Overview

Google Calendar MCP Server is a community-developed Model Context Protocol (MCP) server that integrates Google Calendar with AI assistants. It allows Large Language Models (such as Claude Desktop, Cursor, and others) to interact with your Google Calendar using natural language commands.

Multiple high-quality implementations exist. The most referenced one is nspady/google-calendar-mcp, which offers robust features including multi-account support. Other notable versions include Python-based (deciduus/calendar-mcp), TypeScript-based (thisnick/google-calendar-mcp, Jackson88/google-calendar-mcp), and variants with auto-authentication (falgom4/calendar-mcp).

Key Features

Event Management: List events, create new events, update or delete existing ones.
Availability Checking: Query free/busy times across calendars.
Natural Language Scheduling: "Schedule a 1-hour meeting with John next Tuesday at 2pm" or "Find free slots for a team sync this week".
Multi-Account Support: Connect and manage multiple Google accounts simultaneously (in supported implementations).
Secure OAuth2 Authentication: Standard Google API integration with proper consent flow.
Additional Tools: Recurring events, reminders, attendee management, and calendar summaries.
MCP Client Compatibility: Works with Claude Desktop, Cursor, Gemini CLI, and any compliant MCP tool.

Use Cases

Smart Scheduling: Let AI find optimal meeting times and automatically create events with all details.
Daily Planning: "Summarize my schedule for today and suggest time blocks for deep work."
Automated Reminders & Follow-ups: Create events with attendees and send confirmations.
Availability Coordination: Check team availability and propose meeting slots.
Productivity Workflows: Combine with Gmail MCP, Tasks, or other tools for complete AI-orchestrated personal and team productivity.

Installation & Setup (nspady/google-calendar-mcp)

Prerequisites

Google Cloud Project with Google Calendar API enabled.
OAuth2 credentials (client ID and secret).

Installation Options

Local Installation:

git clone https://github.com/nspady/google-calendar-mcp.git
cd google-calendar-mcp
# Follow README for dependency installation and credential setup

Docker Installation: Available for easier deployment.

Authentication

On first run, the AI assistant (e.g., Claude) can trigger the authentication flow. Some variants offer simplified or auto-authentication methods.

Configure the MCP server URL/port in your AI client's settings (Claude Desktop config.json, Cursor, etc.).

Popular Alternatives

deciduus/calendar-mcp: Clean Python implementation.
thisnick/google-calendar-mcp & Jackson88/google-calendar-mcp: TypeScript versions.
falgom4/calendar-mcp: Auto-authentication focused.
guinacio/mcp-google-calendar: Part of broader Google Workspace integrations.

Many users pair Google Calendar MCP with Gmail MCP for unified email + calendar automation.

Compatibility & Security

Clients: Claude Desktop, Cursor, and most MCP-compatible AI tools.
Authentication: OAuth2 (recommended for security). Always review scopes and use least-privilege access.
License: Open-source (check specific repository for details).

Google Calendar MCP servers transform your calendar into a conversational interface, significantly boosting productivity while requiring careful handling of authentication credentials.