What It Does

This recipe gives an LLM agent full read/write access to your Google Calendar through a Model Context Protocol (MCP) server. You type things like “move my 3pm to tomorrow” or “find a free 30-minute slot Thursday afternoon and invite Sam” and the agent performs the CRUD operation directly. The open-source server (nspady/google-calendar-mcp) also supports natural-language understanding of dates/times and “intelligent import” — adding events parsed from images, PDFs, or web links.

The Stack

• Google Calendar MCP server — the nspady/google-calendar-mcp server exposes calendar create / read / update / delete plus smart scheduling and import as MCP tools.
• An MCP host — Claude Desktop, Cursor, or any MCP-capable client connects to the server; no custom UI needed.
• An LLM — any MCP-capable model, e.g. via the Anthropic Startup Program credits or a free tool-calling model from GitHub Models.
• Google OAuth — a Google Cloud project with the Calendar API enabled and OAuth credentials.

Step-by-Step Outline

1. Enable the API — create a Google Cloud project, enable the Calendar API, and generate OAuth client credentials.
2. Run the MCP server — install and start nspady/google-calendar-mcp, completing the OAuth consent flow so it can act on your calendar.
3. Register the server in your MCP host’s config (Claude Desktop / Cursor) so its calendar tools appear to the agent.
4. Drive it in natural language — create events, check availability, and manage invites by chatting; try the image/PDF import for pasting in event details.
5. Add guardrails — keep destructive operations (delete, mass-invite) behind a confirmation step in your host.

Source

nspady/google-calendar-mcp — Google Calendar MCP Server (Awesome MCP Servers listing)