diff --git a/src/es/apis/bulk.ts b/src/es/apis/bulk.ts
index d3869026..7201bc3b 100644
--- a/src/es/apis/bulk.ts
+++ b/src/es/apis/bulk.ts
@@ -4,21 +4,26 @@
  */
 
 /*
- * This file was auto generated by elastic/elastic-client-generator-js.
- * DO NOT MODIFY IT BY HAND. Instead, modify the source open API file,
+ * This file was automatically generated by elastic/elastic-client-generator-js.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source open api file,
  * and elastic/elastic-client-generator-js to regenerate this file again.
  */
 
+import { z } from 'zod'
 import { BulkRequest } from './schemas/_global.ts'
 import type { EsApiDefinition } from '../types.ts'
 
+const BulkRequestPassthrough = BulkRequest.extend({
+  operations: z.array(z.any()).optional().meta({ found_in: 'body' })
+})
+
 export const bulkApis: EsApiDefinition[] = [
-  {
-    name: 'bulk',
-    description: 'Bulk index or delete documents.',
-    method: 'POST',
-    path: '/{index}/_bulk',
-    input: BulkRequest,
-    bodyFormat: 'ndjson'
-  }
+ {
+  name: "bulk",
+  description: "Bulk index or delete documents.",
+  method: "POST",
+  path: "/{index}/_bulk",
+  input: BulkRequestPassthrough,
+  bodyFormat: 'ndjson',
+ },
 ]
diff --git a/src/es/apis/msearch.ts b/src/es/apis/msearch.ts
index 356a6508..d4d5c87b 100644
--- a/src/es/apis/msearch.ts
+++ b/src/es/apis/msearch.ts
@@ -4,21 +4,26 @@
  */
 
 /*
- * This file was auto generated by elastic/elastic-client-generator-js.
- * DO NOT MODIFY IT BY HAND. Instead, modify the source open API file,
+ * This file was automatically generated by elastic/elastic-client-generator-js.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source open api file,
  * and elastic/elastic-client-generator-js to regenerate this file again.
  */
 
+import { z } from 'zod'
 import { MsearchRequest } from './schemas/_global.ts'
 import type { EsApiDefinition } from '../types.ts'
 
+const MsearchRequestPassthrough = MsearchRequest.extend({
+  searches: z.array(z.any()).optional().meta({ found_in: 'body' })
+})
+
 export const msearchApis: EsApiDefinition[] = [
-  {
-    name: 'msearch',
-    description: 'Run multiple searches.',
-    method: 'GET',
-    path: '/{index}/_msearch',
-    input: MsearchRequest,
-    bodyFormat: 'ndjson'
-  }
+ {
+  name: "msearch",
+  description: "Run multiple searches.",
+  method: "GET",
+  path: "/{index}/_msearch",
+  input: MsearchRequestPassthrough,
+  bodyFormat: 'ndjson',
+ },
 ]
diff --git a/src/es/apis/msearch_template.ts b/src/es/apis/msearch_template.ts
index fcf2dada..b864aef6 100644
--- a/src/es/apis/msearch_template.ts
+++ b/src/es/apis/msearch_template.ts
@@ -4,21 +4,26 @@
  */
 
 /*
- * This file was auto generated by elastic/elastic-client-generator-js.
- * DO NOT MODIFY IT BY HAND. Instead, modify the source open API file,
+ * This file was automatically generated by elastic/elastic-client-generator-js.
+ * DO NOT MODIFY IT BY HAND. Instead, modify the source open api file,
  * and elastic/elastic-client-generator-js to regenerate this file again.
  */
 
+import { z } from 'zod'
 import { MsearchTemplateRequest } from './schemas/_global.ts'
 import type { EsApiDefinition } from '../types.ts'
 
+const MsearchTemplateRequestPassthrough = MsearchTemplateRequest.extend({
+  search_templates: z.array(z.any()).optional().meta({ found_in: 'body' })
+})
+
 export const msearchTemplateApis: EsApiDefinition[] = [
-  {
-    name: 'msearch-template',
-    description: 'Run multiple templated searches.',
-    method: 'GET',
-    path: '/{index}/_msearch/template',
-    input: MsearchTemplateRequest,
-    bodyFormat: 'ndjson'
-  }
+ {
+  name: "msearch-template",
+  description: "Run multiple templated searches.",
+  method: "GET",
+  path: "/{index}/_msearch/template",
+  input: MsearchTemplateRequestPassthrough,
+  bodyFormat: 'ndjson',
+ },
 ]