MCP server for Google Calendar : create events, manage calendars, check availability, and share calendars through 28 tools via the Model Context Protocol. ## Features - Create, update, and delete calendar events (timed and all-day) - Quick add events from natural language - Manage recurring events with RRULE support - Share calendars with ACL (access control) management - Check availability with free/busy queries - Manage multiple calendars and subscriptions - Full OAuth 2.0 authentication with refresh tokens ## 28 Tools **Events (10)**: List, get, create, update (PUT), patch (PATCH), delete, quick add, move, list instances, import **CalendarList (5)**: List subscribed calendars, get entry, add (subscribe), update display settings, remove (unsubscribe) **Calendars (5)**: Get metadata, create, update, delete, clear all events **ACL (5)**: List rules, get rule, create (share), update permission, delete (revoke) **Utility (3)**: Query free/busy, get color palette, list settings ## Configuration - `GOOGLE_CLIENT_ID` : OAuth 2.0 Client ID from Google Cloud Console - `GOOGLE_CLIENT_SECRET` : OAuth 2.0 Client Secret - `GOOGLE_REFRESH_TOKEN` : Refresh token with Calendar scope