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E-MCP-006

what doctor prints (broken)server.json is invalid JSON
The registry artifact at the repo root does not parse at all, before doctor can even check its schema. check mcp/server-json · error_code E-MCP-006 · doctor exits 1

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What you’re seeing

When your composition opens the MCP door, doctor reads server.json from the repo root and calls JSON.parse on it. This check fires when that parse throws: a stray comma, an unterminated string, a hand-edit that broke the syntax. A project with no MCP door is never graded on a file of that name.

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Why

server.json is meant to be machine-generated and machine-read by MCP registries. A syntax error anywhere in the file means no registry, and no version of vendo doctor, can read any field out of it, not just the one you were editing.

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The fix

Regenerate the file rather than hunting for the broken character:
Or repair the JSON syntax by hand if you have reason to keep manual edits, then re-run doctor.

E-MCP-004

server.json validation

E-MCP-005

server.json remote mismatch

E-MCP-003

server card