Google Calendar API

1. Calendar API Overview

   Resources, API concepts, and usage.

2. Events and Calendars

   Calendars, calendar lists, events, and their relationships.

3. Authorization and Scopes

   OAuth 2.0 and Calendar scopes.

4. Creating and Managing Events

   Inserting events, attendees, and updating or patching.

5. Recurring Events

   RRULE recurrence, instances, and exceptions.

6. Event Types

   Default, focus time, out of office, working location, and birthday event types.

7. Synchronizing Resources

   Incremental sync tokens.

8. Push Notifications

   Watch channels and notification handling.

9. Free/Busy and ACLs

   Sharing, access control rules, and availability queries.

10. Quota and Usage Limits

    Per-minute and per-day quotas.

11. Error Handling

    Error codes and exponential backoff.

12. Batch Requests

    Combining multiple API calls into a single request.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.