The Google Calendar API enables custom scheduling applications.
Key Operations
Free/Busy Query: Check when calendar is available.
Events List: Get existing appointments.
Events Insert: Create new appointments.
Events Update: Reschedule appointments.
Events Delete: Cancel appointments.
Authentication
OAuth 2.0 is required for calendar access.
Scopes needed:
- calendar.events (read/write events)
- calendar.readonly (read only)
Building Availability
- Get busy times from free/busy API
- Apply your business hours
- Calculate available slots
- Present to customer
Best Practices
- Cache appropriately
- Handle rate limits
- Validate before booking
- Use service accounts for server-to-server
Bookux
Bookux builds scheduling applications using the Google Calendar API.
Related: Google Calendar Booking Website · Google Calendar OAuth