ChatGPT–Vercel connector returns 403/404 despite existing authorization

Hello Vercel Support,

My Vercel dashboard shows three projects, but the connected ChatGPT Vercel integration lists only one. Reading another existing project by its exact project ID returns 404. A previous attempt to create a test project returned 403: “You don't have permission to create the project.”

The connected account and team identity were checked. The Vercel “Sign in with Vercel → ChatGPT” permissions page includes “Read and make changes to authorized projects.” A separate Codex session reproduced the one-project list and exact-ID 404.

Could you confirm whether this is a known connector issue, and how to verify which projects the existing authorization actually covers? Please advise the minimum corrective action without granting broader access or disconnecting working integrations unnecessarily.

I can provide project IDs, request IDs and timestamps through a private support channel. No tokens or credentials will be shared.

Vercel Community

ChatGPT Vercel MCP returns 403 Forbidden after successful OAuth authorization

Hi Vercel team, I'm experiencing a persistent authorization issue with the Vercel MCP connector in ChatGPT. The Vercel connector is installed in ChatGPT and...

Thank you.

There's another community post with 404 debugging tips that might be helpful. Please give these solutions a try and let us know how it goes.

https://community.vercel.com/t/debugging-404-errors/437

Vercel Community

Debugging 404 Errors

Sometimes things don’t go as expected when deploying a website. If you see a 404 on your site, that means the page or resource couldn’t be found. There are...

A human should be around soon to offer more advice. But you can also get helpful information quickly by asking v0.

Hello Vercel Support,

I can provide project IDs, request IDs and timestamps through a private support channel. No tokens or credentials will be shared.

Vercel Community

ChatGPT Vercel MCP returns 403 Forbidden after successful OAuth authorization

Hi Vercel team, I'm experiencing a persistent authorization issue with the Vercel MCP connector in ChatGPT. The Vercel connector is installed in ChatGPT and...

Thank you.

There's another community post with 404 debugging tips that might be helpful. Please give these solutions a try and let us know how it goes.

https://community.vercel.com/t/debugging-404-errors/437

Vercel Community

Debugging 404 Errors

Sometimes things don’t go as expected when deploying a website. If you see a 404 on your site, that means the page or resource couldn’t be found. There are...

A human should be around soon to offer more advice. But you can also get helpful information quickly by asking v0.