Google Calendar MCP server

This MCP Google Calendar Server enables AI assistants like Claude to create and manage Google Calendar events through the Model Context Protocol. It provides a seamless interface between AI systems and Google Calendar, allowing for automated event creation and management.

Prerequisites

• Node.js v18 or later
• Google Cloud Console project with Calendar API enabled
• OAuth2 credentials (Client ID and Client Secret)

Installation

Clone and Set Up the Repository

1. Clone the repository and navigate to the project directory:

git clone https://github.com/markelaugust74/mcp-google-calendar.git
cd mcp-google-calendar

2. Install the required dependencies:

npm install

Configure OAuth2 Authentication

1. Create an environment file with your Google OAuth2 credentials:

cp .env.example .env

2. Edit the .env file to add your Google OAuth2 credentials (Client ID and Client Secret)

3. Generate your refresh token by running:

npm run auth

4. Update the refresh token in the index.js file

Running the Server

Start the MCP Google Calendar Server with:

npm start

Features

Supported Calendar Operations

• Create Events: Add new calendar events with title, description, start and end times
• Add Attendees: Include other participants in calendar events
• OAuth Authentication: Secure connection to Google Calendar API
• Debug Logging: Troubleshoot issues with detailed logs

Using with AI Assistants

When properly configured, this server allows AI assistants to:

• Create calendar appointments
• Schedule meetings with attendees
• Manage event details
• Interact with Google Calendar using natural language requests

The server implements the full Model Context Protocol, making it compatible with AI systems that support MCP.

How to install this MCP server

For Claude Code

To add this MCP server to Claude Code, run this command in your terminal:

claude mcp add-json "mcp-google-calendar" '{"command":"npx","args":["mcp-google-calendar"]}'

See the official Claude Code MCP documentation for more details.

For Cursor

There are two ways to add an MCP server to Cursor. The most common way is to add the server globally in the ~/.cursor/mcp.json file so that it is available in all of your projects.

If you only need the server in a single project, you can add it to the project instead by creating or adding it to the .cursor/mcp.json file.

Adding an MCP server to Cursor globally

To add a global MCP server go to Cursor Settings > Tools & Integrations and click "New MCP Server".

When you click that button the ~/.cursor/mcp.json file will be opened and you can add your server like this:

{
    "mcpServers": {
        "mcp-google-calendar": {
            "command": "npx",
            "args": [
                "mcp-google-calendar"
            ]
        }
    }
}

Adding an MCP server to a project

To add an MCP server to a project you can create a new .cursor/mcp.json file or add it to the existing one. This will look exactly the same as the global MCP server example above.

How to use the MCP server

Once the server is installed, you might need to head back to Settings > MCP and click the refresh button.

The Cursor agent will then be able to see the available tools the added MCP server has available and will call them when it needs to.

You can also explicitly ask the agent to use the tool by mentioning the tool name and describing what the function does.

For Claude Desktop

To add this MCP server to Claude Desktop:

1. Find your configuration file:

• macOS: ~/Library/Application Support/Claude/claude_desktop_config.json
• Windows: %APPDATA%\Claude\claude_desktop_config.json
• Linux: ~/.config/Claude/claude_desktop_config.json

2. Add this to your configuration file:

{
    "mcpServers": {
        "mcp-google-calendar": {
            "command": "npx",
            "args": [
                "mcp-google-calendar"
            ]
        }
    }
}

3. Restart Claude Desktop for the changes to take effect