Google Calendar API

API

REST API for reading and writing Google Calendar events

Price: Free up to 1M requests/day
Access: OAuth 2.0 access token

About

Google's REST API for calendars, events, free/busy data and sharing rules in Google accounts. It suits apps that sync or book events for their users. Users grant access through OAuth, and a project gets 1M free requests a day, with billing above that planned.

What you can do with it

Create, update and cancel events on a user's Google Calendar
Check free/busy times across calendars before booking a slot
Watch calendars for changes and sync events into your app

Get started

Enable the Google Calendar API in a Google Cloud project
Set up the OAuth consent screen and a client ID
Get a user access token with a calendar scope

Example

curl "https://www.googleapis.com/calendar/v3/calendars/primary/events?maxResults=10&singleEvents=true&orderBy=startTime" \
  -H "Authorization: Bearer $GOOGLE_ACCESS_TOKEN"

Details

Hosting: Hosted service
Available in: Worldwide
Official SDKs: Python, JavaScript/TypeScript, Go, Java, C#, PHP, Ruby
MCP server: Remote
Works with: Google Calendar