iCloud Calendar MCP

What it does

This MCP server connects your AI assistant to your iCloud Calendar via the CalDAV protocol. It allows the AI to perform full CRUD operations on your calendar, enabling it to schedule meetings, check your availability, and update event details without you leaving your chat interface.

Tools

• list_events: List calendar events within a specific date range (defaults to current month).
• get_event: Retrieve detailed information for a single event using its UID.
• create_event: Create new calendar events with a title, time, description, and location.
• update_event: Modify any field of an existing event by its UID.
• delete_event: Remove an event from the calendar by its UID.

Installation

Add the following to your claude_desktop_config.json:

{
  "mcpServers": {
    "icloud-calendar": {
      "command": "uv",
      "args": [
        "run",
        "--project", "/path/to/icloud-calendar-mcp",
        "fastmcp", "run", "/path/to/icloud-calendar-mcp/server.py"
      ],
      "env": {
        "ICLOUD_USERNAME": "your@icloud.com",
        "ICLOUD_PASSWORD": "app-specific-password",
        "ICLOUD_CALENDAR": "My Calendar"
      }
    }
  }
}

Supported hosts

Confirmed for Claude Code, Claude Desktop, Claude.ai, and any client supporting OAuth MCP servers.