The Vercel MCP connection in ChatGPT returns HTTP 404 when looking up an existing project. The owner account can see that project in the Vercel dashboard. Reconnecting the connection and granting team consent did not resolve it.

Failed request ID: iad1:sfo1:iad1:sfo1::vzn85-1794003402546-5d58c9b2afe0

How can we verify and resolve the ChatGPT OAuth team/project scope or identify another cause of this mismatch? Vercel’s support flow directed this MCP issue to the Community.