedOutput.body;
+  const doc = take(data, {
+    message: __expectString,
+  });
+  Object.assign(contents, doc);
+  const exception = new ErrorEvent({
+    $metadata: deserializeMetadata(parsedOutput),
+    ...contents,
+  });
+  return __decorateServiceException(exception, parsedOutput.body);
+};
+
 // se_ClientOptionalDefaults omitted.
 
 /**
@@ -4913,8 +5594,28 @@ const se_DocumentValuedMap = (input: Record<string, __DocumentType>, context: __
   }, {});
 };
 
+// se_ErrorEvent omitted.
+
 // se_Farewell omitted.
 
+// se_HeadersAndImplicitPayloadEvent omitted.
+
+/**
+ * serializeAws_restJson1HeadersEvent
+ */
+const se_HeadersEvent = (input: HeadersEvent, context: __SerdeContext): any => {
+  return take(input, {
+    blobHeader: context.base64Encoder,
+    booleanHeader: [],
+    byteHeader: [],
+    intHeader: [],
+    longHeader: [],
+    shortHeader: [],
+    stringHeader: [],
+    timestampHeader: __serializeDateTime,
+  });
+};
+
 /**
  * serializeAws_restJson1MyUnion
  */
@@ -4938,6 +5639,10 @@ const se_MyUnion = (input: MyUnion, context: __SerdeContext): any => {
 
 // se_PayloadConfig omitted.
 
+// se_PayloadStructure omitted.
+
+// se_PayloadUnion omitted.
+
 // se_PlayerAction omitted.
 
 /**
@@ -5187,6 +5892,24 @@ const de_DocumentValuedMap = (output: any, context: __SerdeContext): Record<stri
 
 // de_Farewell omitted.
 
+// de_HeadersAndImplicitPayloadEvent omitted.
+
+/**
+ * deserializeAws_restJson1HeadersEvent
+ */
+const de_HeadersEvent = (output: any, context: __SerdeContext): HeadersEvent => {
+  return take(output, {
+    blobHeader: context.base64Decoder,
+    booleanHeader: __expectBoolean,
+    byteHeader: __expectByte,
+    intHeader: __expectInt32,
+    longHeader: __expectLong,
+    shortHeader: __expectShort,
+    stringHeader: __expectString,
+    timestampHeader: (_: any) => __expectNonNull(__parseRfc3339DateTimeWithOffset(_)),
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1MyUnion
  */
@@ -5240,6 +5963,10 @@ const de_MyUnion = (output: any, context: __SerdeContext): MyUnion => {
 
 // de_PayloadConfig omitted.
 
+// de_PayloadStructure omitted.
+
+// de_PayloadUnion omitted.
+
 // de_PlayerAction omitted.
 
 /**
@@ -5268,6 +5995,10 @@ const de_RecursiveShapesInputOutputNested2 = (
   }) as any;
 };
 
+// de_SingletonEvent omitted.
+
+// de_SingletonEventStream omitted.
+
 /**
  * deserializeAws_restJson1SparseBooleanMap
  */
@@ -5490,6 +6221,9 @@ const _TL = "TimestampList";
 const _a = "a";
 const _amth = "amz-media-typed-header";
 const _b = "baz";
+const _bH = "booleanHeader";
+const _bHl = "blobHeader";
+const _bHy = "byteHeader";
 const _bIH = "booleanInHeader";
 const _bIHy = "byteInHeader";
 const _bIQ = "booleanInQuery";
@@ -5536,10 +6270,16 @@ const _hTB = "headerTrueBool";
 const _hTL = "headerTimestampList";
 const _he = "header";
 const _i = "integerinheader";
+const _iH = "intHeader";
 const _iIH = "integerInHeader";
 const _iIQ = "integerInQuery";
+const _iRM = "initialRequestMember";
+const _iRMn = "initialResponseMember";
+const _irm = "initial-request-member";
+const _irm_ = "initial-response-member";
 const _j = "json";
 const _l = "longinheader";
+const _lH = "longHeader";
 const _lIH = "longInHeader";
 const _lIQ = "longInQuery";
 const _mDT = "memberDateTime";
@@ -5570,11 +6310,14 @@ const _qT = "queryTimestamp";
 const _qTL = "queryTimestampList";
 const _s = "shortinheader";
 const _sH = "specificHeader";
+const _sHh = "shortHeader";
+const _sHt = "stringHeader";
 const _sIH = "shortInHeader";
 const _sIQ = "shortInQuery";
 const _t = "timestamp";
 const _tDT = "targetDateTime";
 const _tES = "targetEpochSeconds";
+const _tH = "timestampHeader";
 const _tHD = "targetHttpDate";
 const _tI = "testId";
 const _to = "token";
diff --git a/private/aws-protocoltests-restjson/src/runtimeConfig.browser.ts b/private/aws-protocoltests-restjson/src/runtimeConfig.browser.ts
index 397966de10cf6..2b16c22f9d875 100644
--- a/private/aws-protocoltests-restjson/src/runtimeConfig.browser.ts
+++ b/private/aws-protocoltests-restjson/src/runtimeConfig.browser.ts
@@ -5,9 +5,10 @@ import packageInfo from "../package.json"; // eslint-disable-line
 import { Sha256 } from "@aws-crypto/sha256-browser";
 import { createDefaultUserAgentProvider } from "@aws-sdk/util-user-agent-browser";
 import { DEFAULT_USE_DUALSTACK_ENDPOINT, DEFAULT_USE_FIPS_ENDPOINT } from "@smithy/config-resolver";
+import { eventStreamSerdeProvider } from "@smithy/eventstream-serde-browser";
 import { FetchHttpHandler as RequestHandler, streamCollector } from "@smithy/fetch-http-handler";
 import { blobHasher as streamHasher } from "@smithy/hash-blob-browser";
-import { invalidProvider } from "@smithy/invalid-dependency";
+import { invalidFunction, invalidProvider } from "@smithy/invalid-dependency";
 import { Md5 } from "@smithy/md5-js";
 import {
   DEFAULT_DISABLE_REQUEST_COMPRESSION,
@@ -39,6 +40,10 @@ export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
       config?.defaultUserAgentProvider ??
       createDefaultUserAgentProvider({ serviceId: clientSharedValues.serviceId, clientVersion: packageInfo.version }),
     disableRequestCompression: config?.disableRequestCompression ?? DEFAULT_DISABLE_REQUEST_COMPRESSION,
+    eventStreamPayloadHandlerProvider:
+      config?.eventStreamPayloadHandlerProvider ??
+      (() => ({ handle: invalidFunction("event stream request is not supported in browser.") })),
+    eventStreamSerdeProvider: config?.eventStreamSerdeProvider ?? eventStreamSerdeProvider,
     maxAttempts: config?.maxAttempts ?? DEFAULT_MAX_ATTEMPTS,
     md5: config?.md5 ?? Md5,
     region: config?.region ?? invalidProvider("Region is missing"),
diff --git a/private/aws-protocoltests-restjson/src/runtimeConfig.native.ts b/private/aws-protocoltests-restjson/src/runtimeConfig.native.ts
index 48bc89d417bd9..413dc1c065160 100644
--- a/private/aws-protocoltests-restjson/src/runtimeConfig.native.ts
+++ b/private/aws-protocoltests-restjson/src/runtimeConfig.native.ts
@@ -1,5 +1,6 @@
 // smithy-typescript generated code
 import { Sha256 } from "@aws-crypto/sha256-js";
+import { invalidFunction } from "@smithy/invalid-dependency";
 
 import { RestJsonProtocolClientConfig } from "./RestJsonProtocolClient";
 import { getRuntimeConfig as getBrowserRuntimeConfig } from "./runtimeConfig.browser";
@@ -13,6 +14,9 @@ export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
     ...browserDefaults,
     ...config,
     runtime: "react-native",
+    eventStreamPayloadHandlerProvider:
+      config?.eventStreamPayloadHandlerProvider ??
+      (() => ({ handle: invalidFunction("event stream request is not supported in ReactNative.") })),
     sha256: config?.sha256 ?? Sha256,
   };
 };
diff --git a/private/aws-protocoltests-restjson/src/runtimeConfig.ts b/private/aws-protocoltests-restjson/src/runtimeConfig.ts
index f5f4b2fb3ca27..bdc0958ab8a38 100644
--- a/private/aws-protocoltests-restjson/src/runtimeConfig.ts
+++ b/private/aws-protocoltests-restjson/src/runtimeConfig.ts
@@ -4,6 +4,7 @@ import packageInfo from "../package.json"; // eslint-disable-line
 
 import { NODE_AUTH_SCHEME_PREFERENCE_OPTIONS, emitWarningIfUnsupportedVersion as awsCheckVersion } from "@aws-sdk/core";
 import { defaultProvider as credentialDefaultProvider } from "@aws-sdk/credential-provider-node";
+import { eventStreamPayloadHandlerProvider } from "@aws-sdk/eventstream-handler-node";
 import { NODE_APP_ID_CONFIG_OPTIONS, createDefaultUserAgentProvider } from "@aws-sdk/util-user-agent-node";
 import {
   NODE_REGION_CONFIG_FILE_OPTIONS,
@@ -11,6 +12,7 @@ import {
   NODE_USE_DUALSTACK_ENDPOINT_CONFIG_OPTIONS,
   NODE_USE_FIPS_ENDPOINT_CONFIG_OPTIONS,
 } from "@smithy/config-resolver";
+import { eventStreamSerdeProvider } from "@smithy/eventstream-serde-node";
 import { Hash } from "@smithy/hash-node";
 import { fileStreamHasher as streamHasher } from "@smithy/hash-stream-node";
 import {
@@ -55,6 +57,8 @@ export const getRuntimeConfig = (config: RestJsonProtocolClientConfig) => {
       createDefaultUserAgentProvider({ serviceId: clientSharedValues.serviceId, clientVersion: packageInfo.version }),
     disableRequestCompression:
       config?.disableRequestCompression ?? loadNodeConfig(NODE_DISABLE_REQUEST_COMPRESSION_CONFIG_OPTIONS, config),
+    eventStreamPayloadHandlerProvider: config?.eventStreamPayloadHandlerProvider ?? eventStreamPayloadHandlerProvider,
+    eventStreamSerdeProvider: config?.eventStreamSerdeProvider ?? eventStreamSerdeProvider,
     maxAttempts: config?.maxAttempts ?? loadNodeConfig(NODE_MAX_ATTEMPT_CONFIG_OPTIONS, config),
     md5: config?.md5 ?? Hash.bind(null, "md5"),
     region:
diff --git a/private/aws-protocoltests-restjson/test/functional/restjson1.spec.ts b/private/aws-protocoltests-restjson/test/functional/restjson1.spec.ts
index 49e2e78849f01..1cd35f81ce592 100644
--- a/private/aws-protocoltests-restjson/test/functional/restjson1.spec.ts
+++ b/private/aws-protocoltests-restjson/test/functional/restjson1.spec.ts
@@ -28,6 +28,7 @@ import { HttpPayloadWithStructureCommand } from "../../src/commands/HttpPayloadW
 import { HttpPayloadWithUnionCommand } from "../../src/commands/HttpPayloadWithUnionCommand";
 import { HttpPrefixHeadersCommand } from "../../src/commands/HttpPrefixHeadersCommand";
 import { HttpPrefixHeadersInResponseCommand } from "../../src/commands/HttpPrefixHeadersInResponseCommand";
+import { HttpQueryParamsOnlyOperationCommand } from "../../src/commands/HttpQueryParamsOnlyOperationCommand";
 import { HttpRequestWithFloatLabelsCommand } from "../../src/commands/HttpRequestWithFloatLabelsCommand";
 import { HttpRequestWithGreedyLabelInPathCommand } from "../../src/commands/HttpRequestWithGreedyLabelInPathCommand";
 import { HttpRequestWithLabelsAndTimestampFormatCommand } from "../../src/commands/HttpRequestWithLabelsAndTimestampFormatCommand";
@@ -3191,6 +3192,67 @@ it("HttpPrefixHeadersResponse:Response", async () => {
   });
 });
 
+/**
+ * Test that httpQueryParams are included in request when no other query parameters exist
+ */
+it("HttpQueryParamsOnlyRequest:Request", async () => {
+  const client = new RestJsonProtocolClient({
+    ...clientParams,
+    requestHandler: new RequestSerializationTestHandler(),
+  });
+
+  const command = new HttpQueryParamsOnlyOperationCommand({
+    queryMap: {
+      a: "b",
+      c: "d",
+    } as any,
+  } as any);
+  try {
+    await client.send(command);
+    fail("Expected an EXPECTED_REQUEST_SERIALIZATION_ERROR to be thrown");
+    return;
+  } catch (err) {
+    if (!(err instanceof EXPECTED_REQUEST_SERIALIZATION_ERROR)) {
+      fail(err);
+      return;
+    }
+    const r = err.request;
+    expect(r.method).toBe("GET");
+    expect(r.path).toBe("/http-query-params-only");
+
+    const queryString = buildQueryString(r.query);
+    expect(queryString).toContain("a=b");
+    expect(queryString).toContain("c=d");
+  }
+});
+
+/**
+ * Test that empty httpQueryParams map results in no query parameters
+ */
+it("HttpQueryParamsOnlyEmptyRequest:Request", async () => {
+  const client = new RestJsonProtocolClient({
+    ...clientParams,
+    requestHandler: new RequestSerializationTestHandler(),
+  });
+
+  const command = new HttpQueryParamsOnlyOperationCommand({
+    queryMap: {} as any,
+  } as any);
+  try {
+    await client.send(command);
+    fail("Expected an EXPECTED_REQUEST_SERIALIZATION_ERROR to be thrown");
+    return;
+  } catch (err) {
+    if (!(err instanceof EXPECTED_REQUEST_SERIALIZATION_ERROR)) {
+      fail(err);
+      return;
+    }
+    const r = err.request;
+    expect(r.method).toBe("GET");
+    expect(r.path).toBe("/http-query-params-only");
+  }
+});
+
 /**
  * Supports handling NaN float label values.
  */
diff --git a/private/aws-protocoltests-restxml-schema/README.md b/private/aws-protocoltests-restxml-schema/README.md
index 027ea898a421c..0a5ed752db09c 100644
--- a/private/aws-protocoltests-restxml-schema/README.md
+++ b/private/aws-protocoltests-restxml-schema/README.md
@@ -1018,6 +1018,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1162,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1242,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1650,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-protocoltests-restxml/README.md b/private/aws-protocoltests-restxml/README.md
index b0f4fe83c0704..b99cc7eff0aff 100644
--- a/private/aws-protocoltests-restxml/README.md
+++ b/private/aws-protocoltests-restxml/README.md
@@ -1018,6 +1018,30 @@ DocumentTypeAsPayload
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DocumentTypeAsPayloadCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DocumentTypeAsPayloadCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DocumentTypeAsPayloadCommandOutput/)
 
+</details>
+<details>
+<summary>
+DuplexStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DuplexStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithDistinctStreams
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DuplexStreamWithDistinctStreamsCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithDistinctStreamsCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithDistinctStreamsCommandOutput/)
+
+</details>
+<details>
+<summary>
+DuplexStreamWithInitialMessages
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/DuplexStreamWithInitialMessagesCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithInitialMessagesCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/DuplexStreamWithInitialMessagesCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1138,6 +1162,14 @@ HttpPrefixHeadersInResponse
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/HttpPrefixHeadersInResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpPrefixHeadersInResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpPrefixHeadersInResponseCommandOutput/)
 
+</details>
+<details>
+<summary>
+HttpQueryParamsOnlyOperation
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/HttpQueryParamsOnlyOperationCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpQueryParamsOnlyOperationCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/HttpQueryParamsOnlyOperationCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1210,6 +1242,22 @@ InputAndOutputWithHeaders
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/InputAndOutputWithHeadersCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputAndOutputWithHeadersCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputAndOutputWithHeadersCommandOutput/)
 
+</details>
+<details>
+<summary>
+InputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/InputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+InputStreamWithInitialRequest
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/InputStreamWithInitialRequestCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamWithInitialRequestCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/InputStreamWithInitialRequestCommandOutput/)
+
 </details>
 <details>
 <summary>
@@ -1602,6 +1650,22 @@ OperationWithNestedStructure
 
 [Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/OperationWithNestedStructureCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OperationWithNestedStructureCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OperationWithNestedStructureCommandOutput/)
 
+</details>
+<details>
+<summary>
+OutputStream
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/OutputStreamCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamCommandOutput/)
+
+</details>
+<details>
+<summary>
+OutputStreamWithInitialResponse
+</summary>
+
+[Command API Reference](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/client/rest-xml-protocol/command/OutputStreamWithInitialResponseCommand/) / [Input](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamWithInitialResponseCommandInput/) / [Output](https://docs.aws.amazon.com/AWSJavaScriptSDK/v3/latest/Package/-aws-sdk-client-rest-xml-protocol/Interface/OutputStreamWithInitialResponseCommandOutput/)
+
 </details>
 <details>
 <summary>
diff --git a/private/aws-restjson-server/package.json b/private/aws-restjson-server/package.json
index f3001dc4457bb..356c8c035df74 100644
--- a/private/aws-restjson-server/package.json
+++ b/private/aws-restjson-server/package.json
@@ -24,6 +24,7 @@
     "@aws-sdk/types": "*",
     "@aws-smithy/server-common": "1.0.0-alpha.10",
     "@smithy/config-resolver": "^4.4.3",
+    "@smithy/eventstream-codec": "^4.2.5",
     "@smithy/fetch-http-handler": "^5.3.6",
     "@smithy/hash-node": "^4.2.5",
     "@smithy/invalid-dependency": "^4.2.5",
diff --git a/private/aws-restjson-server/src/index.ts b/private/aws-restjson-server/src/index.ts
index 3cd32cba1eacc..f0fc8f018680a 100644
--- a/private/aws-restjson-server/src/index.ts
+++ b/private/aws-restjson-server/src/index.ts
@@ -1,10 +1,5 @@
 // smithy-typescript generated code
 /* eslint-disable */
-/**
- * A REST JSON service that sends JSON requests and responses.
- *
- * @packageDocumentation
- */
 export * as Aws_restJson1 from "./protocols/Aws_restJson1";
 export * from "./server/index";
 
diff --git a/private/aws-restjson-server/src/models/errors.ts b/private/aws-restjson-server/src/models/errors.ts
index 78ccedf7f5909..4eb3b21dcefa1 100644
--- a/private/aws-restjson-server/src/models/errors.ts
+++ b/private/aws-restjson-server/src/models/errors.ts
@@ -27,6 +27,38 @@ export class ComplexError extends __BaseException {
   }
 }
 
+/**
+ * @public
+ */
+export class ErrorEvent extends __BaseException {
+  readonly name = "ErrorEvent" as const;
+  readonly $fault = "client" as const;
+  constructor(opts: __ExceptionOptionType<ErrorEvent, __BaseException>) {
+    super({
+      name: "ErrorEvent",
+      $fault: "client",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, ErrorEvent.prototype);
+  }
+}
+
+/**
+ * @public
+ */
+export class ServiceUnavailableError extends __BaseException {
+  readonly name = "ServiceUnavailableError" as const;
+  readonly $fault = "server" as const;
+  constructor(opts: __ExceptionOptionType<ServiceUnavailableError, __BaseException>) {
+    super({
+      name: "ServiceUnavailableError",
+      $fault: "server",
+      ...opts,
+    });
+    Object.setPrototypeOf(this, ServiceUnavailableError.prototype);
+  }
+}
+
 /**
  * This error has test cases that test some of the dark corners of Amazon service
  * framework history. It should only be implemented by clients.
diff --git a/private/aws-restjson-server/src/models/models_0.ts b/private/aws-restjson-server/src/models/models_0.ts
index 047e82f602e1b..cc6c306a684b7 100644
--- a/private/aws-restjson-server/src/models/models_0.ts
+++ b/private/aws-restjson-server/src/models/models_0.ts
@@ -9,6 +9,7 @@ import {
   MultiConstraintValidator as __MultiConstraintValidator,
   NoOpValidator as __NoOpValidator,
   RequiredValidator as __RequiredValidator,
+  ServiceException as __BaseException,
   UniqueItemsValidator as __UniqueItemsValidator,
   ValidationFailure as __ValidationFailure,
 } from "@aws-smithy/server-common";
@@ -17,6 +18,7 @@ import { DocumentType as __DocumentType, StreamingBlobTypes } from "@smithy/type
 import { Readable } from "stream";
 
 import { FooEnum, IntegerEnum, StringEnum, TestEnum, TestIntEnum } from "./enums";
+import { ErrorEvent } from "./errors";
 
 /**
  * @public
@@ -264,6 +266,38 @@ export namespace AllQueryStringTypesInput {
   };
 }
 
+/**
+ * @public
+ */
+export interface BlobPayloadEvent {
+  payload?: Uint8Array | undefined;
+}
+
+export namespace BlobPayloadEvent {
+  const memberValidators: {
+    payload?: __MultiConstraintValidator<Uint8Array>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: BlobPayloadEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "payload": {
+            memberValidators["payload"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("payload").validate(obj.payload, `${path}/payload`)];
+  };
+}
+
 /**
  * @public
  */
@@ -768,33 +802,1000 @@ export interface Dialog {
   farewell?: Farewell | undefined;
 }
 
-export namespace Dialog {
+export namespace Dialog {
+  const memberValidators: {
+    language?: __MultiConstraintValidator<string>;
+    greeting?: __MultiConstraintValidator<string>;
+    farewell?: __MultiConstraintValidator<Farewell>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: Dialog, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "language": {
+            memberValidators["language"] = new __NoOpValidator();
+            break;
+          }
+          case "greeting": {
+            memberValidators["greeting"] = new __NoOpValidator();
+            break;
+          }
+          case "farewell": {
+            memberValidators["farewell"] = new __CompositeStructureValidator<Farewell>(
+              new __NoOpValidator(),
+              Farewell.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("language").validate(obj.language, `${path}/language`),
+      ...getMemberValidator("greeting").validate(obj.greeting, `${path}/greeting`),
+      ...getMemberValidator("farewell").validate(obj.farewell, `${path}/farewell`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface DocumentTypeInputOutput {
+  stringValue?: string | undefined;
+  documentValue?: __DocumentType | undefined;
+}
+
+export namespace DocumentTypeInputOutput {
+  const memberValidators: {
+    stringValue?: __MultiConstraintValidator<string>;
+    documentValue?: __MultiConstraintValidator<__DocumentType>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: DocumentTypeInputOutput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "stringValue": {
+            memberValidators["stringValue"] = new __NoOpValidator();
+            break;
+          }
+          case "documentValue": {
+            memberValidators["documentValue"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("stringValue").validate(obj.stringValue, `${path}/stringValue`),
+      ...getMemberValidator("documentValue").validate(obj.documentValue, `${path}/documentValue`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface DocumentTypeAsMapValueInputOutput {
+  docValuedMap?: Record<string, __DocumentType> | undefined;
+}
+
+export namespace DocumentTypeAsMapValueInputOutput {
+  const memberValidators: {
+    docValuedMap?: __MultiConstraintValidator<Record<string, __DocumentType>>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: DocumentTypeAsMapValueInputOutput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "docValuedMap": {
+            memberValidators["docValuedMap"] = new __CompositeMapValidator<__DocumentType>(
+              new __NoOpValidator(),
+              new __NoOpValidator(),
+              new __NoOpValidator()
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("docValuedMap").validate(obj.docValuedMap, `${path}/docValuedMap`)];
+  };
+}
+
+/**
+ * @public
+ */
+export interface DocumentTypeAsPayloadInputOutput {
+  documentValue?: __DocumentType | undefined;
+}
+
+export namespace DocumentTypeAsPayloadInputOutput {
+  const memberValidators: {
+    documentValue?: __MultiConstraintValidator<__DocumentType>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: DocumentTypeAsPayloadInputOutput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "documentValue": {
+            memberValidators["documentValue"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("documentValue").validate(obj.documentValue, `${path}/documentValue`)];
+  };
+}
+
+/**
+ * @public
+ */
+export interface HeadersEvent {
+  booleanHeader?: boolean | undefined;
+  byteHeader?: number | undefined;
+  shortHeader?: number | undefined;
+  intHeader?: number | undefined;
+  longHeader?: number | undefined;
+  blobHeader?: Uint8Array | undefined;
+  stringHeader?: string | undefined;
+  timestampHeader?: Date | undefined;
+}
+
+export namespace HeadersEvent {
+  const memberValidators: {
+    booleanHeader?: __MultiConstraintValidator<boolean>;
+    byteHeader?: __MultiConstraintValidator<number>;
+    shortHeader?: __MultiConstraintValidator<number>;
+    intHeader?: __MultiConstraintValidator<number>;
+    longHeader?: __MultiConstraintValidator<number>;
+    blobHeader?: __MultiConstraintValidator<Uint8Array>;
+    stringHeader?: __MultiConstraintValidator<string>;
+    timestampHeader?: __MultiConstraintValidator<Date>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: HeadersEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "booleanHeader": {
+            memberValidators["booleanHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "byteHeader": {
+            memberValidators["byteHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "shortHeader": {
+            memberValidators["shortHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "intHeader": {
+            memberValidators["intHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "longHeader": {
+            memberValidators["longHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "blobHeader": {
+            memberValidators["blobHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "stringHeader": {
+            memberValidators["stringHeader"] = new __NoOpValidator();
+            break;
+          }
+          case "timestampHeader": {
+            memberValidators["timestampHeader"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("booleanHeader").validate(obj.booleanHeader, `${path}/booleanHeader`),
+      ...getMemberValidator("byteHeader").validate(obj.byteHeader, `${path}/byteHeader`),
+      ...getMemberValidator("shortHeader").validate(obj.shortHeader, `${path}/shortHeader`),
+      ...getMemberValidator("intHeader").validate(obj.intHeader, `${path}/intHeader`),
+      ...getMemberValidator("longHeader").validate(obj.longHeader, `${path}/longHeader`),
+      ...getMemberValidator("blobHeader").validate(obj.blobHeader, `${path}/blobHeader`),
+      ...getMemberValidator("stringHeader").validate(obj.stringHeader, `${path}/stringHeader`),
+      ...getMemberValidator("timestampHeader").validate(obj.timestampHeader, `${path}/timestampHeader`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface PayloadStructure {
+  structureMember?: string | undefined;
+}
+
+export namespace PayloadStructure {
+  const memberValidators: {
+    structureMember?: __MultiConstraintValidator<string>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: PayloadStructure, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "structureMember": {
+            memberValidators["structureMember"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("structureMember").validate(obj.structureMember, `${path}/structureMember`)];
+  };
+}
+
+/**
+ * @public
+ */
+export interface HeadersAndExplicitPayloadEvent {
+  header?: string | undefined;
+  payload?: PayloadStructure | undefined;
+}
+
+export namespace HeadersAndExplicitPayloadEvent {
+  const memberValidators: {
+    header?: __MultiConstraintValidator<string>;
+    payload?: __MultiConstraintValidator<PayloadStructure>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: HeadersAndExplicitPayloadEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "header": {
+            memberValidators["header"] = new __NoOpValidator();
+            break;
+          }
+          case "payload": {
+            memberValidators["payload"] = new __CompositeStructureValidator<PayloadStructure>(
+              new __NoOpValidator(),
+              PayloadStructure.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("header").validate(obj.header, `${path}/header`),
+      ...getMemberValidator("payload").validate(obj.payload, `${path}/payload`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface HeadersAndImplicitPayloadEvent {
+  header?: string | undefined;
+  payload?: string | undefined;
+}
+
+export namespace HeadersAndImplicitPayloadEvent {
+  const memberValidators: {
+    header?: __MultiConstraintValidator<string>;
+    payload?: __MultiConstraintValidator<string>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: HeadersAndImplicitPayloadEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "header": {
+            memberValidators["header"] = new __NoOpValidator();
+            break;
+          }
+          case "payload": {
+            memberValidators["payload"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("header").validate(obj.header, `${path}/header`),
+      ...getMemberValidator("payload").validate(obj.payload, `${path}/payload`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface StringPayloadEvent {
+  payload?: string | undefined;
+}
+
+export namespace StringPayloadEvent {
+  const memberValidators: {
+    payload?: __MultiConstraintValidator<string>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: StringPayloadEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "payload": {
+            memberValidators["payload"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("payload").validate(obj.payload, `${path}/payload`)];
+  };
+}
+
+/**
+ * @public
+ */
+export interface StructurePayloadEvent {
+  payload?: PayloadStructure | undefined;
+}
+
+export namespace StructurePayloadEvent {
+  const memberValidators: {
+    payload?: __MultiConstraintValidator<PayloadStructure>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: StructurePayloadEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "payload": {
+            memberValidators["payload"] = new __CompositeStructureValidator<PayloadStructure>(
+              new __NoOpValidator(),
+              PayloadStructure.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("payload").validate(obj.payload, `${path}/payload`)];
+  };
+}
+
+/**
+ * @public
+ */
+export type PayloadUnion = PayloadUnion.UnionMemberMember | PayloadUnion.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace PayloadUnion {
+  export interface UnionMemberMember {
+    unionMember: string;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    unionMember?: never;
+    $unknown: [string, any];
+  }
+
+  export interface Visitor<T> {
+    unionMember: (value: string) => T;
+    _: (name: string, value: any) => T;
+  }
+
+  export const visit = <T>(value: PayloadUnion, visitor: Visitor<T>): T => {
+    if (value.unionMember !== undefined) return visitor.unionMember(value.unionMember);
+    return visitor._(value.$unknown[0], value.$unknown[1]);
+  };
+
+  const memberValidators: {
+    unionMember?: __MultiConstraintValidator<string>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: PayloadUnion, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "unionMember": {
+            memberValidators["unionMember"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("unionMember").validate(obj.unionMember, `${path}/unionMember`)];
+  };
+}
+
+/**
+ * @public
+ */
+export interface UnionPayloadEvent {
+  payload?: PayloadUnion | undefined;
+}
+
+export namespace UnionPayloadEvent {
+  const memberValidators: {
+    payload?: __MultiConstraintValidator<PayloadUnion>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: UnionPayloadEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "payload": {
+            memberValidators["payload"] = new __CompositeStructureValidator<PayloadUnion>(
+              new __NoOpValidator(),
+              PayloadUnion.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("payload").validate(obj.payload, `${path}/payload`)];
+  };
+}
+
+/**
+ * @public
+ */
+export type EventStream =
+  | EventStream.BlobPayloadMember
+  | EventStream.ErrorMember
+  | EventStream.HeadersMember
+  | EventStream.HeadersAndExplicitPayloadMember
+  | EventStream.HeadersAndImplicitPayloadMember
+  | EventStream.StringPayloadMember
+  | EventStream.StructurePayloadMember
+  | EventStream.UnionPayloadMember
+  | EventStream.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace EventStream {
+  export interface HeadersMember {
+    headers: HeadersEvent;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface BlobPayloadMember {
+    headers?: never;
+    blobPayload: BlobPayloadEvent;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface StringPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload: StringPayloadEvent;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface StructurePayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload: StructurePayloadEvent;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface UnionPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload: UnionPayloadEvent;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface HeadersAndExplicitPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload: HeadersAndExplicitPayloadEvent;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface HeadersAndImplicitPayloadMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload: HeadersAndImplicitPayloadEvent;
+    error?: never;
+    $unknown?: never;
+  }
+
+  export interface ErrorMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error: ErrorEvent;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    headers?: never;
+    blobPayload?: never;
+    stringPayload?: never;
+    structurePayload?: never;
+    unionPayload?: never;
+    headersAndExplicitPayload?: never;
+    headersAndImplicitPayload?: never;
+    error?: never;
+    $unknown: [string, any];
+  }
+
+  export interface Visitor<T> {
+    headers: (value: HeadersEvent) => T;
+    blobPayload: (value: BlobPayloadEvent) => T;
+    stringPayload: (value: StringPayloadEvent) => T;
+    structurePayload: (value: StructurePayloadEvent) => T;
+    unionPayload: (value: UnionPayloadEvent) => T;
+    headersAndExplicitPayload: (value: HeadersAndExplicitPayloadEvent) => T;
+    headersAndImplicitPayload: (value: HeadersAndImplicitPayloadEvent) => T;
+    error: (value: ErrorEvent) => T;
+    _: (name: string, value: any) => T;
+  }
+
+  export const visit = <T>(value: EventStream, visitor: Visitor<T>): T => {
+    if (value.headers !== undefined) return visitor.headers(value.headers);
+    if (value.blobPayload !== undefined) return visitor.blobPayload(value.blobPayload);
+    if (value.stringPayload !== undefined) return visitor.stringPayload(value.stringPayload);
+    if (value.structurePayload !== undefined) return visitor.structurePayload(value.structurePayload);
+    if (value.unionPayload !== undefined) return visitor.unionPayload(value.unionPayload);
+    if (value.headersAndExplicitPayload !== undefined)
+      return visitor.headersAndExplicitPayload(value.headersAndExplicitPayload);
+    if (value.headersAndImplicitPayload !== undefined)
+      return visitor.headersAndImplicitPayload(value.headersAndImplicitPayload);
+    if (value.error !== undefined) return visitor.error(value.error);
+    return visitor._(value.$unknown[0], value.$unknown[1]);
+  };
+
+  const memberValidators: {
+    headers?: __MultiConstraintValidator<HeadersEvent>;
+    blobPayload?: __MultiConstraintValidator<BlobPayloadEvent>;
+    stringPayload?: __MultiConstraintValidator<StringPayloadEvent>;
+    structurePayload?: __MultiConstraintValidator<StructurePayloadEvent>;
+    unionPayload?: __MultiConstraintValidator<UnionPayloadEvent>;
+    headersAndExplicitPayload?: __MultiConstraintValidator<HeadersAndExplicitPayloadEvent>;
+    headersAndImplicitPayload?: __MultiConstraintValidator<HeadersAndImplicitPayloadEvent>;
+    error?: __MultiConstraintValidator<ErrorEvent>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: EventStream, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "headers": {
+            memberValidators["headers"] = new __CompositeStructureValidator<HeadersEvent>(
+              new __NoOpValidator(),
+              HeadersEvent.validate
+            );
+            break;
+          }
+          case "blobPayload": {
+            memberValidators["blobPayload"] = new __CompositeStructureValidator<BlobPayloadEvent>(
+              new __NoOpValidator(),
+              BlobPayloadEvent.validate
+            );
+            break;
+          }
+          case "stringPayload": {
+            memberValidators["stringPayload"] = new __CompositeStructureValidator<StringPayloadEvent>(
+              new __NoOpValidator(),
+              StringPayloadEvent.validate
+            );
+            break;
+          }
+          case "structurePayload": {
+            memberValidators["structurePayload"] = new __CompositeStructureValidator<StructurePayloadEvent>(
+              new __NoOpValidator(),
+              StructurePayloadEvent.validate
+            );
+            break;
+          }
+          case "unionPayload": {
+            memberValidators["unionPayload"] = new __CompositeStructureValidator<UnionPayloadEvent>(
+              new __NoOpValidator(),
+              UnionPayloadEvent.validate
+            );
+            break;
+          }
+          case "headersAndExplicitPayload": {
+            memberValidators["headersAndExplicitPayload"] =
+              new __CompositeStructureValidator<HeadersAndExplicitPayloadEvent>(
+                new __NoOpValidator(),
+                HeadersAndExplicitPayloadEvent.validate
+              );
+            break;
+          }
+          case "headersAndImplicitPayload": {
+            memberValidators["headersAndImplicitPayload"] =
+              new __CompositeStructureValidator<HeadersAndImplicitPayloadEvent>(
+                new __NoOpValidator(),
+                HeadersAndImplicitPayloadEvent.validate
+              );
+            break;
+          }
+          case "error": {
+            memberValidators["error"] = new __CompositeStructureValidator<ErrorEvent>(new __NoOpValidator(), () => [
+              /*Error validator unsupported*/
+            ]);
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("headers").validate(obj.headers, `${path}/headers`),
+      ...getMemberValidator("blobPayload").validate(obj.blobPayload, `${path}/blobPayload`),
+      ...getMemberValidator("stringPayload").validate(obj.stringPayload, `${path}/stringPayload`),
+      ...getMemberValidator("structurePayload").validate(obj.structurePayload, `${path}/structurePayload`),
+      ...getMemberValidator("unionPayload").validate(obj.unionPayload, `${path}/unionPayload`),
+      ...getMemberValidator("headersAndExplicitPayload").validate(
+        obj.headersAndExplicitPayload,
+        `${path}/headersAndExplicitPayload`
+      ),
+      ...getMemberValidator("headersAndImplicitPayload").validate(
+        obj.headersAndImplicitPayload,
+        `${path}/headersAndImplicitPayload`
+      ),
+      ...getMemberValidator("error").validate(obj.error, `${path}/error`),
+    ];
+  };
+}
+/**
+ * @internal
+ */
+export const EventStreamFilterSensitiveLog = (obj: EventStream): any => {
+  if (obj.headers !== undefined) return { headers: obj.headers };
+  if (obj.blobPayload !== undefined) return { blobPayload: obj.blobPayload };
+  if (obj.stringPayload !== undefined) return { stringPayload: obj.stringPayload };
+  if (obj.structurePayload !== undefined) return { structurePayload: obj.structurePayload };
+  if (obj.unionPayload !== undefined) return { unionPayload: obj.unionPayload };
+  if (obj.headersAndExplicitPayload !== undefined) return { headersAndExplicitPayload: obj.headersAndExplicitPayload };
+  if (obj.headersAndImplicitPayload !== undefined) return { headersAndImplicitPayload: obj.headersAndImplicitPayload };
+  if (obj.error !== undefined) return { error: obj.error };
+  if (obj.$unknown !== undefined) return { [obj.$unknown[0]]: "UNKNOWN" };
+};
+
+/**
+ * @public
+ */
+export interface DuplexStreamInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamInputFilterSensitiveLog = (obj: DuplexStreamInput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace DuplexStreamInput {
+  const memberValidators: {
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: DuplexStreamInput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamOutput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamOutputFilterSensitiveLog = (obj: DuplexStreamOutput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace DuplexStreamOutput {
+  const memberValidators: {
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: DuplexStreamOutput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface DuplexStreamWithDistinctStreamsInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const DuplexStreamWithDistinctStreamsInputFilterSensitiveLog = (
+  obj: DuplexStreamWithDistinctStreamsInput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace DuplexStreamWithDistinctStreamsInput {
+  const memberValidators: {
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: DuplexStreamWithDistinctStreamsInput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface SingletonEvent {
+  value?: string | undefined;
+}
+
+export namespace SingletonEvent {
+  const memberValidators: {
+    value?: __MultiConstraintValidator<string>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: SingletonEvent, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "value": {
+            memberValidators["value"] = new __NoOpValidator();
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("value").validate(obj.value, `${path}/value`)];
+  };
+}
+
+/**
+ * @public
+ */
+export type SingletonEventStream = SingletonEventStream.SingletonMember | SingletonEventStream.$UnknownMember;
+
+/**
+ * @public
+ */
+export namespace SingletonEventStream {
+  export interface SingletonMember {
+    singleton: SingletonEvent;
+    $unknown?: never;
+  }
+
+  /**
+   * @public
+   */
+  export interface $UnknownMember {
+    singleton?: never;
+    $unknown: [string, any];
+  }
+
+  export interface Visitor<T> {
+    singleton: (value: SingletonEvent) => T;
+    _: (name: string, value: any) => T;
+  }
+
+  export const visit = <T>(value: SingletonEventStream, visitor: Visitor<T>): T => {
+    if (value.singleton !== undefined) return visitor.singleton(value.singleton);
+    return visitor._(value.$unknown[0], value.$unknown[1]);
+  };
+
   const memberValidators: {
-    language?: __MultiConstraintValidator<string>;
-    greeting?: __MultiConstraintValidator<string>;
-    farewell?: __MultiConstraintValidator<Farewell>;
+    singleton?: __MultiConstraintValidator<SingletonEvent>;
   } = {};
   /**
    * @internal
    */
-  export const validate = (obj: Dialog, path = ""): __ValidationFailure[] => {
+  export const validate = (obj: SingletonEventStream, path = ""): __ValidationFailure[] => {
     function getMemberValidator<T extends keyof typeof memberValidators>(
       member: T
     ): NonNullable<(typeof memberValidators)[T]> {
       if (memberValidators[member] === undefined) {
         switch (member) {
-          case "language": {
-            memberValidators["language"] = new __NoOpValidator();
-            break;
-          }
-          case "greeting": {
-            memberValidators["greeting"] = new __NoOpValidator();
-            break;
-          }
-          case "farewell": {
-            memberValidators["farewell"] = new __CompositeStructureValidator<Farewell>(
+          case "singleton": {
+            memberValidators["singleton"] = new __CompositeStructureValidator<SingletonEvent>(
               new __NoOpValidator(),
-              Farewell.validate
+              SingletonEvent.validate
             );
             break;
           }
@@ -802,80 +1803,84 @@ export namespace Dialog {
       }
       return memberValidators[member]!;
     }
-    return [
-      ...getMemberValidator("language").validate(obj.language, `${path}/language`),
-      ...getMemberValidator("greeting").validate(obj.greeting, `${path}/greeting`),
-      ...getMemberValidator("farewell").validate(obj.farewell, `${path}/farewell`),
-    ];
+    return [...getMemberValidator("singleton").validate(obj.singleton, `${path}/singleton`)];
   };
 }
 
 /**
  * @public
  */
-export interface DocumentTypeInputOutput {
-  stringValue?: string | undefined;
-  documentValue?: __DocumentType | undefined;
+export interface DuplexStreamWithDistinctStreamsOutput {
+  stream?: SingletonEventStream | undefined;
 }
 
-export namespace DocumentTypeInputOutput {
+export namespace DuplexStreamWithDistinctStreamsOutput {
   const memberValidators: {
-    stringValue?: __MultiConstraintValidator<string>;
-    documentValue?: __MultiConstraintValidator<__DocumentType>;
+    stream?: __MultiConstraintValidator<SingletonEventStream>;
   } = {};
   /**
    * @internal
    */
-  export const validate = (obj: DocumentTypeInputOutput, path = ""): __ValidationFailure[] => {
+  export const validate = (obj: DuplexStreamWithDistinctStreamsOutput, path = ""): __ValidationFailure[] => {
     function getMemberValidator<T extends keyof typeof memberValidators>(
       member: T
     ): NonNullable<(typeof memberValidators)[T]> {
       if (memberValidators[member] === undefined) {
         switch (member) {
-          case "stringValue": {
-            memberValidators["stringValue"] = new __NoOpValidator();
-            break;
-          }
-          case "documentValue": {
-            memberValidators["documentValue"] = new __NoOpValidator();
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<SingletonEventStream>(
+              new __NoOpValidator(),
+              SingletonEventStream.validate
+            );
             break;
           }
         }
       }
       return memberValidators[member]!;
     }
-    return [
-      ...getMemberValidator("stringValue").validate(obj.stringValue, `${path}/stringValue`),
-      ...getMemberValidator("documentValue").validate(obj.documentValue, `${path}/documentValue`),
-    ];
+    return [...getMemberValidator("stream").validate(obj.stream, `${path}/stream`)];
   };
 }
 
 /**
  * @public
  */
-export interface DocumentTypeAsMapValueInputOutput {
-  docValuedMap?: Record<string, __DocumentType> | undefined;
+export interface DuplexStreamWithInitialMessagesInput {
+  initialRequestMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
 }
 
-export namespace DocumentTypeAsMapValueInputOutput {
+/**
+ * @internal
+ */
+export const DuplexStreamWithInitialMessagesInputFilterSensitiveLog = (
+  obj: DuplexStreamWithInitialMessagesInput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace DuplexStreamWithInitialMessagesInput {
   const memberValidators: {
-    docValuedMap?: __MultiConstraintValidator<Record<string, __DocumentType>>;
+    initialRequestMember?: __MultiConstraintValidator<string>;
+    stream?: __MultiConstraintValidator<EventStream>;
   } = {};
   /**
    * @internal
    */
-  export const validate = (obj: DocumentTypeAsMapValueInputOutput, path = ""): __ValidationFailure[] => {
+  export const validate = (obj: DuplexStreamWithInitialMessagesInput, path = ""): __ValidationFailure[] => {
     function getMemberValidator<T extends keyof typeof memberValidators>(
       member: T
     ): NonNullable<(typeof memberValidators)[T]> {
       if (memberValidators[member] === undefined) {
         switch (member) {
-          case "docValuedMap": {
-            memberValidators["docValuedMap"] = new __CompositeMapValidator<__DocumentType>(
-              new __NoOpValidator(),
+          case "initialRequestMember": {
+            memberValidators["initialRequestMember"] = new __CompositeValidator<string>([new __RequiredValidator()]);
+            break;
+          }
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
               new __NoOpValidator(),
-              new __NoOpValidator()
+              EventStream.validate
             );
             break;
           }
@@ -883,39 +1888,68 @@ export namespace DocumentTypeAsMapValueInputOutput {
       }
       return memberValidators[member]!;
     }
-    return [...getMemberValidator("docValuedMap").validate(obj.docValuedMap, `${path}/docValuedMap`)];
+    return [
+      ...getMemberValidator("initialRequestMember").validate(obj.initialRequestMember, `${path}/initialRequestMember`),
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
   };
 }
 
 /**
  * @public
  */
-export interface DocumentTypeAsPayloadInputOutput {
-  documentValue?: __DocumentType | undefined;
+export interface DuplexStreamWithInitialMessagesOutput {
+  initialResponseMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
 }
 
-export namespace DocumentTypeAsPayloadInputOutput {
+/**
+ * @internal
+ */
+export const DuplexStreamWithInitialMessagesOutputFilterSensitiveLog = (
+  obj: DuplexStreamWithInitialMessagesOutput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace DuplexStreamWithInitialMessagesOutput {
   const memberValidators: {
-    documentValue?: __MultiConstraintValidator<__DocumentType>;
+    initialResponseMember?: __MultiConstraintValidator<string>;
+    stream?: __MultiConstraintValidator<EventStream>;
   } = {};
   /**
    * @internal
    */
-  export const validate = (obj: DocumentTypeAsPayloadInputOutput, path = ""): __ValidationFailure[] => {
+  export const validate = (obj: DuplexStreamWithInitialMessagesOutput, path = ""): __ValidationFailure[] => {
     function getMemberValidator<T extends keyof typeof memberValidators>(
       member: T
     ): NonNullable<(typeof memberValidators)[T]> {
       if (memberValidators[member] === undefined) {
         switch (member) {
-          case "documentValue": {
-            memberValidators["documentValue"] = new __NoOpValidator();
+          case "initialResponseMember": {
+            memberValidators["initialResponseMember"] = new __CompositeValidator<string>([new __RequiredValidator()]);
+            break;
+          }
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
             break;
           }
         }
       }
       return memberValidators[member]!;
     }
-    return [...getMemberValidator("documentValue").validate(obj.documentValue, `${path}/documentValue`)];
+    return [
+      ...getMemberValidator("initialResponseMember").validate(
+        obj.initialResponseMember,
+        `${path}/initialResponseMember`
+      ),
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
   };
 }
 
@@ -1618,6 +2652,42 @@ export namespace HttpPrefixHeadersInResponseOutput {
   };
 }
 
+/**
+ * @public
+ */
+export interface HttpQueryParamsOnlyInput {
+  queryMap?: Record<string, string> | undefined;
+}
+
+export namespace HttpQueryParamsOnlyInput {
+  const memberValidators: {
+    queryMap?: __MultiConstraintValidator<Record<string, string>>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: HttpQueryParamsOnlyInput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "queryMap": {
+            memberValidators["queryMap"] = new __CompositeMapValidator<string>(
+              new __NoOpValidator(),
+              new __NoOpValidator(),
+              new __NoOpValidator()
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [...getMemberValidator("queryMap").validate(obj.queryMap, `${path}/queryMap`)];
+  };
+}
+
 /**
  * @public
  */
@@ -2179,6 +3249,103 @@ export namespace InputAndOutputWithHeadersIO {
   };
 }
 
+/**
+ * @public
+ */
+export interface InputStreamInput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const InputStreamInputFilterSensitiveLog = (obj: InputStreamInput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace InputStreamInput {
+  const memberValidators: {
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: InputStreamInput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface InputStreamWithInitialRequestInput {
+  initialRequestMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const InputStreamWithInitialRequestInputFilterSensitiveLog = (obj: InputStreamWithInitialRequestInput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace InputStreamWithInitialRequestInput {
+  const memberValidators: {
+    initialRequestMember?: __MultiConstraintValidator<string>;
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: InputStreamWithInitialRequestInput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "initialRequestMember": {
+            memberValidators["initialRequestMember"] = new __CompositeValidator<string>([new __RequiredValidator()]);
+            break;
+          }
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("initialRequestMember").validate(obj.initialRequestMember, `${path}/initialRequestMember`),
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
 /**
  * @public
  */
@@ -5038,6 +6205,108 @@ export namespace OperationWithNestedStructureOutput {
   };
 }
 
+/**
+ * @public
+ */
+export interface OutputStreamOutput {
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const OutputStreamOutputFilterSensitiveLog = (obj: OutputStreamOutput): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace OutputStreamOutput {
+  const memberValidators: {
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: OutputStreamOutput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
+/**
+ * @public
+ */
+export interface OutputStreamWithInitialResponseOutput {
+  initialResponseMember: string | undefined;
+  stream?: AsyncIterable<EventStream> | undefined;
+}
+
+/**
+ * @internal
+ */
+export const OutputStreamWithInitialResponseOutputFilterSensitiveLog = (
+  obj: OutputStreamWithInitialResponseOutput
+): any => ({
+  ...obj,
+  ...(obj.stream && { stream: "STREAMING_CONTENT" }),
+});
+export namespace OutputStreamWithInitialResponseOutput {
+  const memberValidators: {
+    initialResponseMember?: __MultiConstraintValidator<string>;
+    stream?: __MultiConstraintValidator<EventStream>;
+  } = {};
+  /**
+   * @internal
+   */
+  export const validate = (obj: OutputStreamWithInitialResponseOutput, path = ""): __ValidationFailure[] => {
+    function getMemberValidator<T extends keyof typeof memberValidators>(
+      member: T
+    ): NonNullable<(typeof memberValidators)[T]> {
+      if (memberValidators[member] === undefined) {
+        switch (member) {
+          case "initialResponseMember": {
+            memberValidators["initialResponseMember"] = new __CompositeValidator<string>([new __RequiredValidator()]);
+            break;
+          }
+          case "stream": {
+            memberValidators["stream"] = new __CompositeStructureValidator<EventStream>(
+              new __NoOpValidator(),
+              EventStream.validate
+            );
+            break;
+          }
+        }
+      }
+      return memberValidators[member]!;
+    }
+    return [
+      ...getMemberValidator("initialResponseMember").validate(
+        obj.initialResponseMember,
+        `${path}/initialResponseMember`
+      ),
+      // unsupported event stream validation
+      // ...getMemberValidator("stream").validate(obj.stream, `${path}/stream`),
+    ];
+  };
+}
+
 /**
  * @public
  */
diff --git a/private/aws-restjson-server/src/protocols/Aws_restJson1.ts b/private/aws-restjson-server/src/protocols/Aws_restJson1.ts
index 7fd328b36b04e..0887ac0c690c3 100644
--- a/private/aws-restjson-server/src/protocols/Aws_restJson1.ts
+++ b/private/aws-restjson-server/src/protocols/Aws_restJson1.ts
@@ -14,11 +14,13 @@ import {
   SmithyFrameworkException as __SmithyFrameworkException,
   UnsupportedMediaTypeException as __UnsupportedMediaTypeException,
 } from "@aws-smithy/server-common";
+import { Int64 as __Int64 } from "@smithy/eventstream-codec";
 import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
 import {
   _json,
   collectBody,
   dateToUtcString as __dateToUtcString,
+  decorateServiceException as __decorateServiceException,
   expectBoolean as __expectBoolean,
   expectByte as __expectByte,
   expectInt32 as __expectInt32,
@@ -53,32 +55,47 @@ import {
 import {
   DocumentType as __DocumentType,
   Endpoint as __Endpoint,
+  EventStreamSerdeContext as __EventStreamSerdeContext,
+  Message as __Message,
+  MessageHeaders as __MessageHeaders,
   ResponseMetadata as __ResponseMetadata,
   SerdeContext as __SerdeContext,
 } from "@smithy/types";
 import { calculateBodyLength } from "@smithy/util-body-length-node";
 
 import { FooEnum, IntegerEnum } from "../models/enums";
-import { ComplexError, FooError, InvalidGreeting } from "../models/errors";
+import { ComplexError, ErrorEvent, FooError, InvalidGreeting, ServiceUnavailableError } from "../models/errors";
 import {
+  BlobPayloadEvent,
   ClientOptionalDefaults,
   ComplexNestedErrorData,
   Defaults,
   Dialog,
+  EventStream,
   Farewell,
   GreetingStruct,
+  HeadersAndExplicitPayloadEvent,
+  HeadersAndImplicitPayloadEvent,
+  HeadersEvent,
   MyUnion,
   NestedPayload,
   PayloadConfig,
+  PayloadStructure,
+  PayloadUnion,
   PlayerAction,
   RecursiveShapesInputOutputNested1,
   RecursiveShapesInputOutputNested2,
   RenamedGreeting,
   SimpleUnion,
+  SingletonEvent,
+  SingletonEventStream,
+  StringPayloadEvent,
   StructureListMember,
+  StructurePayloadEvent,
   TestConfig,
   TopLevel,
   UnionPayload,
+  UnionPayloadEvent,
   UnionWithJsonName,
   Unit,
 } from "../models/models_0";
@@ -108,6 +125,15 @@ import {
   DocumentTypeAsPayloadServerInput,
   DocumentTypeAsPayloadServerOutput,
 } from "../server/operations/DocumentTypeAsPayload";
+import { DuplexStreamServerInput, DuplexStreamServerOutput } from "../server/operations/DuplexStream";
+import {
+  DuplexStreamWithDistinctStreamsServerInput,
+  DuplexStreamWithDistinctStreamsServerOutput,
+} from "../server/operations/DuplexStreamWithDistinctStreams";
+import {
+  DuplexStreamWithInitialMessagesServerInput,
+  DuplexStreamWithInitialMessagesServerOutput,
+} from "../server/operations/DuplexStreamWithInitialMessages";
 import {
   EmptyInputAndEmptyOutputServerInput,
   EmptyInputAndEmptyOutputServerOutput,
@@ -150,6 +176,10 @@ import {
   HttpPrefixHeadersInResponseServerInput,
   HttpPrefixHeadersInResponseServerOutput,
 } from "../server/operations/HttpPrefixHeadersInResponse";
+import {
+  HttpQueryParamsOnlyOperationServerInput,
+  HttpQueryParamsOnlyOperationServerOutput,
+} from "../server/operations/HttpQueryParamsOnlyOperation";
 import {
   HttpRequestWithFloatLabelsServerInput,
   HttpRequestWithFloatLabelsServerOutput,
@@ -180,6 +210,11 @@ import {
   InputAndOutputWithHeadersServerInput,
   InputAndOutputWithHeadersServerOutput,
 } from "../server/operations/InputAndOutputWithHeaders";
+import { InputStreamServerInput, InputStreamServerOutput } from "../server/operations/InputStream";
+import {
+  InputStreamWithInitialRequestServerInput,
+  InputStreamWithInitialRequestServerOutput,
+} from "../server/operations/InputStreamWithInitialRequest";
 import { JsonBlobsServerInput, JsonBlobsServerOutput } from "../server/operations/JsonBlobs";
 import { JsonEnumsServerInput, JsonEnumsServerOutput } from "../server/operations/JsonEnums";
 import { JsonIntEnumsServerInput, JsonIntEnumsServerOutput } from "../server/operations/JsonIntEnums";
@@ -310,6 +345,11 @@ import {
   OperationWithNestedStructureServerInput,
   OperationWithNestedStructureServerOutput,
 } from "../server/operations/OperationWithNestedStructure";
+import { OutputStreamServerInput, OutputStreamServerOutput } from "../server/operations/OutputStream";
+import {
+  OutputStreamWithInitialResponseServerInput,
+  OutputStreamWithInitialResponseServerOutput,
+} from "../server/operations/OutputStreamWithInitialResponse";
 import { PostPlayerActionServerInput, PostPlayerActionServerOutput } from "../server/operations/PostPlayerAction";
 import {
   PostUnionWithJsonNameServerInput,
@@ -830,6 +870,86 @@ export const deserializeDocumentTypeAsPayloadRequest = async (
   return contents;
 };
 
+export const deserializeDuplexStreamRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<DuplexStreamServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined && contentType !== "application/json") {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({});
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
+export const deserializeDuplexStreamWithDistinctStreamsRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<DuplexStreamWithDistinctStreamsServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined && contentType !== "application/json") {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({});
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
+export const deserializeDuplexStreamWithInitialMessagesRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<DuplexStreamWithInitialMessagesServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined && contentType !== "application/json") {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({
+    [_iRM]: [, output.headers[_irm]],
+  });
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
 export const deserializeEmptyInputAndEmptyOutputRequest = async (
   output: __HttpRequest,
   context: __SerdeContext
@@ -1235,6 +1355,49 @@ export const deserializeHttpPrefixHeadersInResponseRequest = async (
   return contents;
 };
 
+export const deserializeHttpQueryParamsOnlyOperationRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext
+): Promise<HttpQueryParamsOnlyOperationServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined && contentType !== "application/json") {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({});
+  const query = output.query;
+  if (query != null) {
+    const parsedQuery: Record<string, string> = {};
+    for (const [key, value] of Object.entries(query)) {
+      let queryValue: string;
+      if (Array.isArray(value)) {
+        if (value.length === 1) {
+          queryValue = value[0];
+        } else {
+          throw new __SerializationException();
+        }
+      } else {
+        queryValue = value as string;
+      }
+      parsedQuery[key] = queryValue;
+    }
+    contents.queryMap = parsedQuery;
+  }
+  await collectBody(output.body, context);
+  return contents;
+};
+
 export const deserializeHttpRequestWithFloatLabelsRequest = async (
   output: __HttpRequest,
   context: __SerdeContext
@@ -1562,6 +1725,60 @@ export const deserializeInputAndOutputWithHeadersRequest = async (
   return contents;
 };
 
+export const deserializeInputStreamRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<InputStreamServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined && contentType !== "application/json") {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({});
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
+export const deserializeInputStreamWithInitialRequestRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext & __EventStreamSerdeContext
+): Promise<InputStreamWithInitialRequestServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined && contentType !== "application/json") {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({
+    [_iRM]: [, output.headers[_irm]],
+  });
+  const data: any = output.body;
+  contents.stream = de_EventStream(data, context);
+  return contents;
+};
+
 export const deserializeJsonBlobsRequest = async (
   output: __HttpRequest,
   context: __SerdeContext
@@ -3251,6 +3468,56 @@ export const deserializeOperationWithNestedStructureRequest = async (
   return contents;
 };
 
+export const deserializeOutputStreamRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext
+): Promise<OutputStreamServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined) {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({});
+  await collectBody(output.body, context);
+  return contents;
+};
+
+export const deserializeOutputStreamWithInitialResponseRequest = async (
+  output: __HttpRequest,
+  context: __SerdeContext
+): Promise<OutputStreamWithInitialResponseServerInput> => {
+  const contentTypeHeaderKey: string | undefined = Object.keys(output.headers).find(
+    (key) => key.toLowerCase() === "content-type"
+  );
+  if (contentTypeHeaderKey != null) {
+    const contentType = output.headers[contentTypeHeaderKey];
+    if (contentType !== undefined) {
+      throw new __UnsupportedMediaTypeException();
+    }
+  }
+  const acceptHeaderKey: string | undefined = Object.keys(output.headers).find((key) => key.toLowerCase() === "accept");
+  if (acceptHeaderKey != null) {
+    const accept = output.headers[acceptHeaderKey];
+    if (!__acceptMatches(accept, "application/json")) {
+      throw new __NotAcceptableException();
+    }
+  }
+  const contents: any = map({});
+  await collectBody(output.body, context);
+  return contents;
+};
+
 export const deserializePostPlayerActionRequest = async (
   output: __HttpRequest,
   context: __SerdeContext
@@ -4277,11 +4544,11 @@ export const serializeDocumentTypeAsPayloadResponse = async (
   });
 };
 
-export const serializeEmptyInputAndEmptyOutputResponse = async (
-  input: EmptyInputAndEmptyOutputServerOutput,
+export const serializeDuplexStreamResponse = async (
+  input: DuplexStreamServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
-  const context: __SerdeContext = {
+  const context: __SerdeContext & any /*event stream context unsupported in ssdk*/ = {
     ...ctx,
     endpoint: () =>
       Promise.resolve({
@@ -4295,7 +4562,9 @@ export const serializeEmptyInputAndEmptyOutputResponse = async (
     "content-type": "application/json",
   });
   let body: any;
-  body = "{}";
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
   if (
     body &&
     Object.keys(headers)
@@ -4314,8 +4583,8 @@ export const serializeEmptyInputAndEmptyOutputResponse = async (
   });
 };
 
-export const serializeEndpointOperationResponse = async (
-  input: EndpointOperationServerOutput,
+export const serializeDuplexStreamWithDistinctStreamsResponse = async (
+  input: DuplexStreamWithDistinctStreamsServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -4328,8 +4597,17 @@ export const serializeEndpointOperationResponse = async (
       }),
   };
   const statusCode = 200;
-  let headers: any = map({}, isSerializableHeaderValue, {});
+  let headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+  });
   let body: any;
+  if (input.stream !== undefined) {
+    body = se_SingletonEventStream(input.stream, context);
+  }
+  if (body === undefined) {
+    body = {};
+  }
+  body = JSON.stringify(body);
   if (
     body &&
     Object.keys(headers)
@@ -4348,11 +4626,11 @@ export const serializeEndpointOperationResponse = async (
   });
 };
 
-export const serializeEndpointWithHostLabelOperationResponse = async (
-  input: EndpointWithHostLabelOperationServerOutput,
+export const serializeDuplexStreamWithInitialMessagesResponse = async (
+  input: DuplexStreamWithInitialMessagesServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
-  const context: __SerdeContext = {
+  const context: __SerdeContext & any /*event stream context unsupported in ssdk*/ = {
     ...ctx,
     endpoint: () =>
       Promise.resolve({
@@ -4362,8 +4640,14 @@ export const serializeEndpointWithHostLabelOperationResponse = async (
       }),
   };
   const statusCode = 200;
-  let headers: any = map({}, isSerializableHeaderValue, {});
+  let headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+    [_irm_]: input[_iRMn]!,
+  });
   let body: any;
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
   if (
     body &&
     Object.keys(headers)
@@ -4382,8 +4666,8 @@ export const serializeEndpointWithHostLabelOperationResponse = async (
   });
 };
 
-export const serializeFractionalSecondsResponse = async (
-  input: FractionalSecondsServerOutput,
+export const serializeEmptyInputAndEmptyOutputResponse = async (
+  input: EmptyInputAndEmptyOutputServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -4400,11 +4684,7 @@ export const serializeFractionalSecondsResponse = async (
     "content-type": "application/json",
   });
   let body: any;
-  body = JSON.stringify(
-    take(input, {
-      datetime: (_) => __serializeDateTime(_),
-    })
-  );
+  body = "{}";
   if (
     body &&
     Object.keys(headers)
@@ -4423,8 +4703,8 @@ export const serializeFractionalSecondsResponse = async (
   });
 };
 
-export const serializeGreetingWithErrorsResponse = async (
-  input: GreetingWithErrorsServerOutput,
+export const serializeEndpointOperationResponse = async (
+  input: EndpointOperationServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -4437,12 +4717,8 @@ export const serializeGreetingWithErrorsResponse = async (
       }),
   };
   const statusCode = 200;
-  let headers: any = map({}, isSerializableHeaderValue, {
-    "content-type": "application/json",
-    [_xg]: input[_g]!,
-  });
+  let headers: any = map({}, isSerializableHeaderValue, {});
   let body: any;
-  body = "{}";
   if (
     body &&
     Object.keys(headers)
@@ -4461,8 +4737,8 @@ export const serializeGreetingWithErrorsResponse = async (
   });
 };
 
-export const serializeHostWithPathOperationResponse = async (
-  input: HostWithPathOperationServerOutput,
+export const serializeEndpointWithHostLabelOperationResponse = async (
+  input: EndpointWithHostLabelOperationServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -4495,8 +4771,8 @@ export const serializeHostWithPathOperationResponse = async (
   });
 };
 
-export const serializeHttpChecksumRequiredResponse = async (
-  input: HttpChecksumRequiredServerOutput,
+export const serializeFractionalSecondsResponse = async (
+  input: FractionalSecondsServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -4515,7 +4791,120 @@ export const serializeHttpChecksumRequiredResponse = async (
   let body: any;
   body = JSON.stringify(
     take(input, {
-      foo: [],
+      datetime: (_) => __serializeDateTime(_),
+    })
+  );
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+export const serializeGreetingWithErrorsResponse = async (
+  input: GreetingWithErrorsServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+    [_xg]: input[_g]!,
+  });
+  let body: any;
+  body = "{}";
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+export const serializeHostWithPathOperationResponse = async (
+  input: HostWithPathOperationServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {});
+  let body: any;
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+export const serializeHttpChecksumRequiredResponse = async (
+  input: HttpChecksumRequiredServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+  });
+  let body: any;
+  body = JSON.stringify(
+    take(input, {
+      foo: [],
     })
   );
   if (
@@ -4869,6 +5258,40 @@ export const serializeHttpPrefixHeadersInResponseResponse = async (
   });
 };
 
+export const serializeHttpQueryParamsOnlyOperationResponse = async (
+  input: HttpQueryParamsOnlyOperationServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {});
+  let body: any;
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
 export const serializeHttpRequestWithFloatLabelsResponse = async (
   input: HttpRequestWithFloatLabelsServerOutput,
   ctx: ServerSerdeContext
@@ -5232,6 +5655,74 @@ export const serializeInputAndOutputWithHeadersResponse = async (
   });
 };
 
+export const serializeInputStreamResponse = async (
+  input: InputStreamServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {});
+  let body: any;
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+export const serializeInputStreamWithInitialRequestResponse = async (
+  input: InputStreamWithInitialRequestServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {});
+  let body: any;
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
 export const serializeJsonBlobsResponse = async (
   input: JsonBlobsServerOutput,
   ctx: ServerSerdeContext
@@ -7057,11 +7548,11 @@ export const serializeOperationWithNestedStructureResponse = async (
   });
 };
 
-export const serializePostPlayerActionResponse = async (
-  input: PostPlayerActionServerOutput,
+export const serializeOutputStreamResponse = async (
+  input: OutputStreamServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
-  const context: __SerdeContext = {
+  const context: __SerdeContext & any /*event stream context unsupported in ssdk*/ = {
     ...ctx,
     endpoint: () =>
       Promise.resolve({
@@ -7075,11 +7566,9 @@ export const serializePostPlayerActionResponse = async (
     "content-type": "application/json",
   });
   let body: any;
-  body = JSON.stringify(
-    take(input, {
-      action: (_) => se_PlayerAction(_, context),
-    })
-  );
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
   if (
     body &&
     Object.keys(headers)
@@ -7098,11 +7587,11 @@ export const serializePostPlayerActionResponse = async (
   });
 };
 
-export const serializePostUnionWithJsonNameResponse = async (
-  input: PostUnionWithJsonNameServerOutput,
+export const serializeOutputStreamWithInitialResponseResponse = async (
+  input: OutputStreamWithInitialResponseServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
-  const context: __SerdeContext = {
+  const context: __SerdeContext & any /*event stream context unsupported in ssdk*/ = {
     ...ctx,
     endpoint: () =>
       Promise.resolve({
@@ -7114,13 +7603,12 @@ export const serializePostUnionWithJsonNameResponse = async (
   const statusCode = 200;
   let headers: any = map({}, isSerializableHeaderValue, {
     "content-type": "application/json",
+    [_irm_]: input[_iRMn]!,
   });
   let body: any;
-  body = JSON.stringify(
-    take(input, {
-      value: (_) => se_UnionWithJsonName(_, context),
-    })
-  );
+  if (input.stream !== undefined) {
+    body = se_EventStream(input.stream, context);
+  }
   if (
     body &&
     Object.keys(headers)
@@ -7139,8 +7627,8 @@ export const serializePostUnionWithJsonNameResponse = async (
   });
 };
 
-export const serializePutWithContentEncodingResponse = async (
-  input: PutWithContentEncodingServerOutput,
+export const serializePostPlayerActionResponse = async (
+  input: PostPlayerActionServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -7153,8 +7641,15 @@ export const serializePutWithContentEncodingResponse = async (
       }),
   };
   const statusCode = 200;
-  let headers: any = map({}, isSerializableHeaderValue, {});
+  let headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+  });
   let body: any;
+  body = JSON.stringify(
+    take(input, {
+      action: (_) => se_PlayerAction(_, context),
+    })
+  );
   if (
     body &&
     Object.keys(headers)
@@ -7173,8 +7668,8 @@ export const serializePutWithContentEncodingResponse = async (
   });
 };
 
-export const serializeQueryIdempotencyTokenAutoFillResponse = async (
-  input: QueryIdempotencyTokenAutoFillServerOutput,
+export const serializePostUnionWithJsonNameResponse = async (
+  input: PostUnionWithJsonNameServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -7187,8 +7682,15 @@ export const serializeQueryIdempotencyTokenAutoFillResponse = async (
       }),
   };
   const statusCode = 200;
-  let headers: any = map({}, isSerializableHeaderValue, {});
+  let headers: any = map({}, isSerializableHeaderValue, {
+    "content-type": "application/json",
+  });
   let body: any;
+  body = JSON.stringify(
+    take(input, {
+      value: (_) => se_UnionWithJsonName(_, context),
+    })
+  );
   if (
     body &&
     Object.keys(headers)
@@ -7207,8 +7709,76 @@ export const serializeQueryIdempotencyTokenAutoFillResponse = async (
   });
 };
 
-export const serializeQueryParamsAsStringListMapResponse = async (
-  input: QueryParamsAsStringListMapServerOutput,
+export const serializePutWithContentEncodingResponse = async (
+  input: PutWithContentEncodingServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {});
+  let body: any;
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+export const serializeQueryIdempotencyTokenAutoFillResponse = async (
+  input: QueryIdempotencyTokenAutoFillServerOutput,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 200;
+  let headers: any = map({}, isSerializableHeaderValue, {});
+  let body: any;
+  if (
+    body &&
+    Object.keys(headers)
+      .map((str) => str.toLowerCase())
+      .indexOf("content-length") === -1
+  ) {
+    const length = calculateBodyLength(body);
+    if (length !== undefined) {
+      headers = { ...headers, "content-length": String(length) };
+    }
+  }
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+export const serializeQueryParamsAsStringListMapResponse = async (
+  input: QueryParamsAsStringListMapServerOutput,
   ctx: ServerSerdeContext
 ): Promise<__HttpResponse> => {
   const context: __SerdeContext = {
@@ -8174,6 +8744,372 @@ export const serializeInvalidGreetingError = async (
   });
 };
 
+export const serializeServiceUnavailableErrorError = async (
+  input: ServiceUnavailableError,
+  ctx: ServerSerdeContext
+): Promise<__HttpResponse> => {
+  const context: __SerdeContext = {
+    ...ctx,
+    endpoint: () =>
+      Promise.resolve({
+        protocol: "",
+        hostname: "",
+        path: "",
+      }),
+  };
+  const statusCode = 500;
+  const headers: any = map({}, isSerializableHeaderValue, {
+    "x-amzn-errortype": "ServiceUnavailableError",
+    "content-type": "application/json",
+  });
+  let body: any;
+  body = JSON.stringify(
+    take(input, {
+      message: [],
+    })
+  );
+  return new __HttpResponse({
+    headers,
+    body,
+    statusCode,
+  });
+};
+
+/**
+ * serializeAws_restJson1EventStream
+ */
+const se_EventStream = (input: any, context: __SerdeContext & __EventStreamSerdeContext): any => {
+  const eventMarshallingVisitor = (event: any): __Message =>
+    EventStream.visit(event, {
+      headers: (value) => se_HeadersEvent_event(value, context),
+      blobPayload: (value) => se_BlobPayloadEvent_event(value, context),
+      stringPayload: (value) => se_StringPayloadEvent_event(value, context),
+      structurePayload: (value) => se_StructurePayloadEvent_event(value, context),
+      unionPayload: (value) => se_UnionPayloadEvent_event(value, context),
+      headersAndExplicitPayload: (value) => se_HeadersAndExplicitPayloadEvent_event(value, context),
+      headersAndImplicitPayload: (value) => se_HeadersAndImplicitPayloadEvent_event(value, context),
+      error: (value) => se_ErrorEvent_event(value, context),
+      _: (value) => value as any,
+    });
+  return context.eventStreamMarshaller.serialize(input, eventMarshallingVisitor);
+};
+const se_BlobPayloadEvent_event = (input: BlobPayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "blobPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/octet-stream" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = input.payload;
+  }
+  return { headers, body };
+};
+const se_ErrorEvent_event = (input: ErrorEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "error" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  let body = new Uint8Array();
+  body = _json(input);
+  body = context.utf8Decoder(JSON.stringify(body));
+  return { headers, body };
+};
+const se_HeadersAndExplicitPayloadEvent_event = (
+  input: HeadersAndExplicitPayloadEvent,
+  context: __SerdeContext
+): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "headersAndExplicitPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  if (input.header != null) {
+    headers["header"] = { type: "string", value: input.header };
+  }
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = _json(input.payload);
+    body = context.utf8Decoder(JSON.stringify(body));
+  }
+  return { headers, body };
+};
+const se_HeadersAndImplicitPayloadEvent_event = (
+  input: HeadersAndImplicitPayloadEvent,
+  context: __SerdeContext
+): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "headersAndImplicitPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  if (input.header != null) {
+    headers["header"] = { type: "string", value: input.header };
+  }
+  let body = new Uint8Array();
+  delete input["header"];
+  body = _json(input);
+  body = context.utf8Decoder(JSON.stringify(body));
+  return { headers, body };
+};
+const se_HeadersEvent_event = (input: HeadersEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "headers" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  if (input.booleanHeader != null) {
+    headers["booleanHeader"] = { type: "boolean", value: input.booleanHeader };
+  }
+  if (input.byteHeader != null) {
+    headers["byteHeader"] = { type: "byte", value: input.byteHeader };
+  }
+  if (input.shortHeader != null) {
+    headers["shortHeader"] = { type: "short", value: input.shortHeader };
+  }
+  if (input.intHeader != null) {
+    headers["intHeader"] = { type: "integer", value: input.intHeader };
+  }
+  if (input.longHeader != null) {
+    headers["longHeader"] = { type: "long", value: __Int64.fromNumber(input.longHeader) };
+  }
+  if (input.blobHeader != null) {
+    headers["blobHeader"] = { type: "binary", value: input.blobHeader };
+  }
+  if (input.stringHeader != null) {
+    headers["stringHeader"] = { type: "string", value: input.stringHeader };
+  }
+  if (input.timestampHeader != null) {
+    headers["timestampHeader"] = { type: "timestamp", value: input.timestampHeader };
+  }
+  let body = new Uint8Array();
+  delete input["booleanHeader"];
+  delete input["byteHeader"];
+  delete input["shortHeader"];
+  delete input["intHeader"];
+  delete input["longHeader"];
+  delete input["blobHeader"];
+  delete input["stringHeader"];
+  delete input["timestampHeader"];
+  body = se_HeadersEvent(input, context);
+  body = context.utf8Decoder(JSON.stringify(body));
+  return { headers, body };
+};
+const se_StringPayloadEvent_event = (input: StringPayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "stringPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "text/plain" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = context.utf8Decoder(input.payload);
+  }
+  return { headers, body };
+};
+const se_StructurePayloadEvent_event = (input: StructurePayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "structurePayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = _json(input.payload);
+    body = context.utf8Decoder(JSON.stringify(body));
+  }
+  return { headers, body };
+};
+const se_UnionPayloadEvent_event = (input: UnionPayloadEvent, context: __SerdeContext): __Message => {
+  const headers: __MessageHeaders = {
+    ":event-type": { type: "string", value: "unionPayload" },
+    ":message-type": { type: "string", value: "event" },
+    ":content-type": { type: "string", value: "application/json" },
+  };
+  let body = new Uint8Array();
+  if (input.payload != null) {
+    body = _json(input.payload);
+    body = context.utf8Decoder(JSON.stringify(body));
+  }
+  return { headers, body };
+};
+/**
+ * deserializeAws_restJson1EventStream
+ */
+const de_EventStream = (
+  output: any,
+  context: __SerdeContext & __EventStreamSerdeContext
+): AsyncIterable<EventStream> => {
+  return context.eventStreamMarshaller.deserialize(output, async (event) => {
+    if (event["headers"] != null) {
+      return {
+        headers: await de_HeadersEvent_event(event["headers"], context),
+      };
+    }
+    if (event["blobPayload"] != null) {
+      return {
+        blobPayload: await de_BlobPayloadEvent_event(event["blobPayload"], context),
+      };
+    }
+    if (event["stringPayload"] != null) {
+      return {
+        stringPayload: await de_StringPayloadEvent_event(event["stringPayload"], context),
+      };
+    }
+    if (event["structurePayload"] != null) {
+      return {
+        structurePayload: await de_StructurePayloadEvent_event(event["structurePayload"], context),
+      };
+    }
+    if (event["unionPayload"] != null) {
+      return {
+        unionPayload: await de_UnionPayloadEvent_event(event["unionPayload"], context),
+      };
+    }
+    if (event["headersAndExplicitPayload"] != null) {
+      return {
+        headersAndExplicitPayload: await de_HeadersAndExplicitPayloadEvent_event(
+          event["headersAndExplicitPayload"],
+          context
+        ),
+      };
+    }
+    if (event["headersAndImplicitPayload"] != null) {
+      return {
+        headersAndImplicitPayload: await de_HeadersAndImplicitPayloadEvent_event(
+          event["headersAndImplicitPayload"],
+          context
+        ),
+      };
+    }
+    if (event["error"] != null) {
+      return {
+        error: await de_ErrorEvent_event(event["error"], context),
+      };
+    }
+    return { $unknown: event as any };
+  });
+};
+const de_BlobPayloadEvent_event = async (output: any, context: __SerdeContext): Promise<BlobPayloadEvent> => {
+  const contents: BlobPayloadEvent = {} as any;
+  contents.payload = output.body;
+  return contents;
+};
+const de_ErrorEvent_event = async (output: any, context: __SerdeContext): Promise<ErrorEvent> => {
+  const parsedOutput: any = {
+    ...output,
+    body: await parseBody(output.body, context),
+  };
+  return de_ErrorEventRes(parsedOutput, context);
+};
+const de_HeadersAndExplicitPayloadEvent_event = async (
+  output: any,
+  context: __SerdeContext
+): Promise<HeadersAndExplicitPayloadEvent> => {
+  const contents: HeadersAndExplicitPayloadEvent = {} as any;
+  if (output.headers[_he] !== undefined) {
+    contents[_he] = output.headers[_he].value;
+  }
+
+  const data: any = await parseBody(output.body, context);
+  contents.payload = _json(data);
+  return contents;
+};
+const de_HeadersAndImplicitPayloadEvent_event = async (
+  output: any,
+  context: __SerdeContext
+): Promise<HeadersAndImplicitPayloadEvent> => {
+  const contents: HeadersAndImplicitPayloadEvent = {} as any;
+  if (output.headers[_he] !== undefined) {
+    contents[_he] = output.headers[_he].value;
+  }
+
+  const data: any = await parseBody(output.body, context);
+  Object.assign(contents, _json(data));
+  return contents;
+};
+const de_HeadersEvent_event = async (output: any, context: __SerdeContext): Promise<HeadersEvent> => {
+  const contents: HeadersEvent = {} as any;
+  if (output.headers[_bH] !== undefined) {
+    contents[_bH] = output.headers[_bH].value;
+  }
+
+  if (output.headers[_bHy] !== undefined) {
+    contents[_bHy] = output.headers[_bHy].value;
+  }
+
+  if (output.headers[_sHh] !== undefined) {
+    contents[_sHh] = output.headers[_sHh].value;
+  }
+
+  if (output.headers[_iH] !== undefined) {
+    contents[_iH] = output.headers[_iH].value;
+  }
+
+  if (output.headers[_lH] !== undefined) {
+    contents[_lH] = output.headers[_lH].value;
+  }
+
+  if (output.headers[_bHl] !== undefined) {
+    contents[_bHl] = output.headers[_bHl].value;
+  }
+
+  if (output.headers[_sHt] !== undefined) {
+    contents[_sHt] = output.headers[_sHt].value;
+  }
+
+  if (output.headers[_tH] !== undefined) {
+    contents[_tH] = output.headers[_tH].value;
+  }
+
+  const data: any = await parseBody(output.body, context);
+  Object.assign(contents, de_HeadersEvent(data, context));
+  return contents;
+};
+const de_StringPayloadEvent_event = async (output: any, context: __SerdeContext): Promise<StringPayloadEvent> => {
+  const contents: StringPayloadEvent = {} as any;
+  contents.payload = await collectBodyString(output.body, context);
+  return contents;
+};
+const de_StructurePayloadEvent_event = async (output: any, context: __SerdeContext): Promise<StructurePayloadEvent> => {
+  const contents: StructurePayloadEvent = {} as any;
+  const data: any = await parseBody(output.body, context);
+  contents.payload = _json(data);
+  return contents;
+};
+const de_UnionPayloadEvent_event = async (output: any, context: __SerdeContext): Promise<UnionPayloadEvent> => {
+  const contents: UnionPayloadEvent = {} as any;
+  const data: any = await parseBody(output.body, context);
+  contents.payload = _json(data);
+  return contents;
+};
+/**
+ * deserializeAws_restJson1ErrorEventRes
+ */
+const de_ErrorEventRes = async (parsedOutput: any, context: __SerdeContext): Promise<ErrorEvent> => {
+  const contents: any = map({});
+  const data: any = parsedOutput.body;
+  const doc = take(data, {
+    message: __expectString,
+  });
+  Object.assign(contents, doc);
+  const exception: any /* $metadata unsupported on ssdk error */ = new ErrorEvent({
+    $metadata: deserializeMetadata(parsedOutput),
+    ...contents,
+  });
+  return __decorateServiceException(exception, parsedOutput.body);
+};
+
+/**
+ * serializeAws_restJson1BlobPayloadEvent
+ */
+const se_BlobPayloadEvent = (input: BlobPayloadEvent, context: __SerdeContext): any => {
+  return take(input, {
+    payload: context.base64Encoder,
+  });
+};
+
 /**
  * serializeAws_restJson1ComplexNestedErrorData
  */
@@ -8303,6 +9239,15 @@ const se_DocumentValuedMap = (input: Record<string, __DocumentType>, context: __
   }, {});
 };
 
+/**
+ * serializeAws_restJson1ErrorEvent
+ */
+const se_ErrorEvent = (input: ErrorEvent, context: __SerdeContext): any => {
+  return take(input, {
+    message: [],
+  });
+};
+
 /**
  * serializeAws_restJson1Farewell
  */
@@ -8312,6 +9257,42 @@ const se_Farewell = (input: Farewell, context: __SerdeContext): any => {
   });
 };
 
+/**
+ * serializeAws_restJson1HeadersAndExplicitPayloadEvent
+ */
+const se_HeadersAndExplicitPayloadEvent = (input: HeadersAndExplicitPayloadEvent, context: __SerdeContext): any => {
+  return take(input, {
+    header: [],
+    payload: (_) => se_PayloadStructure(_, context),
+  });
+};
+
+/**
+ * serializeAws_restJson1HeadersAndImplicitPayloadEvent
+ */
+const se_HeadersAndImplicitPayloadEvent = (input: HeadersAndImplicitPayloadEvent, context: __SerdeContext): any => {
+  return take(input, {
+    header: [],
+    payload: [],
+  });
+};
+
+/**
+ * serializeAws_restJson1HeadersEvent
+ */
+const se_HeadersEvent = (input: HeadersEvent, context: __SerdeContext): any => {
+  return take(input, {
+    blobHeader: context.base64Encoder,
+    booleanHeader: [],
+    byteHeader: [],
+    intHeader: [],
+    longHeader: [],
+    shortHeader: [],
+    stringHeader: [],
+    timestampHeader: __serializeDateTime,
+  });
+};
+
 /**
  * serializeAws_restJson1MyUnion
  */
@@ -8350,6 +9331,25 @@ const se_PayloadConfig = (input: PayloadConfig, context: __SerdeContext): any =>
   });
 };
 
+/**
+ * serializeAws_restJson1PayloadStructure
+ */
+const se_PayloadStructure = (input: PayloadStructure, context: __SerdeContext): any => {
+  return take(input, {
+    structureMember: [],
+  });
+};
+
+/**
+ * serializeAws_restJson1PayloadUnion
+ */
+const se_PayloadUnion = (input: PayloadUnion, context: __SerdeContext): any => {
+  return PayloadUnion.visit(input, {
+    unionMember: (value) => ({ unionMember: value }),
+    _: (name, value) => ({ [name]: value } as any),
+  });
+};
+
 /**
  * serializeAws_restJson1PlayerAction
  */
@@ -8386,6 +9386,25 @@ const se_RecursiveShapesInputOutputNested2 = (
   });
 };
 
+/**
+ * serializeAws_restJson1SingletonEvent
+ */
+const se_SingletonEvent = (input: SingletonEvent, context: __SerdeContext): any => {
+  return take(input, {
+    value: [],
+  });
+};
+
+/**
+ * serializeAws_restJson1SingletonEventStream
+ */
+const se_SingletonEventStream = (input: SingletonEventStream, context: __SerdeContext): any => {
+  return SingletonEventStream.visit(input, {
+    singleton: (value) => ({ singleton: se_SingletonEvent(value, context) }),
+    _: (name, value) => ({ [name]: value } as any),
+  });
+};
+
 /**
  * serializeAws_restJson1SparseBooleanMap
  */
@@ -8442,6 +9461,15 @@ const se_SparseStructMap = (input: Record<string, GreetingStruct>, context: __Se
   }, {});
 };
 
+/**
+ * serializeAws_restJson1StringPayloadEvent
+ */
+const se_StringPayloadEvent = (input: StringPayloadEvent, context: __SerdeContext): any => {
+  return take(input, {
+    payload: [],
+  });
+};
+
 /**
  * serializeAws_restJson1StructureList
  */
@@ -8463,6 +9491,15 @@ const se_StructureListMember = (input: StructureListMember, context: __SerdeCont
   });
 };
 
+/**
+ * serializeAws_restJson1StructurePayloadEvent
+ */
+const se_StructurePayloadEvent = (input: StructurePayloadEvent, context: __SerdeContext): any => {
+  return take(input, {
+    payload: (_) => se_PayloadStructure(_, context),
+  });
+};
+
 /**
  * serializeAws_restJson1TestConfig
  */
@@ -8502,6 +9539,15 @@ const se_UnionPayload = (input: UnionPayload, context: __SerdeContext): any => {
   });
 };
 
+/**
+ * serializeAws_restJson1UnionPayloadEvent
+ */
+const se_UnionPayloadEvent = (input: UnionPayloadEvent, context: __SerdeContext): any => {
+  return take(input, {
+    payload: (_) => se_PayloadUnion(_, context),
+  });
+};
+
 /**
  * serializeAws_restJson1UnionWithJsonName
  */
@@ -8684,6 +9730,15 @@ const se_Unit = (input: Unit, context: __SerdeContext): any => {
   return take(input, {});
 };
 
+/**
+ * deserializeAws_restJson1BlobPayloadEvent
+ */
+const de_BlobPayloadEvent = (output: any, context: __SerdeContext): BlobPayloadEvent => {
+  return take(output, {
+    payload: context.base64Decoder,
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1ClientOptionalDefaults
  */
@@ -8853,6 +9908,15 @@ const de_DocumentValuedMap = (output: any, context: __SerdeContext): Record<stri
   }, {} as Record<string, __DocumentType>);
 };
 
+/**
+ * deserializeAws_restJson1ErrorEvent
+ */
+const de_ErrorEvent = (output: any, context: __SerdeContext): ErrorEvent => {
+  return take(output, {
+    message: __expectString,
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1Farewell
  */
@@ -8862,6 +9926,42 @@ const de_Farewell = (output: any, context: __SerdeContext): Farewell => {
   }) as any;
 };
 
+/**
+ * deserializeAws_restJson1HeadersAndExplicitPayloadEvent
+ */
+const de_HeadersAndExplicitPayloadEvent = (output: any, context: __SerdeContext): HeadersAndExplicitPayloadEvent => {
+  return take(output, {
+    header: __expectString,
+    payload: (_: any) => de_PayloadStructure(_, context),
+  }) as any;
+};
+
+/**
+ * deserializeAws_restJson1HeadersAndImplicitPayloadEvent
+ */
+const de_HeadersAndImplicitPayloadEvent = (output: any, context: __SerdeContext): HeadersAndImplicitPayloadEvent => {
+  return take(output, {
+    header: __expectString,
+    payload: __expectString,
+  }) as any;
+};
+
+/**
+ * deserializeAws_restJson1HeadersEvent
+ */
+const de_HeadersEvent = (output: any, context: __SerdeContext): HeadersEvent => {
+  return take(output, {
+    blobHeader: context.base64Decoder,
+    booleanHeader: __expectBoolean,
+    byteHeader: __expectByte,
+    intHeader: __expectInt32,
+    longHeader: __expectLong,
+    shortHeader: __expectShort,
+    stringHeader: __expectString,
+    timestampHeader: (_: any) => __expectNonNull(__parseRfc3339DateTime(_)),
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1MyUnion
  */
@@ -8930,6 +10030,25 @@ const de_PayloadConfig = (output: any, context: __SerdeContext): PayloadConfig =
   }) as any;
 };
 
+/**
+ * deserializeAws_restJson1PayloadStructure
+ */
+const de_PayloadStructure = (output: any, context: __SerdeContext): PayloadStructure => {
+  return take(output, {
+    structureMember: __expectString,
+  }) as any;
+};
+
+/**
+ * deserializeAws_restJson1PayloadUnion
+ */
+const de_PayloadUnion = (output: any, context: __SerdeContext): PayloadUnion => {
+  if (__expectString(output.unionMember) !== undefined) {
+    return { unionMember: __expectString(output.unionMember) as any };
+  }
+  return { $unknown: Object.entries(output)[0] };
+};
+
 /**
  * deserializeAws_restJson1PlayerAction
  */
@@ -9065,6 +10184,15 @@ const de_SparseStructMap = (output: any, context: __SerdeContext): Record<string
   }, {} as Record<string, GreetingStruct>);
 };
 
+/**
+ * deserializeAws_restJson1StringPayloadEvent
+ */
+const de_StringPayloadEvent = (output: any, context: __SerdeContext): StringPayloadEvent => {
+  return take(output, {
+    payload: __expectString,
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1StructureList
  */
@@ -9090,6 +10218,15 @@ const de_StructureListMember = (output: any, context: __SerdeContext): Structure
   }) as any;
 };
 
+/**
+ * deserializeAws_restJson1StructurePayloadEvent
+ */
+const de_StructurePayloadEvent = (output: any, context: __SerdeContext): StructurePayloadEvent => {
+  return take(output, {
+    payload: (_: any) => de_PayloadStructure(_, context),
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1TestConfig
  */
@@ -9148,6 +10285,15 @@ const de_UnionPayload = (output: any, context: __SerdeContext): UnionPayload =>
   return { $unknown: Object.entries(output)[0] };
 };
 
+/**
+ * deserializeAws_restJson1UnionPayloadEvent
+ */
+const de_UnionPayloadEvent = (output: any, context: __SerdeContext): UnionPayloadEvent => {
+  return take(output, {
+    payload: (_: any) => de_PayloadUnion(__expectUnion(_), context),
+  }) as any;
+};
+
 /**
  * deserializeAws_restJson1UnionWithJsonName
  */
@@ -9432,6 +10578,9 @@ const _H = "Header";
 const _a = "a";
 const _amth = "amz-media-typed-header";
 const _b = "booleaninheader";
+const _bH = "booleanHeader";
+const _bHl = "blobHeader";
+const _bHy = "byteHeader";
 const _bIH = "booleanInHeader";
 const _bIHy = "byteInHeader";
 const _b_ = "b";
@@ -9470,19 +10619,28 @@ const _hTB = "headerTrueBool";
 const _hTL = "headerTimestampList";
 const _he = "header";
 const _i = "integerinheader";
+const _iH = "intHeader";
 const _iIH = "integerInHeader";
+const _iRM = "initialRequestMember";
+const _iRMn = "initialResponseMember";
+const _irm = "initial-request-member";
+const _irm_ = "initial-response-member";
 const _j = "json";
 const _l = "longinheader";
+const _lH = "longHeader";
 const _lIH = "longInHeader";
 const _mDT = "memberDateTime";
 const _mES = "memberEpochSeconds";
 const _mHD = "memberHttpDate";
 const _s = "shortinheader";
 const _sH = "specificHeader";
+const _sHh = "shortHeader";
+const _sHt = "stringHeader";
 const _sIH = "shortInHeader";
 const _t = "timestamp";
 const _tDT = "targetDateTime";
 const _tES = "targetEpochSeconds";
+const _tH = "timestampHeader";
 const _tHD = "targetHttpDate";
 const _tI = "testId";
 const _xa = "x-a";
diff --git a/private/aws-restjson-server/src/server/RestJsonService.ts b/private/aws-restjson-server/src/server/RestJsonService.ts
index 11b44241d0614..0e555e1799cf5 100644
--- a/private/aws-restjson-server/src/server/RestJsonService.ts
+++ b/private/aws-restjson-server/src/server/RestJsonService.ts
@@ -55,6 +55,17 @@ import {
   DocumentTypeAsPayloadSerializer,
   DocumentTypeAsPayloadServerInput,
 } from "./operations/DocumentTypeAsPayload";
+import { DuplexStream, DuplexStreamSerializer, DuplexStreamServerInput } from "./operations/DuplexStream";
+import {
+  DuplexStreamWithDistinctStreams,
+  DuplexStreamWithDistinctStreamsSerializer,
+  DuplexStreamWithDistinctStreamsServerInput,
+} from "./operations/DuplexStreamWithDistinctStreams";
+import {
+  DuplexStreamWithInitialMessages,
+  DuplexStreamWithInitialMessagesSerializer,
+  DuplexStreamWithInitialMessagesServerInput,
+} from "./operations/DuplexStreamWithInitialMessages";
 import {
   EmptyInputAndEmptyOutput,
   EmptyInputAndEmptyOutputSerializer,
@@ -126,6 +137,11 @@ import {
   HttpPrefixHeadersInResponseSerializer,
   HttpPrefixHeadersInResponseServerInput,
 } from "./operations/HttpPrefixHeadersInResponse";
+import {
+  HttpQueryParamsOnlyOperation,
+  HttpQueryParamsOnlyOperationSerializer,
+  HttpQueryParamsOnlyOperationServerInput,
+} from "./operations/HttpQueryParamsOnlyOperation";
 import {
   HttpRequestWithFloatLabels,
   HttpRequestWithFloatLabelsSerializer,
@@ -171,6 +187,12 @@ import {
   InputAndOutputWithHeadersSerializer,
   InputAndOutputWithHeadersServerInput,
 } from "./operations/InputAndOutputWithHeaders";
+import { InputStream, InputStreamSerializer, InputStreamServerInput } from "./operations/InputStream";
+import {
+  InputStreamWithInitialRequest,
+  InputStreamWithInitialRequestSerializer,
+  InputStreamWithInitialRequestServerInput,
+} from "./operations/InputStreamWithInitialRequest";
 import { JsonBlobs, JsonBlobsSerializer, JsonBlobsServerInput } from "./operations/JsonBlobs";
 import { JsonEnums, JsonEnumsSerializer, JsonEnumsServerInput } from "./operations/JsonEnums";
 import { JsonIntEnums, JsonIntEnumsSerializer, JsonIntEnumsServerInput } from "./operations/JsonIntEnums";
@@ -344,6 +366,12 @@ import {
   OperationWithNestedStructureSerializer,
   OperationWithNestedStructureServerInput,
 } from "./operations/OperationWithNestedStructure";
+import { OutputStream, OutputStreamSerializer, OutputStreamServerInput } from "./operations/OutputStream";
+import {
+  OutputStreamWithInitialResponse,
+  OutputStreamWithInitialResponseSerializer,
+  OutputStreamWithInitialResponseServerInput,
+} from "./operations/OutputStreamWithInitialResponse";
 import {
   PostPlayerAction,
   PostPlayerActionSerializer,
@@ -450,6 +478,9 @@ export type RestJsonServiceOperations =
   | "DocumentType"
   | "DocumentTypeAsMapValue"
   | "DocumentTypeAsPayload"
+  | "DuplexStream"
+  | "DuplexStreamWithDistinctStreams"
+  | "DuplexStreamWithInitialMessages"
   | "EmptyInputAndEmptyOutput"
   | "EndpointOperation"
   | "EndpointWithHostLabelOperation"
@@ -465,6 +496,7 @@ export type RestJsonServiceOperations =
   | "HttpPayloadWithUnion"
   | "HttpPrefixHeaders"
   | "HttpPrefixHeadersInResponse"
+  | "HttpQueryParamsOnlyOperation"
   | "HttpRequestWithFloatLabels"
   | "HttpRequestWithGreedyLabelInPath"
   | "HttpRequestWithLabels"
@@ -474,6 +506,8 @@ export type RestJsonServiceOperations =
   | "HttpStringPayload"
   | "IgnoreQueryParamsInResponse"
   | "InputAndOutputWithHeaders"
+  | "InputStream"
+  | "InputStreamWithInitialRequest"
   | "JsonBlobs"
   | "JsonEnums"
   | "JsonIntEnums"
@@ -523,6 +557,8 @@ export type RestJsonServiceOperations =
   | "OmitsSerializingEmptyLists"
   | "OperationWithDefaults"
   | "OperationWithNestedStructure"
+  | "OutputStream"
+  | "OutputStreamWithInitialResponse"
   | "PostPlayerAction"
   | "PostUnionWithJsonName"
   | "PutWithContentEncoding"
@@ -556,6 +592,9 @@ export interface RestJsonService<Context> {
   DocumentType: DocumentType<Context>;
   DocumentTypeAsMapValue: DocumentTypeAsMapValue<Context>;
   DocumentTypeAsPayload: DocumentTypeAsPayload<Context>;
+  DuplexStream: DuplexStream<Context>;
+  DuplexStreamWithDistinctStreams: DuplexStreamWithDistinctStreams<Context>;
+  DuplexStreamWithInitialMessages: DuplexStreamWithInitialMessages<Context>;
   EmptyInputAndEmptyOutput: EmptyInputAndEmptyOutput<Context>;
   EndpointOperation: EndpointOperation<Context>;
   EndpointWithHostLabelOperation: EndpointWithHostLabelOperation<Context>;
@@ -571,6 +610,7 @@ export interface RestJsonService<Context> {
   HttpPayloadWithUnion: HttpPayloadWithUnion<Context>;
   HttpPrefixHeaders: HttpPrefixHeaders<Context>;
   HttpPrefixHeadersInResponse: HttpPrefixHeadersInResponse<Context>;
+  HttpQueryParamsOnlyOperation: HttpQueryParamsOnlyOperation<Context>;
   HttpRequestWithFloatLabels: HttpRequestWithFloatLabels<Context>;
   HttpRequestWithGreedyLabelInPath: HttpRequestWithGreedyLabelInPath<Context>;
   HttpRequestWithLabels: HttpRequestWithLabels<Context>;
@@ -580,6 +620,8 @@ export interface RestJsonService<Context> {
   HttpStringPayload: HttpStringPayload<Context>;
   IgnoreQueryParamsInResponse: IgnoreQueryParamsInResponse<Context>;
   InputAndOutputWithHeaders: InputAndOutputWithHeaders<Context>;
+  InputStream: InputStream<Context>;
+  InputStreamWithInitialRequest: InputStreamWithInitialRequest<Context>;
   JsonBlobs: JsonBlobs<Context>;
   JsonEnums: JsonEnums<Context>;
   JsonIntEnums: JsonIntEnums<Context>;
@@ -629,6 +671,8 @@ export interface RestJsonService<Context> {
   OmitsSerializingEmptyLists: OmitsSerializingEmptyLists<Context>;
   OperationWithDefaults: OperationWithDefaults<Context>;
   OperationWithNestedStructure: OperationWithNestedStructure<Context>;
+  OutputStream: OutputStream<Context>;
+  OutputStreamWithInitialResponse: OutputStreamWithInitialResponse<Context>;
   PostPlayerAction: PostPlayerAction<Context>;
   PostUnionWithJsonName: PostUnionWithJsonName<Context>;
   PutWithContentEncoding: PutWithContentEncoding<Context>;
@@ -840,6 +884,42 @@ export class RestJsonServiceHandler<Context> implements __ServiceHandler<Context
           this.validationCustomizer
         );
       }
+      case "DuplexStream": {
+        return handle(
+          request,
+          context,
+          "DuplexStream",
+          this.serializerFactory("DuplexStream"),
+          this.service.DuplexStream,
+          this.serializeFrameworkException,
+          DuplexStreamServerInput.validate,
+          this.validationCustomizer
+        );
+      }
+      case "DuplexStreamWithDistinctStreams": {
+        return handle(
+          request,
+          context,
+          "DuplexStreamWithDistinctStreams",
+          this.serializerFactory("DuplexStreamWithDistinctStreams"),
+          this.service.DuplexStreamWithDistinctStreams,
+          this.serializeFrameworkException,
+          DuplexStreamWithDistinctStreamsServerInput.validate,
+          this.validationCustomizer
+        );
+      }
+      case "DuplexStreamWithInitialMessages": {
+        return handle(
+          request,
+          context,
+          "DuplexStreamWithInitialMessages",
+          this.serializerFactory("DuplexStreamWithInitialMessages"),
+          this.service.DuplexStreamWithInitialMessages,
+          this.serializeFrameworkException,
+          DuplexStreamWithInitialMessagesServerInput.validate,
+          this.validationCustomizer
+        );
+      }
       case "EmptyInputAndEmptyOutput": {
         return handle(
           request,
@@ -1020,6 +1100,18 @@ export class RestJsonServiceHandler<Context> implements __ServiceHandler<Context
           this.validationCustomizer
         );
       }
+      case "HttpQueryParamsOnlyOperation": {
+        return handle(
+          request,
+          context,
+          "HttpQueryParamsOnlyOperation",
+          this.serializerFactory("HttpQueryParamsOnlyOperation"),
+          this.service.HttpQueryParamsOnlyOperation,
+          this.serializeFrameworkException,
+          HttpQueryParamsOnlyOperationServerInput.validate,
+          this.validationCustomizer
+        );
+      }
       case "HttpRequestWithFloatLabels": {
         return handle(
           request,
@@ -1128,6 +1220,30 @@ export class RestJsonServiceHandler<Context> implements __ServiceHandler<Context
           this.validationCustomizer
         );
       }
+      case "InputStream": {
+        return handle(
+          request,
+          context,
+          "InputStream",
+          this.serializerFactory("InputStream"),
+          this.service.InputStream,
+          this.serializeFrameworkException,
+          InputStreamServerInput.validate,
+          this.validationCustomizer
+        );
+      }
+      case "InputStreamWithInitialRequest": {
+        return handle(
+          request,
+          context,
+          "InputStreamWithInitialRequest",
+          this.serializerFactory("InputStreamWithInitialRequest"),
+          this.service.InputStreamWithInitialRequest,
+          this.serializeFrameworkException,
+          InputStreamWithInitialRequestServerInput.validate,
+          this.validationCustomizer
+        );
+      }
       case "JsonBlobs": {
         return handle(
           request,
@@ -1716,6 +1832,30 @@ export class RestJsonServiceHandler<Context> implements __ServiceHandler<Context
           this.validationCustomizer
         );
       }
+      case "OutputStream": {
+        return handle(
+          request,
+          context,
+          "OutputStream",
+          this.serializerFactory("OutputStream"),
+          this.service.OutputStream,
+          this.serializeFrameworkException,
+          OutputStreamServerInput.validate,
+          this.validationCustomizer
+        );
+      }
+      case "OutputStreamWithInitialResponse": {
+        return handle(
+          request,
+          context,
+          "OutputStreamWithInitialResponse",
+          this.serializerFactory("OutputStreamWithInitialResponse"),
+          this.service.OutputStreamWithInitialResponse,
+          this.serializeFrameworkException,
+          OutputStreamWithInitialResponseServerInput.validate,
+          this.validationCustomizer
+        );
+      }
       case "PostPlayerAction": {
         return handle(
           request,
@@ -2062,6 +2202,22 @@ export const getRestJsonServiceHandler = <Context>(
       [],
       { service: "RestJson", operation: "DocumentTypeAsPayload" }
     ),
+    new httpbinding.UriSpec<"RestJson", "DuplexStream">("POST", [{ type: "path_literal", value: "DuplexStream" }], [], {
+      service: "RestJson",
+      operation: "DuplexStream",
+    }),
+    new httpbinding.UriSpec<"RestJson", "DuplexStreamWithDistinctStreams">(
+      "POST",
+      [{ type: "path_literal", value: "DuplexStreamWithDistinctStreams" }],
+      [],
+      { service: "RestJson", operation: "DuplexStreamWithDistinctStreams" }
+    ),
+    new httpbinding.UriSpec<"RestJson", "DuplexStreamWithInitialMessages">(
+      "POST",
+      [{ type: "path_literal", value: "DuplexStreamWithInitialMessages" }],
+      [],
+      { service: "RestJson", operation: "DuplexStreamWithInitialMessages" }
+    ),
     new httpbinding.UriSpec<"RestJson", "EmptyInputAndEmptyOutput">(
       "POST",
       [{ type: "path_literal", value: "EmptyInputAndEmptyOutput" }],
@@ -2152,6 +2308,12 @@ export const getRestJsonServiceHandler = <Context>(
       [],
       { service: "RestJson", operation: "HttpPrefixHeadersInResponse" }
     ),
+    new httpbinding.UriSpec<"RestJson", "HttpQueryParamsOnlyOperation">(
+      "GET",
+      [{ type: "path_literal", value: "http-query-params-only" }],
+      [],
+      { service: "RestJson", operation: "HttpQueryParamsOnlyOperation" }
+    ),
     new httpbinding.UriSpec<"RestJson", "HttpRequestWithFloatLabels">(
       "GET",
       [{ type: "path_literal", value: "FloatHttpLabels" }, { type: "path" }, { type: "path" }],
@@ -2231,6 +2393,16 @@ export const getRestJsonServiceHandler = <Context>(
       [],
       { service: "RestJson", operation: "InputAndOutputWithHeaders" }
     ),
+    new httpbinding.UriSpec<"RestJson", "InputStream">("POST", [{ type: "path_literal", value: "InputStream" }], [], {
+      service: "RestJson",
+      operation: "InputStream",
+    }),
+    new httpbinding.UriSpec<"RestJson", "InputStreamWithInitialRequest">(
+      "POST",
+      [{ type: "path_literal", value: "InputStreamWithInitialRequest" }],
+      [],
+      { service: "RestJson", operation: "InputStreamWithInitialRequest" }
+    ),
     new httpbinding.UriSpec<"RestJson", "JsonBlobs">("POST", [{ type: "path_literal", value: "JsonBlobs" }], [], {
       service: "RestJson",
       operation: "JsonBlobs",
@@ -2511,6 +2683,16 @@ export const getRestJsonServiceHandler = <Context>(
       [],
       { service: "RestJson", operation: "OperationWithNestedStructure" }
     ),
+    new httpbinding.UriSpec<"RestJson", "OutputStream">("POST", [{ type: "path_literal", value: "OutputStream" }], [], {
+      service: "RestJson",
+      operation: "OutputStream",
+    }),
+    new httpbinding.UriSpec<"RestJson", "OutputStreamWithInitialResponse">(
+      "POST",
+      [{ type: "path_literal", value: "OutputStreamWithInitialResponse" }],
+      [],
+      { service: "RestJson", operation: "OutputStreamWithInitialResponse" }
+    ),
     new httpbinding.UriSpec<"RestJson", "PostPlayerAction">(
       "POST",
       [{ type: "path_literal", value: "PostPlayerAction" }],
@@ -2677,6 +2859,12 @@ export const getRestJsonServiceHandler = <Context>(
         return new DocumentTypeAsMapValueSerializer();
       case "DocumentTypeAsPayload":
         return new DocumentTypeAsPayloadSerializer();
+      case "DuplexStream":
+        return new DuplexStreamSerializer();
+      case "DuplexStreamWithDistinctStreams":
+        return new DuplexStreamWithDistinctStreamsSerializer();
+      case "DuplexStreamWithInitialMessages":
+        return new DuplexStreamWithInitialMessagesSerializer();
       case "EmptyInputAndEmptyOutput":
         return new EmptyInputAndEmptyOutputSerializer();
       case "EndpointOperation":
@@ -2707,6 +2895,8 @@ export const getRestJsonServiceHandler = <Context>(
         return new HttpPrefixHeadersSerializer();
       case "HttpPrefixHeadersInResponse":
         return new HttpPrefixHeadersInResponseSerializer();
+      case "HttpQueryParamsOnlyOperation":
+        return new HttpQueryParamsOnlyOperationSerializer();
       case "HttpRequestWithFloatLabels":
         return new HttpRequestWithFloatLabelsSerializer();
       case "HttpRequestWithGreedyLabelInPath":
@@ -2725,6 +2915,10 @@ export const getRestJsonServiceHandler = <Context>(
         return new IgnoreQueryParamsInResponseSerializer();
       case "InputAndOutputWithHeaders":
         return new InputAndOutputWithHeadersSerializer();
+      case "InputStream":
+        return new InputStreamSerializer();
+      case "InputStreamWithInitialRequest":
+        return new InputStreamWithInitialRequestSerializer();
       case "JsonBlobs":
         return new JsonBlobsSerializer();
       case "JsonEnums":
@@ -2823,6 +3017,10 @@ export const getRestJsonServiceHandler = <Context>(
         return new OperationWithDefaultsSerializer();
       case "OperationWithNestedStructure":
         return new OperationWithNestedStructureSerializer();
+      case "OutputStream":
+        return new OutputStreamSerializer();
+      case "OutputStreamWithInitialResponse":
+        return new OutputStreamWithInitialResponseSerializer();
       case "PostPlayerAction":
         return new PostPlayerActionSerializer();
       case "PostUnionWithJsonName":
diff --git a/private/aws-restjson-server/src/server/operations/DuplexStream.ts b/private/aws-restjson-server/src/server/operations/DuplexStream.ts
new file mode 100644
index 0000000000000..daa8b11bf7418
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/DuplexStream.ts
@@ -0,0 +1,174 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { DuplexStreamInput, DuplexStreamOutput } from "../../models/models_0";
+import {
+  deserializeDuplexStreamRequest,
+  serializeDuplexStreamResponse,
+  serializeFrameworkException,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type DuplexStream<Context> = __Operation<DuplexStreamServerInput, DuplexStreamServerOutput, Context>;
+
+export interface DuplexStreamServerInput extends DuplexStreamInput {}
+export namespace DuplexStreamServerInput {
+  /**
+   * @internal
+   */
+  export const validate: (obj: Parameters<typeof DuplexStreamInput.validate>[0]) => __ValidationFailure[] =
+    DuplexStreamInput.validate;
+}
+export interface DuplexStreamServerOutput extends DuplexStreamOutput {}
+
+export type DuplexStreamErrors = never;
+
+export class DuplexStreamSerializer
+  implements __OperationSerializer<RestJsonService<any>, "DuplexStream", DuplexStreamErrors>
+{
+  serialize = serializeDuplexStreamResponse;
+  deserialize = deserializeDuplexStreamRequest;
+
+  isOperationError(error: any): error is DuplexStreamErrors {
+    return false;
+  }
+
+  serializeError(error: DuplexStreamErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    throw error;
+  }
+}
+
+export const getDuplexStreamHandler = <Context>(
+  operation: __Operation<DuplexStreamServerInput, DuplexStreamServerOutput, Context>,
+  customizer: __ValidationCustomizer<"DuplexStream">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "DuplexStream">([
+    new httpbinding.UriSpec<"RestJson", "DuplexStream">("POST", [{ type: "path_literal", value: "DuplexStream" }], [], {
+      service: "RestJson",
+      operation: "DuplexStream",
+    }),
+  ]);
+  return new DuplexStreamHandler(operation, mux, new DuplexStreamSerializer(), serializeFrameworkException, customizer);
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class DuplexStreamHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<DuplexStreamServerInput, DuplexStreamServerOutput, Context>;
+  private readonly mux: __Mux<"RestJson", "DuplexStream">;
+  private readonly serializer: __OperationSerializer<RestJsonService<Context>, "DuplexStream", DuplexStreamErrors>;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"DuplexStream">;
+  /**
+   * Construct a DuplexStream handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for DuplexStream
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for DuplexStream that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<DuplexStreamServerInput, DuplexStreamServerOutput, Context>,
+    mux: __Mux<"RestJson", "DuplexStream">,
+    serializer: __OperationSerializer<RestJsonService<Context>, "DuplexStream", DuplexStreamErrors>,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"DuplexStream">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.DuplexStream. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "DuplexStream",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      DuplexStreamServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/DuplexStreamWithDistinctStreams.ts b/private/aws-restjson-server/src/server/operations/DuplexStreamWithDistinctStreams.ts
new file mode 100644
index 0000000000000..d06ff5bb9110a
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/DuplexStreamWithDistinctStreams.ts
@@ -0,0 +1,212 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { DuplexStreamWithDistinctStreamsInput, DuplexStreamWithDistinctStreamsOutput } from "../../models/models_0";
+import {
+  deserializeDuplexStreamWithDistinctStreamsRequest,
+  serializeDuplexStreamWithDistinctStreamsResponse,
+  serializeFrameworkException,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type DuplexStreamWithDistinctStreams<Context> = __Operation<
+  DuplexStreamWithDistinctStreamsServerInput,
+  DuplexStreamWithDistinctStreamsServerOutput,
+  Context
+>;
+
+export interface DuplexStreamWithDistinctStreamsServerInput extends DuplexStreamWithDistinctStreamsInput {}
+export namespace DuplexStreamWithDistinctStreamsServerInput {
+  /**
+   * @internal
+   */
+  export const validate: (
+    obj: Parameters<typeof DuplexStreamWithDistinctStreamsInput.validate>[0]
+  ) => __ValidationFailure[] = DuplexStreamWithDistinctStreamsInput.validate;
+}
+export interface DuplexStreamWithDistinctStreamsServerOutput extends DuplexStreamWithDistinctStreamsOutput {}
+
+export type DuplexStreamWithDistinctStreamsErrors = never;
+
+export class DuplexStreamWithDistinctStreamsSerializer
+  implements
+    __OperationSerializer<
+      RestJsonService<any>,
+      "DuplexStreamWithDistinctStreams",
+      DuplexStreamWithDistinctStreamsErrors
+    >
+{
+  serialize = serializeDuplexStreamWithDistinctStreamsResponse;
+  deserialize = deserializeDuplexStreamWithDistinctStreamsRequest;
+
+  isOperationError(error: any): error is DuplexStreamWithDistinctStreamsErrors {
+    return false;
+  }
+
+  serializeError(error: DuplexStreamWithDistinctStreamsErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    throw error;
+  }
+}
+
+export const getDuplexStreamWithDistinctStreamsHandler = <Context>(
+  operation: __Operation<
+    DuplexStreamWithDistinctStreamsServerInput,
+    DuplexStreamWithDistinctStreamsServerOutput,
+    Context
+  >,
+  customizer: __ValidationCustomizer<"DuplexStreamWithDistinctStreams">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "DuplexStreamWithDistinctStreams">([
+    new httpbinding.UriSpec<"RestJson", "DuplexStreamWithDistinctStreams">(
+      "POST",
+      [{ type: "path_literal", value: "DuplexStreamWithDistinctStreams" }],
+      [],
+      { service: "RestJson", operation: "DuplexStreamWithDistinctStreams" }
+    ),
+  ]);
+  return new DuplexStreamWithDistinctStreamsHandler(
+    operation,
+    mux,
+    new DuplexStreamWithDistinctStreamsSerializer(),
+    serializeFrameworkException,
+    customizer
+  );
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class DuplexStreamWithDistinctStreamsHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<
+    DuplexStreamWithDistinctStreamsServerInput,
+    DuplexStreamWithDistinctStreamsServerOutput,
+    Context
+  >;
+  private readonly mux: __Mux<"RestJson", "DuplexStreamWithDistinctStreams">;
+  private readonly serializer: __OperationSerializer<
+    RestJsonService<Context>,
+    "DuplexStreamWithDistinctStreams",
+    DuplexStreamWithDistinctStreamsErrors
+  >;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"DuplexStreamWithDistinctStreams">;
+  /**
+   * Construct a DuplexStreamWithDistinctStreams handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for DuplexStreamWithDistinctStreams
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for DuplexStreamWithDistinctStreams that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<
+      DuplexStreamWithDistinctStreamsServerInput,
+      DuplexStreamWithDistinctStreamsServerOutput,
+      Context
+    >,
+    mux: __Mux<"RestJson", "DuplexStreamWithDistinctStreams">,
+    serializer: __OperationSerializer<
+      RestJsonService<Context>,
+      "DuplexStreamWithDistinctStreams",
+      DuplexStreamWithDistinctStreamsErrors
+    >,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"DuplexStreamWithDistinctStreams">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.DuplexStreamWithDistinctStreams. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "DuplexStreamWithDistinctStreams",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      DuplexStreamWithDistinctStreamsServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/DuplexStreamWithInitialMessages.ts b/private/aws-restjson-server/src/server/operations/DuplexStreamWithInitialMessages.ts
new file mode 100644
index 0000000000000..b89270a8ef95c
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/DuplexStreamWithInitialMessages.ts
@@ -0,0 +1,223 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __BaseException,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { ServiceUnavailableError } from "../../models/errors";
+import { DuplexStreamWithInitialMessagesInput, DuplexStreamWithInitialMessagesOutput } from "../../models/models_0";
+import {
+  deserializeDuplexStreamWithInitialMessagesRequest,
+  serializeDuplexStreamWithInitialMessagesResponse,
+  serializeFrameworkException,
+  serializeServiceUnavailableErrorError,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type DuplexStreamWithInitialMessages<Context> = __Operation<
+  DuplexStreamWithInitialMessagesServerInput,
+  DuplexStreamWithInitialMessagesServerOutput,
+  Context
+>;
+
+export interface DuplexStreamWithInitialMessagesServerInput extends DuplexStreamWithInitialMessagesInput {}
+export namespace DuplexStreamWithInitialMessagesServerInput {
+  /**
+   * @internal
+   */
+  export const validate: (
+    obj: Parameters<typeof DuplexStreamWithInitialMessagesInput.validate>[0]
+  ) => __ValidationFailure[] = DuplexStreamWithInitialMessagesInput.validate;
+}
+export interface DuplexStreamWithInitialMessagesServerOutput extends DuplexStreamWithInitialMessagesOutput {}
+
+export type DuplexStreamWithInitialMessagesErrors = ServiceUnavailableError;
+
+export class DuplexStreamWithInitialMessagesSerializer
+  implements
+    __OperationSerializer<
+      RestJsonService<any>,
+      "DuplexStreamWithInitialMessages",
+      DuplexStreamWithInitialMessagesErrors
+    >
+{
+  serialize = serializeDuplexStreamWithInitialMessagesResponse;
+  deserialize = deserializeDuplexStreamWithInitialMessagesRequest;
+
+  isOperationError(error: any): error is DuplexStreamWithInitialMessagesErrors {
+    const names: DuplexStreamWithInitialMessagesErrors["name"][] = ["ServiceUnavailableError"];
+    return names.includes(error.name);
+  }
+
+  serializeError(error: DuplexStreamWithInitialMessagesErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    switch (error.name) {
+      case "ServiceUnavailableError": {
+        return serializeServiceUnavailableErrorError(error, ctx);
+      }
+      default: {
+        throw error;
+      }
+    }
+  }
+}
+
+export const getDuplexStreamWithInitialMessagesHandler = <Context>(
+  operation: __Operation<
+    DuplexStreamWithInitialMessagesServerInput,
+    DuplexStreamWithInitialMessagesServerOutput,
+    Context
+  >,
+  customizer: __ValidationCustomizer<"DuplexStreamWithInitialMessages">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "DuplexStreamWithInitialMessages">([
+    new httpbinding.UriSpec<"RestJson", "DuplexStreamWithInitialMessages">(
+      "POST",
+      [{ type: "path_literal", value: "DuplexStreamWithInitialMessages" }],
+      [],
+      { service: "RestJson", operation: "DuplexStreamWithInitialMessages" }
+    ),
+  ]);
+  return new DuplexStreamWithInitialMessagesHandler(
+    operation,
+    mux,
+    new DuplexStreamWithInitialMessagesSerializer(),
+    serializeFrameworkException,
+    customizer
+  );
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class DuplexStreamWithInitialMessagesHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<
+    DuplexStreamWithInitialMessagesServerInput,
+    DuplexStreamWithInitialMessagesServerOutput,
+    Context
+  >;
+  private readonly mux: __Mux<"RestJson", "DuplexStreamWithInitialMessages">;
+  private readonly serializer: __OperationSerializer<
+    RestJsonService<Context>,
+    "DuplexStreamWithInitialMessages",
+    DuplexStreamWithInitialMessagesErrors
+  >;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"DuplexStreamWithInitialMessages">;
+  /**
+   * Construct a DuplexStreamWithInitialMessages handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for DuplexStreamWithInitialMessages
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for DuplexStreamWithInitialMessages that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<
+      DuplexStreamWithInitialMessagesServerInput,
+      DuplexStreamWithInitialMessagesServerOutput,
+      Context
+    >,
+    mux: __Mux<"RestJson", "DuplexStreamWithInitialMessages">,
+    serializer: __OperationSerializer<
+      RestJsonService<Context>,
+      "DuplexStreamWithInitialMessages",
+      DuplexStreamWithInitialMessagesErrors
+    >,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"DuplexStreamWithInitialMessages">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.DuplexStreamWithInitialMessages. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "DuplexStreamWithInitialMessages",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      DuplexStreamWithInitialMessagesServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/HttpQueryParamsOnlyOperation.ts b/private/aws-restjson-server/src/server/operations/HttpQueryParamsOnlyOperation.ts
new file mode 100644
index 0000000000000..f26a443562810
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/HttpQueryParamsOnlyOperation.ts
@@ -0,0 +1,199 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { HttpQueryParamsOnlyInput } from "../../models/models_0";
+import {
+  deserializeHttpQueryParamsOnlyOperationRequest,
+  serializeFrameworkException,
+  serializeHttpQueryParamsOnlyOperationResponse,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type HttpQueryParamsOnlyOperation<Context> = __Operation<
+  HttpQueryParamsOnlyOperationServerInput,
+  HttpQueryParamsOnlyOperationServerOutput,
+  Context
+>;
+
+export interface HttpQueryParamsOnlyOperationServerInput extends HttpQueryParamsOnlyInput {}
+export namespace HttpQueryParamsOnlyOperationServerInput {
+  /**
+   * @internal
+   */
+  export const validate: (obj: Parameters<typeof HttpQueryParamsOnlyInput.validate>[0]) => __ValidationFailure[] =
+    HttpQueryParamsOnlyInput.validate;
+}
+export interface HttpQueryParamsOnlyOperationServerOutput {}
+
+export type HttpQueryParamsOnlyOperationErrors = never;
+
+export class HttpQueryParamsOnlyOperationSerializer
+  implements
+    __OperationSerializer<RestJsonService<any>, "HttpQueryParamsOnlyOperation", HttpQueryParamsOnlyOperationErrors>
+{
+  serialize = serializeHttpQueryParamsOnlyOperationResponse;
+  deserialize = deserializeHttpQueryParamsOnlyOperationRequest;
+
+  isOperationError(error: any): error is HttpQueryParamsOnlyOperationErrors {
+    return false;
+  }
+
+  serializeError(error: HttpQueryParamsOnlyOperationErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    throw error;
+  }
+}
+
+export const getHttpQueryParamsOnlyOperationHandler = <Context>(
+  operation: __Operation<HttpQueryParamsOnlyOperationServerInput, HttpQueryParamsOnlyOperationServerOutput, Context>,
+  customizer: __ValidationCustomizer<"HttpQueryParamsOnlyOperation">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "HttpQueryParamsOnlyOperation">([
+    new httpbinding.UriSpec<"RestJson", "HttpQueryParamsOnlyOperation">(
+      "GET",
+      [{ type: "path_literal", value: "http-query-params-only" }],
+      [],
+      { service: "RestJson", operation: "HttpQueryParamsOnlyOperation" }
+    ),
+  ]);
+  return new HttpQueryParamsOnlyOperationHandler(
+    operation,
+    mux,
+    new HttpQueryParamsOnlyOperationSerializer(),
+    serializeFrameworkException,
+    customizer
+  );
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class HttpQueryParamsOnlyOperationHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<
+    HttpQueryParamsOnlyOperationServerInput,
+    HttpQueryParamsOnlyOperationServerOutput,
+    Context
+  >;
+  private readonly mux: __Mux<"RestJson", "HttpQueryParamsOnlyOperation">;
+  private readonly serializer: __OperationSerializer<
+    RestJsonService<Context>,
+    "HttpQueryParamsOnlyOperation",
+    HttpQueryParamsOnlyOperationErrors
+  >;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"HttpQueryParamsOnlyOperation">;
+  /**
+   * Construct a HttpQueryParamsOnlyOperation handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for HttpQueryParamsOnlyOperation
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for HttpQueryParamsOnlyOperation that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<HttpQueryParamsOnlyOperationServerInput, HttpQueryParamsOnlyOperationServerOutput, Context>,
+    mux: __Mux<"RestJson", "HttpQueryParamsOnlyOperation">,
+    serializer: __OperationSerializer<
+      RestJsonService<Context>,
+      "HttpQueryParamsOnlyOperation",
+      HttpQueryParamsOnlyOperationErrors
+    >,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"HttpQueryParamsOnlyOperation">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.HttpQueryParamsOnlyOperation. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "HttpQueryParamsOnlyOperation",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      HttpQueryParamsOnlyOperationServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/InputStream.ts b/private/aws-restjson-server/src/server/operations/InputStream.ts
new file mode 100644
index 0000000000000..4c31bb71e1329
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/InputStream.ts
@@ -0,0 +1,174 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { InputStreamInput } from "../../models/models_0";
+import {
+  deserializeInputStreamRequest,
+  serializeFrameworkException,
+  serializeInputStreamResponse,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type InputStream<Context> = __Operation<InputStreamServerInput, InputStreamServerOutput, Context>;
+
+export interface InputStreamServerInput extends InputStreamInput {}
+export namespace InputStreamServerInput {
+  /**
+   * @internal
+   */
+  export const validate: (obj: Parameters<typeof InputStreamInput.validate>[0]) => __ValidationFailure[] =
+    InputStreamInput.validate;
+}
+export interface InputStreamServerOutput {}
+
+export type InputStreamErrors = never;
+
+export class InputStreamSerializer
+  implements __OperationSerializer<RestJsonService<any>, "InputStream", InputStreamErrors>
+{
+  serialize = serializeInputStreamResponse;
+  deserialize = deserializeInputStreamRequest;
+
+  isOperationError(error: any): error is InputStreamErrors {
+    return false;
+  }
+
+  serializeError(error: InputStreamErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    throw error;
+  }
+}
+
+export const getInputStreamHandler = <Context>(
+  operation: __Operation<InputStreamServerInput, InputStreamServerOutput, Context>,
+  customizer: __ValidationCustomizer<"InputStream">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "InputStream">([
+    new httpbinding.UriSpec<"RestJson", "InputStream">("POST", [{ type: "path_literal", value: "InputStream" }], [], {
+      service: "RestJson",
+      operation: "InputStream",
+    }),
+  ]);
+  return new InputStreamHandler(operation, mux, new InputStreamSerializer(), serializeFrameworkException, customizer);
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class InputStreamHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<InputStreamServerInput, InputStreamServerOutput, Context>;
+  private readonly mux: __Mux<"RestJson", "InputStream">;
+  private readonly serializer: __OperationSerializer<RestJsonService<Context>, "InputStream", InputStreamErrors>;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"InputStream">;
+  /**
+   * Construct a InputStream handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for InputStream
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for InputStream that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<InputStreamServerInput, InputStreamServerOutput, Context>,
+    mux: __Mux<"RestJson", "InputStream">,
+    serializer: __OperationSerializer<RestJsonService<Context>, "InputStream", InputStreamErrors>,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"InputStream">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.InputStream. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "InputStream",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      InputStreamServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/InputStreamWithInitialRequest.ts b/private/aws-restjson-server/src/server/operations/InputStreamWithInitialRequest.ts
new file mode 100644
index 0000000000000..ccf01651100f7
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/InputStreamWithInitialRequest.ts
@@ -0,0 +1,204 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { InputStreamWithInitialRequestInput } from "../../models/models_0";
+import {
+  deserializeInputStreamWithInitialRequestRequest,
+  serializeFrameworkException,
+  serializeInputStreamWithInitialRequestResponse,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type InputStreamWithInitialRequest<Context> = __Operation<
+  InputStreamWithInitialRequestServerInput,
+  InputStreamWithInitialRequestServerOutput,
+  Context
+>;
+
+export interface InputStreamWithInitialRequestServerInput extends InputStreamWithInitialRequestInput {}
+export namespace InputStreamWithInitialRequestServerInput {
+  /**
+   * @internal
+   */
+  export const validate: (
+    obj: Parameters<typeof InputStreamWithInitialRequestInput.validate>[0]
+  ) => __ValidationFailure[] = InputStreamWithInitialRequestInput.validate;
+}
+export interface InputStreamWithInitialRequestServerOutput {}
+
+export type InputStreamWithInitialRequestErrors = never;
+
+export class InputStreamWithInitialRequestSerializer
+  implements
+    __OperationSerializer<RestJsonService<any>, "InputStreamWithInitialRequest", InputStreamWithInitialRequestErrors>
+{
+  serialize = serializeInputStreamWithInitialRequestResponse;
+  deserialize = deserializeInputStreamWithInitialRequestRequest;
+
+  isOperationError(error: any): error is InputStreamWithInitialRequestErrors {
+    return false;
+  }
+
+  serializeError(error: InputStreamWithInitialRequestErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    throw error;
+  }
+}
+
+export const getInputStreamWithInitialRequestHandler = <Context>(
+  operation: __Operation<InputStreamWithInitialRequestServerInput, InputStreamWithInitialRequestServerOutput, Context>,
+  customizer: __ValidationCustomizer<"InputStreamWithInitialRequest">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "InputStreamWithInitialRequest">([
+    new httpbinding.UriSpec<"RestJson", "InputStreamWithInitialRequest">(
+      "POST",
+      [{ type: "path_literal", value: "InputStreamWithInitialRequest" }],
+      [],
+      { service: "RestJson", operation: "InputStreamWithInitialRequest" }
+    ),
+  ]);
+  return new InputStreamWithInitialRequestHandler(
+    operation,
+    mux,
+    new InputStreamWithInitialRequestSerializer(),
+    serializeFrameworkException,
+    customizer
+  );
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class InputStreamWithInitialRequestHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<
+    InputStreamWithInitialRequestServerInput,
+    InputStreamWithInitialRequestServerOutput,
+    Context
+  >;
+  private readonly mux: __Mux<"RestJson", "InputStreamWithInitialRequest">;
+  private readonly serializer: __OperationSerializer<
+    RestJsonService<Context>,
+    "InputStreamWithInitialRequest",
+    InputStreamWithInitialRequestErrors
+  >;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"InputStreamWithInitialRequest">;
+  /**
+   * Construct a InputStreamWithInitialRequest handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for InputStreamWithInitialRequest
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for InputStreamWithInitialRequest that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<
+      InputStreamWithInitialRequestServerInput,
+      InputStreamWithInitialRequestServerOutput,
+      Context
+    >,
+    mux: __Mux<"RestJson", "InputStreamWithInitialRequest">,
+    serializer: __OperationSerializer<
+      RestJsonService<Context>,
+      "InputStreamWithInitialRequest",
+      InputStreamWithInitialRequestErrors
+    >,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"InputStreamWithInitialRequest">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.InputStreamWithInitialRequest. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "InputStreamWithInitialRequest",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      InputStreamWithInitialRequestServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/OutputStream.ts b/private/aws-restjson-server/src/server/operations/OutputStream.ts
new file mode 100644
index 0000000000000..4932d71e9f2cc
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/OutputStream.ts
@@ -0,0 +1,184 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __BaseException,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { ServiceUnavailableError } from "../../models/errors";
+import { OutputStreamOutput } from "../../models/models_0";
+import {
+  deserializeOutputStreamRequest,
+  serializeFrameworkException,
+  serializeOutputStreamResponse,
+  serializeServiceUnavailableErrorError,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type OutputStream<Context> = __Operation<OutputStreamServerInput, OutputStreamServerOutput, Context>;
+
+export interface OutputStreamServerInput {}
+export namespace OutputStreamServerInput {
+  /**
+   * @internal
+   */
+  export const validate: () => __ValidationFailure[] = () => [];
+}
+export interface OutputStreamServerOutput extends OutputStreamOutput {}
+
+export type OutputStreamErrors = ServiceUnavailableError;
+
+export class OutputStreamSerializer
+  implements __OperationSerializer<RestJsonService<any>, "OutputStream", OutputStreamErrors>
+{
+  serialize = serializeOutputStreamResponse;
+  deserialize = deserializeOutputStreamRequest;
+
+  isOperationError(error: any): error is OutputStreamErrors {
+    const names: OutputStreamErrors["name"][] = ["ServiceUnavailableError"];
+    return names.includes(error.name);
+  }
+
+  serializeError(error: OutputStreamErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    switch (error.name) {
+      case "ServiceUnavailableError": {
+        return serializeServiceUnavailableErrorError(error, ctx);
+      }
+      default: {
+        throw error;
+      }
+    }
+  }
+}
+
+export const getOutputStreamHandler = <Context>(
+  operation: __Operation<OutputStreamServerInput, OutputStreamServerOutput, Context>,
+  customizer: __ValidationCustomizer<"OutputStream">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "OutputStream">([
+    new httpbinding.UriSpec<"RestJson", "OutputStream">("POST", [{ type: "path_literal", value: "OutputStream" }], [], {
+      service: "RestJson",
+      operation: "OutputStream",
+    }),
+  ]);
+  return new OutputStreamHandler(operation, mux, new OutputStreamSerializer(), serializeFrameworkException, customizer);
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class OutputStreamHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<OutputStreamServerInput, OutputStreamServerOutput, Context>;
+  private readonly mux: __Mux<"RestJson", "OutputStream">;
+  private readonly serializer: __OperationSerializer<RestJsonService<Context>, "OutputStream", OutputStreamErrors>;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"OutputStream">;
+  /**
+   * Construct a OutputStream handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for OutputStream
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for OutputStream that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<OutputStreamServerInput, OutputStreamServerOutput, Context>,
+    mux: __Mux<"RestJson", "OutputStream">,
+    serializer: __OperationSerializer<RestJsonService<Context>, "OutputStream", OutputStreamErrors>,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"OutputStream">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.OutputStream. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "OutputStream",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      OutputStreamServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/OutputStreamWithInitialResponse.ts b/private/aws-restjson-server/src/server/operations/OutputStreamWithInitialResponse.ts
new file mode 100644
index 0000000000000..783f96215286a
--- /dev/null
+++ b/private/aws-restjson-server/src/server/operations/OutputStreamWithInitialResponse.ts
@@ -0,0 +1,210 @@
+// smithy-typescript generated code
+import {
+  httpbinding,
+  InternalFailureException as __InternalFailureException,
+  isFrameworkException as __isFrameworkException,
+  Mux as __Mux,
+  Operation as __Operation,
+  OperationInput as __OperationInput,
+  OperationOutput as __OperationOutput,
+  OperationSerializer as __OperationSerializer,
+  SerializationException as __SerializationException,
+  ServerSerdeContext as __ServerSerdeContext,
+  ServerSerdeContext,
+  ServiceException as __ServiceException,
+  ServiceHandler as __ServiceHandler,
+  SmithyFrameworkException as __SmithyFrameworkException,
+  ValidationCustomizer as __ValidationCustomizer,
+  ValidationFailure as __ValidationFailure,
+} from "@aws-smithy/server-common";
+import { NodeHttpHandler, streamCollector } from "@smithy/node-http-handler";
+import { HttpRequest as __HttpRequest, HttpResponse as __HttpResponse } from "@smithy/protocol-http";
+import { fromBase64, toBase64 } from "@smithy/util-base64";
+import { fromUtf8, toUtf8 } from "@smithy/util-utf8";
+
+import { OutputStreamWithInitialResponseOutput } from "../../models/models_0";
+import {
+  deserializeOutputStreamWithInitialResponseRequest,
+  serializeFrameworkException,
+  serializeOutputStreamWithInitialResponseResponse,
+} from "../../protocols/Aws_restJson1";
+import { RestJsonService } from "../RestJsonService";
+
+export type OutputStreamWithInitialResponse<Context> = __Operation<
+  OutputStreamWithInitialResponseServerInput,
+  OutputStreamWithInitialResponseServerOutput,
+  Context
+>;
+
+export interface OutputStreamWithInitialResponseServerInput {}
+export namespace OutputStreamWithInitialResponseServerInput {
+  /**
+   * @internal
+   */
+  export const validate: () => __ValidationFailure[] = () => [];
+}
+export interface OutputStreamWithInitialResponseServerOutput extends OutputStreamWithInitialResponseOutput {}
+
+export type OutputStreamWithInitialResponseErrors = never;
+
+export class OutputStreamWithInitialResponseSerializer
+  implements
+    __OperationSerializer<
+      RestJsonService<any>,
+      "OutputStreamWithInitialResponse",
+      OutputStreamWithInitialResponseErrors
+    >
+{
+  serialize = serializeOutputStreamWithInitialResponseResponse;
+  deserialize = deserializeOutputStreamWithInitialResponseRequest;
+
+  isOperationError(error: any): error is OutputStreamWithInitialResponseErrors {
+    return false;
+  }
+
+  serializeError(error: OutputStreamWithInitialResponseErrors, ctx: ServerSerdeContext): Promise<__HttpResponse> {
+    throw error;
+  }
+}
+
+export const getOutputStreamWithInitialResponseHandler = <Context>(
+  operation: __Operation<
+    OutputStreamWithInitialResponseServerInput,
+    OutputStreamWithInitialResponseServerOutput,
+    Context
+  >,
+  customizer: __ValidationCustomizer<"OutputStreamWithInitialResponse">
+): __ServiceHandler<Context, __HttpRequest, __HttpResponse> => {
+  const mux = new httpbinding.HttpBindingMux<"RestJson", "OutputStreamWithInitialResponse">([
+    new httpbinding.UriSpec<"RestJson", "OutputStreamWithInitialResponse">(
+      "POST",
+      [{ type: "path_literal", value: "OutputStreamWithInitialResponse" }],
+      [],
+      { service: "RestJson", operation: "OutputStreamWithInitialResponse" }
+    ),
+  ]);
+  return new OutputStreamWithInitialResponseHandler(
+    operation,
+    mux,
+    new OutputStreamWithInitialResponseSerializer(),
+    serializeFrameworkException,
+    customizer
+  );
+};
+
+const serdeContextBase = {
+  base64Encoder: toBase64,
+  base64Decoder: fromBase64,
+  utf8Encoder: toUtf8,
+  utf8Decoder: fromUtf8,
+  streamCollector: streamCollector,
+  requestHandler: new NodeHttpHandler(),
+  disableHostPrefix: true,
+};
+async function handle<S, O extends keyof S & string, Context>(
+  request: __HttpRequest,
+  context: Context,
+  operationName: O,
+  serializer: __OperationSerializer<S, O, __ServiceException>,
+  operation: __Operation<__OperationInput<S[O]>, __OperationOutput<S[O]>, Context>,
+  serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+  validationFn: (input: __OperationInput<S[O]>) => __ValidationFailure[],
+  validationCustomizer: __ValidationCustomizer<O>
+): Promise<__HttpResponse> {
+  let input;
+  try {
+    input = await serializer.deserialize(request, {
+      endpoint: () => Promise.resolve(request),
+      ...serdeContextBase,
+    });
+  } catch (error: unknown) {
+    if (__isFrameworkException(error)) {
+      return serializeFrameworkException(error, serdeContextBase);
+    }
+    return serializeFrameworkException(new __SerializationException(), serdeContextBase);
+  }
+  try {
+    const validationFailures = validationFn(input);
+    if (validationFailures && validationFailures.length > 0) {
+      const validationException = validationCustomizer({ operation: operationName }, validationFailures);
+      if (validationException) {
+        return serializer.serializeError(validationException, serdeContextBase);
+      }
+    }
+    const output = await operation(input, context);
+    return serializer.serialize(output, serdeContextBase);
+  } catch (error: unknown) {
+    if (serializer.isOperationError(error)) {
+      return serializer.serializeError(error, serdeContextBase);
+    }
+    console.log("Received an unexpected error", error);
+    return serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+  }
+}
+export class OutputStreamWithInitialResponseHandler<Context> implements __ServiceHandler<Context> {
+  private readonly operation: __Operation<
+    OutputStreamWithInitialResponseServerInput,
+    OutputStreamWithInitialResponseServerOutput,
+    Context
+  >;
+  private readonly mux: __Mux<"RestJson", "OutputStreamWithInitialResponse">;
+  private readonly serializer: __OperationSerializer<
+    RestJsonService<Context>,
+    "OutputStreamWithInitialResponse",
+    OutputStreamWithInitialResponseErrors
+  >;
+  private readonly serializeFrameworkException: (
+    e: __SmithyFrameworkException,
+    ctx: __ServerSerdeContext
+  ) => Promise<__HttpResponse>;
+  private readonly validationCustomizer: __ValidationCustomizer<"OutputStreamWithInitialResponse">;
+  /**
+   * Construct a OutputStreamWithInitialResponse handler.
+   * @param operation The {@link __Operation} implementation that supplies the business logic for OutputStreamWithInitialResponse
+   * @param mux The {@link __Mux} that verifies which service and operation are being invoked by a given {@link __HttpRequest}
+   * @param serializer An {@link __OperationSerializer} for OutputStreamWithInitialResponse that
+   *                   handles deserialization of requests and serialization of responses
+   * @param serializeFrameworkException A function that can serialize {@link __SmithyFrameworkException}s
+   * @param validationCustomizer A {@link __ValidationCustomizer} for turning validation failures into {@link __SmithyFrameworkException}s
+   */
+  constructor(
+    operation: __Operation<
+      OutputStreamWithInitialResponseServerInput,
+      OutputStreamWithInitialResponseServerOutput,
+      Context
+    >,
+    mux: __Mux<"RestJson", "OutputStreamWithInitialResponse">,
+    serializer: __OperationSerializer<
+      RestJsonService<Context>,
+      "OutputStreamWithInitialResponse",
+      OutputStreamWithInitialResponseErrors
+    >,
+    serializeFrameworkException: (e: __SmithyFrameworkException, ctx: __ServerSerdeContext) => Promise<__HttpResponse>,
+    validationCustomizer: __ValidationCustomizer<"OutputStreamWithInitialResponse">
+  ) {
+    this.operation = operation;
+    this.mux = mux;
+    this.serializer = serializer;
+    this.serializeFrameworkException = serializeFrameworkException;
+    this.validationCustomizer = validationCustomizer;
+  }
+  async handle(request: __HttpRequest, context: Context): Promise<__HttpResponse> {
+    const target = this.mux.match(request);
+    if (target === undefined) {
+      console.log(
+        "Received a request that did not match aws.protocoltests.restjson#RestJson.OutputStreamWithInitialResponse. This indicates a misconfiguration."
+      );
+      return this.serializeFrameworkException(new __InternalFailureException(), serdeContextBase);
+    }
+    return handle(
+      request,
+      context,
+      "OutputStreamWithInitialResponse",
+      this.serializer,
+      this.operation,
+      this.serializeFrameworkException,
+      OutputStreamWithInitialResponseServerInput.validate,
+      this.validationCustomizer
+    );
+  }
+}
diff --git a/private/aws-restjson-server/src/server/operations/index.ts b/private/aws-restjson-server/src/server/operations/index.ts
index 83d314c7260bf..1129d17c4ca4e 100644
--- a/private/aws-restjson-server/src/server/operations/index.ts
+++ b/private/aws-restjson-server/src/server/operations/index.ts
@@ -7,6 +7,9 @@ export * from "./DatetimeOffsets";
 export * from "./DocumentType";
 export * from "./DocumentTypeAsMapValue";
 export * from "./DocumentTypeAsPayload";
+export * from "./DuplexStream";
+export * from "./DuplexStreamWithDistinctStreams";
+export * from "./DuplexStreamWithInitialMessages";
 export * from "./EmptyInputAndEmptyOutput";
 export * from "./EndpointOperation";
 export * from "./EndpointWithHostLabelOperation";
@@ -22,6 +25,7 @@ export * from "./HttpPayloadWithStructure";
 export * from "./HttpPayloadWithUnion";
 export * from "./HttpPrefixHeaders";
 export * from "./HttpPrefixHeadersInResponse";
+export * from "./HttpQueryParamsOnlyOperation";
 export * from "./HttpRequestWithFloatLabels";
 export * from "./HttpRequestWithGreedyLabelInPath";
 export * from "./HttpRequestWithLabels";
@@ -31,6 +35,8 @@ export * from "./HttpResponseCode";
 export * from "./HttpStringPayload";
 export * from "./IgnoreQueryParamsInResponse";
 export * from "./InputAndOutputWithHeaders";
+export * from "./InputStream";
+export * from "./InputStreamWithInitialRequest";
 export * from "./JsonBlobs";
 export * from "./JsonEnums";
 export * from "./JsonIntEnums";
@@ -80,6 +86,8 @@ export * from "./OmitsNullSerializesEmptyString";
 export * from "./OmitsSerializingEmptyLists";
 export * from "./OperationWithDefaults";
 export * from "./OperationWithNestedStructure";
+export * from "./OutputStream";
+export * from "./OutputStreamWithInitialResponse";
 export * from "./PostPlayerAction";
 export * from "./PostUnionWithJsonName";
 export * from "./PutWithContentEncoding";
diff --git a/scripts/generate-clients/config.js b/scripts/generate-clients/config.js
index 486ebf802a15a..4561d927c07d8 100644
--- a/scripts/generate-clients/config.js
+++ b/scripts/generate-clients/config.js
@@ -2,8 +2,8 @@
 module.exports = {
   // Use full commit hash as we explicitly fetch it.
   // Comparison link (update with previous hash):
-  // https://github.com/smithy-lang/smithy-typescript/compare/2cadea188e393e3deab55f5fc4f59d1a4c5da571...7be577c4d67a62cb304470718cc11222c991bcbf
-  SMITHY_TS_COMMIT: "7be577c4d67a62cb304470718cc11222c991bcbf",
+  // https://github.com/smithy-lang/smithy-typescript/compare/7be577c4d67a62cb304470718cc11222c991bcbf...775cd5b119247e544cfa1c51feb89b9e18805725
+  SMITHY_TS_COMMIT: "775cd5b119247e544cfa1c51feb89b9e18805725",
 };
 
 if (module.exports.SMITHY_TS_COMMIT.length < 40) {
diff --git a/yarn.lock b/yarn.lock
index b9fa356cf8e62..089d3abc813d2 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -994,6 +994,8 @@ __metadata:
     "@aws-crypto/sha256-js": "npm:5.2.0"
     "@aws-sdk/core": "npm:*"
     "@aws-sdk/credential-provider-node": "npm:*"
+    "@aws-sdk/eventstream-handler-node": "npm:*"
+    "@aws-sdk/middleware-eventstream": "npm:*"
     "@aws-sdk/middleware-host-header": "npm:*"
     "@aws-sdk/middleware-logger": "npm:*"
     "@aws-sdk/middleware-recursion-detection": "npm:*"
@@ -1005,6 +1007,9 @@ __metadata:
     "@aws-sdk/util-user-agent-node": "npm:*"
     "@smithy/config-resolver": "npm:^4.4.3"
     "@smithy/core": "npm:^3.18.5"
+    "@smithy/eventstream-serde-browser": "npm:^4.2.5"
+    "@smithy/eventstream-serde-config-resolver": "npm:^4.3.5"
+    "@smithy/eventstream-serde-node": "npm:^4.2.5"
     "@smithy/fetch-http-handler": "npm:^5.3.6"
     "@smithy/hash-blob-browser": "npm:^4.2.6"
     "@smithy/hash-node": "npm:^4.2.5"
@@ -1054,6 +1059,8 @@ __metadata:
     "@aws-crypto/sha256-js": "npm:5.2.0"
     "@aws-sdk/core": "npm:*"
     "@aws-sdk/credential-provider-node": "npm:*"
+    "@aws-sdk/eventstream-handler-node": "npm:*"
+    "@aws-sdk/middleware-eventstream": "npm:*"
     "@aws-sdk/middleware-host-header": "npm:*"
     "@aws-sdk/middleware-logger": "npm:*"
     "@aws-sdk/middleware-recursion-detection": "npm:*"
@@ -1065,6 +1072,10 @@ __metadata:
     "@aws-sdk/util-user-agent-node": "npm:*"
     "@smithy/config-resolver": "npm:^4.4.3"
     "@smithy/core": "npm:^3.18.5"
+    "@smithy/eventstream-codec": "npm:^4.2.5"
+    "@smithy/eventstream-serde-browser": "npm:^4.2.5"
+    "@smithy/eventstream-serde-config-resolver": "npm:^4.3.5"
+    "@smithy/eventstream-serde-node": "npm:^4.2.5"
     "@smithy/fetch-http-handler": "npm:^5.3.6"
     "@smithy/hash-blob-browser": "npm:^4.2.6"
     "@smithy/hash-node": "npm:^4.2.5"
@@ -1334,6 +1345,7 @@ __metadata:
     "@aws-sdk/types": "npm:*"
     "@aws-smithy/server-common": "npm:1.0.0-alpha.10"
     "@smithy/config-resolver": "npm:^4.4.3"
+    "@smithy/eventstream-codec": "npm:^4.2.5"
     "@smithy/fetch-http-handler": "npm:^5.3.6"
     "@smithy/hash-node": "npm:^4.2.5"
     "@smithy/invalid-dependency": "npm:^4.2.5"