Gatekeeper (https://www.station70.com/gatekeeper/) is a hosted MCP Gateway. Users connect remote MCP servers from https://app.gatekeeper.station70.com/services so their credentials stay secured.

Connecting Vercel MCP (https://mcp.vercel.com) fails OAuth with invalid_redirect_uri: the provided redirect URIs are not approved for use by this authorization server.

Please allowlist our redirect URIs (or issue an approved MCP client_id):

• Client name: Gatekeeper
• Website: https://www.station70.com/gatekeeper/
• redirect_uris:
  • https://callback.gw.gatekeeper.sandbox.station70.com/downstream/vercel/callback
  • https://callback.gw.gatekeeper.station70.com/downstream/vercel/callback
• Flow: PKCE
• Resource: https://mcp.vercel.com

Gatekeeper already connects other remote MCP providers via standard OAuth / DCR. Vercel’s reviewed-client allowlist is the only blocker. Docs: https://vercel.com/docs/agent-resources/vercel-mcp

Happy to complete any client security review. Thank you.