Cairn MCP Server

What the code does

We read the source, 22 h ago · rules 3dff92dd89df

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

этот файл ставится пользователю, но в репозитории его нет

        with open(os.path.join(STATIC, name), "rb") as f:

          body:`Permanently delete <b>${esc(p)}</b> and everything tagged with it — ${summary}. This can’t be undone.`,

INDEX_HTML = base64.b64decode("PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KPGhlYWQ+CjxtZXRhIGNoYXJzZXQ9InV0Zi04Ij4KPG1ldGEgbmFtZT0idmlld3BvcnQiIGNvbnRlbnQ9IndpZHRoPWRldmljZS13aWR0aCwgaW5pdGlhbC1zY2FsZT0xIj4KPHRpdGxlPkNhaXJuPC90aXRsZT4KPGxpbmsgcmVsPSJpY29uIiB0eXBlPSJpbWFnZS9zdmcre…

  document.getElementById('app').innerHTML = `
  <div style="flex:1; overflow-y:auto; background:#f5f4ef;">
    <div style="max-width:720px; margin:0 auto; padding:30px 22px 80px;">
      <div style="display:flex; align-items:center; justify-content:space-between; margin-bottom:2…

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

Connect this server

This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.

claude mcp add cairn-mcp -- uvx cairn-mcp

{
  "mcpServers": {
    "cairn-mcp": {
      "args": [
        "cairn-mcp"
      ],
      "command": "uvx"
    }
  }
}

[mcp_servers.cairn-mcp]
command = "uvx"
args = ["cairn-mcp"]

{
  "mcpServers": {
    "cairn-mcp": {
      "args": [
        "cairn-mcp"
      ],
      "command": "uvx"
    }
  }
}

{
  "mcpServers": {
    "cairn-mcp": {
      "args": [
        "cairn-mcp"
      ],
      "command": "uvx"
    }
  }
}

This one needs environment variables set before it will start: CAIRN_TOKEN (Your Cairn API token, copied from the web app account menu. If unset, the server reads it from ~/.cairn_token.), CAIRN_API_URL (Base URL of the Cairn API. Defaults to production.). The author declared them in the registry entry; get the values from the project itself.