DAV

You need three pieces of information: the server base URL (e.g., https://nextcloud.example.com/remote.php/dav), your DAV username, and your password or app-specific password. For Nextcloud, generate an app password under Settings → Security to avoid using your main account password.

Open your Claude Desktop config file and add a dav-mcp entry under mcpServers. Set the three required environment variables: CALDAV_SERVER_URL, CALDAV_USERNAME, and CALDAV_PASSWORD.

{
  "mcpServers": {
    "dav-mcp": {
      "command": "npx",
      "args": ["-y", "dav-mcp"],
      "env": {
        "CALDAV_SERVER_URL": "https://nextcloud.example.com/remote.php/dav",
        "CALDAV_USERNAME": "your_username",
        "CALDAV_PASSWORD": "your_app_password"
      }
    }
  }
}

Google Calendar requires OAuth2 rather than basic auth. Set AUTH_METHOD to 'OAuth' and provide your Google OAuth2 client credentials and a refresh token. Obtain credentials from Google Cloud Console under APIs & Services → Credentials.

{
  "mcpServers": {
    "dav-mcp": {
      "command": "npx",
      "args": ["-y", "dav-mcp"],
      "env": {
        "AUTH_METHOD": "OAuth",
        "GOOGLE_USER": "[email protected]",
        "GOOGLE_CLIENT_ID": "your_client_id.apps.googleusercontent.com",
        "GOOGLE_CLIENT_SECRET": "your_client_secret",
        "GOOGLE_REFRESH_TOKEN": "your_refresh_token"
      }
    }
  }
}

Quit and reopen Claude Desktop. Ask Claude to list your calendars. It should call list_calendars and return the calendar names from your DAV server. If you see calendars listed, the connection is working.

If you want to use dav-mcp with n8n or a web-based MCP client, start it in HTTP server mode. The server binds to a port and accepts HTTP/SSE connections instead of stdio.

CALDAV_SERVER_URL=https://dav.example.com \
CALDAV_USERNAME=user \
CALDAV_PASSWORD=pass \
BEARER_TOKEN=mysecrettoken \
npx dav-mcp --http --port=8080