I'm using the official Vercel integration in ChatGPT Work with a Vercel Pro team. The intended team and project are accessible in my Vercel browser, and ChatGPT shows the correct connected email.

Originally, MCP listed my team but could not find a known project. After revoking ChatGPT in Vercel's Sign in with Vercel settings and reconnecting, team listing returns an empty array. Project lookup with the confirmed project/team IDs now returns403: Not authorized: Trying to access resource under scope [TEAM]. You must re-authenticate to this scope or use a token with access to this scope.

Updating/restarting Chrome did not resolve it. I do not remember whether OAuth offered a team selector. ChatGPT's workspace Vercel controls also fail to load; the relationship between the two faults is unknown.

What is the supported way to verify and correct the effective team grant? I have reproducible request IDs that I can provide to verified Vercel staff through an appropriate private channel. The support form directs Vercel MCP cases here.