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mcp/harbor
Claude Desktop

Cairn for Claude Desktop

io.github.luckyjackluo/cairn

Local-first file-organization tools for your AI agent: tag, query, and digest a folder. No cloud.

client:Claude Desktop transport:stdio runtime:pypi

Install Cairn in Claude Desktop

~/Library/Application Support/Claude/claude_desktop_config.json · windows: %APPDATA%\Claude\claude_desktop_config.json

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "cairn": {
      "command": "uvx",
      "args": [
        "cairn-mcp-server"
      ],
      "env": {
        "CAIRN_WORKSPACE": "<CAIRN_WORKSPACE>"
      }
    }
  }
}

Settings → Developer → Edit Config opens this file. Restart the app after saving. Claude Desktop docs

Cairn in other clients

Cairn MCP server