Not able to add ChatGPT App/MCP Server to ChatGPT

GPT builders
1

I am developing a ChatGPT App using the ChatGPT Apps SDK. I previously added my MCP server without issues, but I can no longer add it.

When attempting to add the MCP server, no error message appears. On the server side, I can see requests coming from OpenAI:

POST /mcp → 200 OK
POST /mcp → 200 OK
POST /mcp → 202 Accepted
POST /mcp → 200 OK
POST /mcp → 200 OK
GET /.well-known/openid-configuration → 404
GET /.well-known/oauth-authorization-server → 404
GET /mcp/.well-known/openid-configuration → 404
GET /.well-known/openid-configuration/mcp → 404
GET /.well-known/oauth-authorization-server/mcp → 404
GET /.well-known/oauth-protected-resource → 404
GET /.well-known/oauth-protected-resource/mcp → 404
GET / → 404

After these requests, the interface returns to the Apps & Connectors menu, and my app does not appear. I also cannot use the “+” button to add the app/MCP server to a chat.

I tested the same MCP server using a ChatGPT Business account, and it successfully adds. However, the Business account cannot render widgets, so I cannot continue development.

This issue is blocking my development. Any guidance or fixes would be appreciated.

Thank you.
Jake

5 Likes
2

Plus 1 - these kind of issues are cropping up overnight repeatedly

1 Like
3

Same - all my previous connectors have dissapeared and unable to create any new connectors

4

Any solutions to this? I’m having the problem now.

5

Same thing, and no way to debug.

6

Hi everyone! Sorry we missed this. Are you all still blocked here?

1 Like
7

same problem in free versions of chatgpt but no problem in plus version.
in free version after saving the mcp connector nothing happens, and we can see the request with 200 response in our server log