CardDAV address books MCP Server: Install & Setup

Install CardDAV address books in Claude Code

npm

Claude Code

claude mcp add carddav-address-books -e CARDDAV_URL=... -- npx -y @ni-c/carddav-mcp

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "carddav-address-books": {
      "command": "npx",
      "args": [
        "-y",
        "@ni-c/carddav-mcp"
      ],
      "env": {
        "CARDDAV_URL": "..."
      }
    }
  }
}

Docker

Claude Code

claude mcp add carddav-address-books -e CARDDAV_URL=... -- docker run -i --rm -e CARDDAV_URL ghcr.io/ni-c/carddav-mcp:0.1.4

mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)

{
  "mcpServers": {
    "carddav-address-books": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "CARDDAV_URL",
        "ghcr.io/ni-c/carddav-mcp:0.1.4"
      ],
      "env": {
        "CARDDAV_URL": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the CardDAV address books MCP server do?

Contacts, groups and photos on any CardDAV server (Radicale, Baikal, Nextcloud, Fastmail, iCloud), with ETag-guarded writes and an address book allowlist.

Is the CardDAV address books MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does CardDAV address books run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add CardDAV address books to Claude Code?

Run: claude mcp add carddav-address-books -e CARDDAV_URL=... -- npx -y @ni-c/carddav-mcp

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