diff --git a/packages/repo-tools/templates/typescript-backstage-server/api.mustache b/packages/repo-tools/templates/typescript-backstage-server/api.mustache
index 9aa2da8293..fd27bb94fa 100644
--- a/packages/repo-tools/templates/typescript-backstage-server/api.mustache
+++ b/packages/repo-tools/templates/typescript-backstage-server/api.mustache
@@ -36,6 +36,7 @@ export type {{#lambda.pascalcase}}{{nickname}}{{/lambda.pascalcase}} = {
         {{/headerParams}}
     },
     {{/hasHeaderParams}}
+    response: {{#responses}} {{{dataType}}}{{^dataType}}void{{/dataType}} {{^-last}} | {{/-last}} {{/responses}}
 }
 {{/operation}}
 
diff --git a/plugins/catalog-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts b/plugins/catalog-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts
index 24a1a1778c..8789eee1f6 100644
--- a/plugins/catalog-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts
+++ b/plugins/catalog-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts
@@ -18,9 +18,19 @@
 // * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY. *
 // ******************************************************************
 import { AnalyzeLocationRequest } from '../models/AnalyzeLocationRequest.model';
+import { AnalyzeLocationResponse } from '../models/AnalyzeLocationResponse.model';
+import { CreateLocation201Response } from '../models/CreateLocation201Response.model';
 import { CreateLocationRequest } from '../models/CreateLocationRequest.model';
+import { EntitiesBatchResponse } from '../models/EntitiesBatchResponse.model';
+import { EntitiesQueryResponse } from '../models/EntitiesQueryResponse.model';
+import { Entity } from '../models/Entity.model';
+import { EntityAncestryResponse } from '../models/EntityAncestryResponse.model';
+import { EntityFacetsResponse } from '../models/EntityFacetsResponse.model';
 import { GetEntitiesByRefsRequest } from '../models/GetEntitiesByRefsRequest.model';
+import { GetLocations200ResponseInner } from '../models/GetLocations200ResponseInner.model';
+import { Location } from '../models/Location.model';
 import { RefreshEntityRequest } from '../models/RefreshEntityRequest.model';
+import { ValidateEntity400Response } from '../models/ValidateEntity400Response.model';
 import { ValidateEntityRequest } from '../models/ValidateEntityRequest.model';
 
 /**
@@ -28,6 +38,7 @@ import { ValidateEntityRequest } from '../models/ValidateEntityRequest.model';
  */
 export type AnalyzeLocation = {
   body: AnalyzeLocationRequest;
+  response: AnalyzeLocationResponse | Error | Error;
 };
 /**
  * @public
@@ -37,6 +48,7 @@ export type CreateLocation = {
   query: {
     dryRun?: string;
   };
+  response: CreateLocation201Response | Error | Error;
 };
 /**
  * @public
@@ -45,6 +57,7 @@ export type DeleteEntityByUid = {
   path: {
     uid: string;
   };
+  response: void | Error | Error;
 };
 /**
  * @public
@@ -53,6 +66,7 @@ export type DeleteLocation = {
   path: {
     id: string;
   };
+  response: void | Error | Error;
 };
 /**
  * @public
@@ -66,6 +80,7 @@ export type GetEntities = {
     after?: string;
     order?: Array<string>;
   };
+  response: Array<Entity> | Error | Error;
 };
 /**
  * @public
@@ -81,6 +96,7 @@ export type GetEntitiesByQuery = {
     fullTextFilterTerm?: string;
     fullTextFilterFields?: Array<string>;
   };
+  response: EntitiesQueryResponse | Error | Error;
 };
 /**
  * @public
@@ -90,6 +106,7 @@ export type GetEntitiesByRefs = {
   query: {
     filter?: Array<string>;
   };
+  response: EntitiesBatchResponse | Error | Error;
 };
 /**
  * @public
@@ -100,6 +117,7 @@ export type GetEntityAncestryByName = {
     namespace: string;
     name: string;
   };
+  response: EntityAncestryResponse | Error | Error;
 };
 /**
  * @public
@@ -110,6 +128,7 @@ export type GetEntityByName = {
     namespace: string;
     name: string;
   };
+  response: Entity | Error | Error;
 };
 /**
  * @public
@@ -118,6 +137,7 @@ export type GetEntityByUid = {
   path: {
     uid: string;
   };
+  response: Entity | Error | Error;
 };
 /**
  * @public
@@ -127,6 +147,7 @@ export type GetEntityFacets = {
     facet: Array<string>;
     filter?: Array<string>;
   };
+  response: EntityFacetsResponse | Error | Error;
 };
 /**
  * @public
@@ -135,6 +156,7 @@ export type GetLocation = {
   path: {
     id: string;
   };
+  response: Location | Error;
 };
 /**
  * @public
@@ -145,22 +167,27 @@ export type GetLocationByEntity = {
     namespace: string;
     name: string;
   };
+  response: Location | Error;
 };
 /**
  * @public
  */
-export type GetLocations = {};
+export type GetLocations = {
+  response: Array<GetLocations200ResponseInner> | Error;
+};
 /**
  * @public
  */
 export type RefreshEntity = {
   body: RefreshEntityRequest;
+  response: void | Error | Error;
 };
 /**
  * @public
  */
 export type ValidateEntity = {
   body: ValidateEntityRequest;
+  response: void | ValidateEntity400Response;
 };
 
 /**
diff --git a/plugins/search-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts b/plugins/search-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts
index 7717873b8e..5d228b9f84 100644
--- a/plugins/search-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts
+++ b/plugins/search-backend/src/schema/openapi/generated/apis/DefaultApi.server.ts
@@ -17,6 +17,7 @@
 // ******************************************************************
 // * THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY. *
 // ******************************************************************
+import { Query200Response } from '../models/Query200Response.model';
 
 /**
  * @public
@@ -29,6 +30,7 @@ export type Query = {
     pageCursor?: string;
     pageLimit?: number;
   };
+  response: Query200Response | Error;
 };
 
 /**