diff --git a/packages/plugins/openapi/src/rpc-generator.ts b/packages/plugins/openapi/src/rpc-generator.ts
index 7339ef788..c524d9cd1 100644
--- a/packages/plugins/openapi/src/rpc-generator.ts
+++ b/packages/plugins/openapi/src/rpc-generator.ts
@@ -637,18 +637,13 @@ export class RPCOpenAPIGenerator extends OpenAPIGeneratorBase {
 
         schemas['_Meta'] = {
             type: 'object',
+            description: 'Meta information about the request or response',
             properties: {
-                meta: {
-                    type: 'object',
-                    description: 'Meta information about the request or response',
-                    properties: {
-                        serialization: {
-                            description: 'Serialization metadata',
-                        },
-                    },
-                    additionalProperties: true,
+                serialization: {
+                    description: 'Serialization metadata',
                 },
             },
+            additionalProperties: true,
         };
 
         schemas['_Error'] = {
diff --git a/packages/plugins/openapi/tests/baseline/rpc-3.0.0.baseline.yaml b/packages/plugins/openapi/tests/baseline/rpc-3.0.0.baseline.yaml
index 68885daed..81ff8d587 100644
--- a/packages/plugins/openapi/tests/baseline/rpc-3.0.0.baseline.yaml
+++ b/packages/plugins/openapi/tests/baseline/rpc-3.0.0.baseline.yaml
@@ -3212,14 +3212,11 @@ components:
                     nullable: true
         _Meta:
             type: object
+            description: Meta information about the request or response
             properties:
-                meta:
-                    type: object
-                    description: Meta information about the request or response
-                    properties:
-                        serialization:
-                            description: Serialization metadata
-                    additionalProperties: true
+                serialization:
+                    description: Serialization metadata
+            additionalProperties: true
         _Error:
             type: object
             required:
diff --git a/packages/plugins/openapi/tests/baseline/rpc-3.1.0.baseline.yaml b/packages/plugins/openapi/tests/baseline/rpc-3.1.0.baseline.yaml
index 0f36abca2..7665b3070 100644
--- a/packages/plugins/openapi/tests/baseline/rpc-3.1.0.baseline.yaml
+++ b/packages/plugins/openapi/tests/baseline/rpc-3.1.0.baseline.yaml
@@ -3276,14 +3276,11 @@ components:
                         - type: string
         _Meta:
             type: object
+            description: Meta information about the request or response
             properties:
-                meta:
-                    type: object
-                    description: Meta information about the request or response
-                    properties:
-                        serialization:
-                            description: Serialization metadata
-                    additionalProperties: true
+                serialization:
+                    description: Serialization metadata
+            additionalProperties: true
         _Error:
             type: object
             required:
diff --git a/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.0.0.baseline.yaml b/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.0.0.baseline.yaml
index 495ebd42b..01c9a2d0f 100644
--- a/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.0.0.baseline.yaml
+++ b/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.0.0.baseline.yaml
@@ -1861,14 +1861,11 @@ components:
                     nullable: true
         _Meta:
             type: object
+            description: Meta information about the request or response
             properties:
-                meta:
-                    type: object
-                    description: Meta information about the request or response
-                    properties:
-                        serialization:
-                            description: Serialization metadata
-                    additionalProperties: true
+                serialization:
+                    description: Serialization metadata
+            additionalProperties: true
         _Error:
             type: object
             required:
diff --git a/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.1.0.baseline.yaml b/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.1.0.baseline.yaml
index c9327b7f2..3ada4651d 100644
--- a/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.1.0.baseline.yaml
+++ b/packages/plugins/openapi/tests/baseline/rpc-type-coverage-3.1.0.baseline.yaml
@@ -1903,14 +1903,11 @@ components:
                           format: byte
         _Meta:
             type: object
+            description: Meta information about the request or response
             properties:
-                meta:
-                    type: object
-                    description: Meta information about the request or response
-                    properties:
-                        serialization:
-                            description: Serialization metadata
-                    additionalProperties: true
+                serialization:
+                    description: Serialization metadata
+            additionalProperties: true
         _Error:
             type: object
             required: