Google Calendar OAuth for Booking Systems Explained

OAuth lets your booking system access Google Calendar securely.

What OAuth Does

• User authorizes access

• Your app gets tokens

• Tokens allow API calls

• No password sharing

OAuth Flow

1. User clicks "Connect Google Calendar"
2. Redirected to Google
3. User approves access
4. Google redirects back with code
5. Exchange code for tokens
6. Store tokens securely

Token Types

Access token:
Short-lived, used for API calls.

Refresh token:
Long-lived, used to get new access tokens.

Security

• Store tokens encrypted

• Never expose in frontend

• Use minimal scopes

• Handle token refresh

Scopes

Request only what you need:

• calendar.events for full access

• calendar.readonly for read only

Bookux

Bookux implements secure Google Calendar OAuth for booking integrations.

Related: Google Calendar API · Google Calendar Booking Website