> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vendo.run/llms.txt
> Use this file to discover all available pages before exploring further.

# E-MCP-008

> Retired: doctor no longer fetches the deployed registry auth challenge.

```text retired theme={null}
E-MCP-008 — retired, doctor no longer emits this code
```

`error_code: E-MCP-008` · `status: retired`

## 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.

## Why

This code fired when the deployed copy of `/.well-known/mcp-registry-auth`
did not start with `v=MCPv1`. Doctor fetched that file from the live origin
over HTTP, and it no longer makes any request.

## The fix

Nothing to do. Doctor still checks the copy in your repo, and that check
reports as [E-MCP-007](/production/troubleshooting/e-mcp-007).

## Related errors

* [E-MCP-007](/production/troubleshooting/e-mcp-007) — the same challenge file, checked on disk
* [E-MCP-004](/production/troubleshooting/e-mcp-004) — `server.json` registry validation, also checked on disk