plug.directory
Add my server

Install Cairn in Goose

What you need first

  • Goose, installed.
  • Docker, which gives the docker command the server starts with.
  • Your own values for YOUR_CAIRN_DB_HOST,YOUR_CAIRN_DB_PASS.

Steps

  1. Open ~/.config/goose/config.yaml. On Windows it is %APPDATA%\Block\goose\config\config.yaml.
  2. Add this entry. If the file already has extensions, add only the entry inside it.
extensions:
  "cairn-mcp":
    type: stdio
    name: "cairn-mcp"
    enabled: true
    cmd: "docker"
    args: ["run", "-i", "--rm", "-e", "CAIRN_DB_HOST", "-e", "CAIRN_DB_PASS", "ghcr.io/jasondostal/cairn-mcp:0.21.2"]
    env_keys: []
    envs: { "CAIRN_DB_HOST": "YOUR_CAIRN_DB_HOST", "CAIRN_DB_PASS": "YOUR_CAIRN_DB_PASS" }
    timeout: 300
  1. Replace YOUR_CAIRN_DB_HOST,YOUR_CAIRN_DB_PASS with your own values.
  2. Save the file and start a new Goose session.

Check it worked

Ask Goose: List the tools of cairn-mcp.

If it does not start

Cannot connect to the Docker daemon
Docker is not running. Start it, then restart Goose.
The server starts, but its tools fail
A YOUR_… placeholder is still in the config, or its value is wrong.
Nothing changes after a restart
The file is not valid YAML any more. Check that the entry is indented like the lines around it.

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