2 people reported

All time, since Oct 9.

MCP returns 404 user and 403 team errors after OAuth

“Could engineering investigate the OAuth subject/effective team-grant path?”

Is this your bug? What gets counted gets fixed. Pile on.

Paste this into your agent. It files your report, with your error and version.

I hit this bug: rapsheet.dev/sheets/vercel/issues/10792/file
Follow it to file my report. Show me the text before you send.

No install. No account. Public and anonymous. The link asks your agent for one report, nothing else. What it sends

In Codex, get_auth_user returns "User not found", list_teams is empty, and project lookups get 403 while Vercel CLI works.

Is this your bug?

Where: Vercel MCP server
Error text: 404 not_found: User not found
Versions: 64.0.2
Platforms: macOS, Windows
How bad: Breaks a normal workflow.

Not quite your bug?

MCP log reads return 4032 people
MCP returns 403 and empty teams after successful OAuth60 people
MCP project 404 not_found3 people

Original reports2, newest first

Oct 15, 2026Codex OAuth succeeds, but Vercel MCP returns identity 404 and team 403; CLI reads succeed#50816
Oct 9, 2026Title: Vercel MCP OAuth succeeds in Codex, but returns 404 User not found and 403 team-scope errors#50503

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