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retired
error_code: E-MCP-001 · status: retired

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What you’re seeing

Nothing: npx vendo doctor cannot print this code anymore. You are reading it from an older run’s output, or a saved report.

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Why

This code fired when the door’s OAuth protected-resource document did not resolve at its well-known path. Doctor fetched that path over HTTP. It now reads files only, so it cannot ask any origin for a document.

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The fix

The document still has to resolve, and you check it yourself now. A door mounted at /api/vendo/mcp serves its metadata at the path-inserted well-known URL, per RFC 9728:
A correct response is JSON with a resource string. If it 404s, confirm createVendo gets mcp: true (or an mcp: {...} object) with a working auth/oauth seam, and that no reverse proxy or catch-all middleware swallows the .well-known route.
  • E-MCP-009 — the door wired without VENDO_BASE_URL, which doctor still catches
  • E-MCP-004 — server.json registry validation, still checked on disk