Provides tools for managing Google Calendar events and calendars, including listing, creating, updating, and deleting events.
Click on "Deploy Server".
Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state.
In the chat, type @ followed by the MCP server name and your instructions, e.g., "@google-calendar-mcp-lib show my events for today"
That's it! The server will respond to your query, and you can continue using it as needed.
Here is a step-by-step guide with screenshots.
A Google Calendar MCP server written in TypeScript. Can be run as a stdio MCP server or used directly as a library with imported functions.
All tools are prefixed with googleCalendar:
Tool | Description |
| List all calendars accessible by the authenticated user |
| List events from a calendar, with optional filters |
| Get a specific event by ID |
| Create a new event |
| Update an existing event |
| Delete an event |
Related MCP server: GoogleCalendarMCP
Every tool accepts optional auth parameters. If not provided, the server falls back to environment variables.
Parameter | Environment variable |
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Only accessToken is required. clientId and clientSecret are needed only if you want the client to auto-refresh expired tokens using the refreshToken.
To obtain credentials, create an OAuth 2.0 client in the Google Cloud Console with the https://www.googleapis.com/auth/calendar scope.
Build and run:
npm install
npm run build
node dist/index.jsOr during development:
npm run devAdd to ~/Library/Application Support/Claude/claude_desktop_config.json:
{
"mcpServers": {
"google-calendar": {
"command": "node",
"args": ["/absolute/path/to/dist/index.js"],
"env": {
"GOOGLE_ACCESS_TOKEN": "ya29.xxx",
"GOOGLE_REFRESH_TOKEN": "1//xxx",
"GOOGLE_CLIENT_ID": "xxx.apps.googleusercontent.com",
"GOOGLE_CLIENT_SECRET": "xxx"
}
}
}
}Import and call functions directly, passing credentials per-call:
import {
googleCalendarListEvents,
googleCalendarCreateEvent,
googleCalendarDeleteEvent,
} from "./dist/api.js";
// List upcoming events
const events = await googleCalendarListEvents({
accessToken: "ya29.xxx",
calendarId: "primary",
timeMin: new Date().toISOString(),
maxResults: 10,
});
// Create an event
const event = await googleCalendarCreateEvent({
accessToken: "ya29.xxx",
summary: "Team standup",
start: { dateTime: "2026-03-10T09:00:00-08:00", timeZone: "America/Los_Angeles" },
end: { dateTime: "2026-03-10T09:30:00-08:00", timeZone: "America/Los_Angeles" },
attendees: [{ email: "colleague@example.com" }],
sendUpdates: "all",
});
// Delete it
await googleCalendarDeleteEvent({
accessToken: "ya29.xxx",
eventId: event.id,
});Or rely on environment variables and omit auth params entirely:
export GOOGLE_ACCESS_TOKEN=ya29.xxxconst calendars = await googleCalendarListCalendars({});npm install # install dependencies
npm run build # compile TypeScript → dist/
npm run dev # run stdio server with tsx (no build step)src/
auth.ts — credential resolution and OAuth2Client factory
calendar.ts — Google Calendar API v3 wrappers
tools.ts — callable functions + Zod input schemas
server.ts — MCP server with all tools registered
api.ts — library entry point (re-exports everything)
index.ts — stdio entry point (bin)This server cannot be deployed
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