Google Calendar MCP Server

What is Google Calendar MCP Server?

It is an implementation of the Model Context Protocol (MCP) for Google Calendar that enables interaction with calendar events via CLI or Server-Sent Events (SSE). It is designed for developers and users who want to programmatically manage Google Calendar events through MCP-compatible clients.

How to use Google Calendar MCP Server?

Prerequisites: Node.js 18+, a Google account with Calendar API access, and OAuth 2.0 credentials from Google Cloud Console. Configure environment variables (GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET, GOOGLE_REFRESH_TOKEN, etc.) in a .env file, install dependencies (npm install), and build (npm run build). Run as an HTTP/SSE server (npm run start:http) or as a CLI stdio server (npm run start:stdio). Integrate with MCP clients like Claude Desktop by adding the server configuration to the client's config file.

Key features of Google Calendar MCP Server

• List calendar events within a specified time range
• Create new events with attendees, description, and time
• Update existing events (summary, start/end time)
• Delete events from the calendar
• Find free time slots for a given duration
• Supports both HTTP/SSE and CLI stdio transports

Use cases of Google Calendar MCP Server

• Automate event creation and management from an MCP client
• Check availability and schedule meetings without manual calendar checks
• Integrate Google Calendar into larger workflows via MCP
• Build AI assistants that can read and modify calendar events