Vercel MCP returns 0 teams and 403 for valid team/project

My Vercel account is mlong-6225 / mlong@ssmortgage.net. I am the owner of the BuyerPath team and the BuyerPath team is also my default team.

I am trying to connect Vercel to ChatGPT through Vercel MCP. OAuth completes successfully, but the MCP list_teams call returns zero teams. Attempts to access my project also return 403 Forbidden.

Team ID: team_yxanoQZPnOjdOxb0eVgC50QL Project: buyerpath-mobile-test

I have disconnected and reauthorized the connection multiple times with the same result. Can someone from the Vercel MCP team check why the MCP connection is not receiving access to my team/project?

I can confirm the same issue with the official Vercel plugin in ChatGPT. OAuth completes successfully and my correct team is selected. My Vercel team kezariq-4644 is also my default team. However, Vercel MCP list_teams returns an empty list, and direct access to project kezariq-vercel-test returns 403 Forbidden.

Team ID: team_hqYFYOX74XtJsoE3Ew6ojyo2

Project ID: prj_zJBAuAl3eqkblMqaNNapAN6VjEFy

The Vercel dashboard itself works normally and I can access the team/project in the browser. The problem is specifically MCP/OAuth access from ChatGPT.