diff --git a/libraries/nestjs-libraries/src/chat/start.mcp.ts b/libraries/nestjs-libraries/src/chat/start.mcp.ts
index 6f8afd0f..3b4d4b42 100644
--- a/libraries/nestjs-libraries/src/chat/start.mcp.ts
+++ b/libraries/nestjs-libraries/src/chat/start.mcp.ts
@@ -115,6 +115,7 @@ export const startMcp = async (app: INestApplication) => {
           sessionIdGenerator: () => {
             return randomUUID();
           },
+          enableJsonResponse: true,
         },
         req,
         res,