diff --git a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/CommandGenerator.java b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/CommandGenerator.java
index 97aac632b5e..952645f59ee 100644
--- a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/CommandGenerator.java
+++ b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/CommandGenerator.java
@@ -194,19 +194,21 @@ private void generateEndpointParameterInstructionProvider() {
                         RuleSetParameterFinder parameterFinder = new RuleSetParameterFinder(service);
                         Set<String> paramNames = new HashSet<>();
 
-                        Shape operationInput = model.getShape(operation.getInputShape()).get();
-                        parameterFinder.getStaticContextParamValues(operationInput).forEach((name, value) -> {
+                        parameterFinder.getStaticContextParamValues(operation).forEach((name, value) -> {
                             writer.write(
                                 "$L: { type: \"staticContextParams\", value: $L },",
                                 name, value
                             );
                         });
+
+                        Shape operationInput = model.getShape(operation.getInputShape()).get();
                         parameterFinder.getContextParams(operationInput).forEach((name, type) -> {
                             writer.write(
                                 "$L: { type: \"contextParams\", name: \"$L\" },",
                                 name, name
                             );
                         });
+
                         parameterFinder.getClientContextParams().forEach((name, type) -> {
                             if (!paramNames.contains(name)) {
                                 writer.write(
@@ -216,6 +218,7 @@ private void generateEndpointParameterInstructionProvider() {
                             }
                             paramNames.add(name);
                         });
+
                         parameterFinder.getBuiltInParams().forEach((name, type) -> {
                             if (!paramNames.contains(name)) {
                                 writer.write(
diff --git a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/endpointsV2/RuleSetParameterFinder.java b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/endpointsV2/RuleSetParameterFinder.java
index 3da1217bc5d..eb133c53a07 100644
--- a/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/endpointsV2/RuleSetParameterFinder.java
+++ b/smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/endpointsV2/RuleSetParameterFinder.java
@@ -23,6 +23,7 @@
 import software.amazon.smithy.model.node.ObjectNode;
 import software.amazon.smithy.model.node.StringNode;
 import software.amazon.smithy.model.shapes.MemberShape;
+import software.amazon.smithy.model.shapes.OperationShape;
 import software.amazon.smithy.model.shapes.ServiceShape;
 import software.amazon.smithy.model.shapes.Shape;
 import software.amazon.smithy.rulesengine.traits.ClientContextParamsTrait;
@@ -30,7 +31,6 @@
 import software.amazon.smithy.rulesengine.traits.EndpointRuleSetTrait;
 import software.amazon.smithy.rulesengine.traits.StaticContextParamsTrait;
 
-
 public class RuleSetParameterFinder {
     private final ServiceShape service;
     private final EndpointRuleSetTrait ruleset;
@@ -101,31 +101,27 @@ public Map<String, String> getStaticContextParams(Shape operationInput) {
     /**
      * Get map of params to actual values instead of the value type.
      */
-    public Map<String, String> getStaticContextParamValues(Shape operationInput) {
+    public Map<String, String> getStaticContextParamValues(OperationShape operation) {
         Map<String, String> map = new HashMap<>();
 
-        if (operationInput.isStructureShape()) {
-            operationInput.getAllMembers().forEach((String memberName, MemberShape member) -> {
-                Optional<StaticContextParamsTrait> trait = member.getTrait(StaticContextParamsTrait.class);
-                if (trait.isPresent()) {
-                    StaticContextParamsTrait staticContextParamsTrait = trait.get();
-                    staticContextParamsTrait.getParameters().forEach((name, definition) -> {
-                        String value;
-                        if (definition.getValue().isStringNode()) {
-                            value = "`" + definition.getValue().expectStringNode().toString() + "`";
-                        } else if (definition.getValue().isBooleanNode()) {
-                            value = definition.getValue().expectBooleanNode().toString();
-                        } else {
-                            throw new RuntimeException("unexpected type "
-                                + definition.getValue().getType().toString()
-                                + " received as staticContextParam.");
-                        }
-                        map.put(
-                            name,
-                            value
-                        );
-                    });
+        Optional<StaticContextParamsTrait> trait = operation.getTrait(StaticContextParamsTrait.class);
+        if (trait.isPresent()) {
+            StaticContextParamsTrait staticContextParamsTrait = trait.get();
+            staticContextParamsTrait.getParameters().forEach((name, definition) -> {
+                String value;
+                if (definition.getValue().isStringNode()) {
+                    value = "`" + definition.getValue().expectStringNode().toString() + "`";
+                } else if (definition.getValue().isBooleanNode()) {
+                    value = definition.getValue().expectBooleanNode().toString();
+                } else {
+                    throw new RuntimeException("unexpected type "
+                        + definition.getValue().getType().toString()
+                        + " received as staticContextParam.");
                 }
+                map.put(
+                    name,
+                    value
+                );
             });
         }