io.github.jasondostal/cairn-mcp

Cairn

Is the Cairn MCP server down? It gave no valid answer in the probe of 2026-11-11: crashed on start. One failed probe is not an outage.

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crashed on start no valid answer since 2026-11-11 · probed 2026-11-15 · unchanged since 2026-11-11

MCP error -32000: Connection closed
    self._pool.wait()
  File "/usr/local/lib/python3.11/site-packages/psycopg_pool/pool.py", line 159, in wait
    raise Poo

Run it: docker run -i --rm ghcr.io/jasondostal/cairn-mcp:0.21.2 (stdio, probed in a container with the network off)
Host: ghcr.io
Repository: https://github.com/jasondostal/cairn-mcp
Registry: active, updated 2026-02-11 · registry entry

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Badge for the README

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

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A mail when this server changes

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.

For the publisher

The package did not start as an MCP server at its probe on 2026-11-11. One failed probe is not an outage: the board calls a package down when it fails again at its next probe, a week later.
The process exited on start before it answered initialize. The error output is above.