How to integrate Google Calendar in Bubble

You integrate Google Calendar in Bubble by creating an OAuth2 connection in the API Connector, letting the user sign in with their Google account, storing their access token, and then calling Google Calendar endpoints (like creating events) through backend workflows. Bubble does not have a native Google Calendar plugin that handles OAuth correctly for production, so you must set it up manually using the API Connector.

What You Actually Need To Do

You’ll connect Bubble → Google OAuth2 → Get user’s permission → Use access token to read/write calendar events. OAuth2 is just a secure way for Google to give Bubble permission on behalf of the user.

• Create a Google Cloud project
• Enable the Calendar API
• Set up OAuth credentials
• Configure API Connector with OAuth2 User-Agent Flow
• Use API calls in backend workflows to add/read events

Create OAuth Credentials in Google Cloud

• Go to console.cloud.google.com
• Enable Google Calendar API
• Create OAuth2 Credentials → Choose Web Application
• Add authorized redirect URI: https://yourapp.bubbleapps.io/api/1.1/oauth\_redirect

Copy your Client ID and Client Secret.

Set Up API Connector in Bubble

Create a new API:

• Authentication type: OAuth2 User-Agent Flow
• Auth URL: https://accounts.google.com/o/oauth2/v2/auth
• Token URL: https://oauth2.googleapis.com/token
• Scope: https://www.googleapis.com/auth/calendar.events
• Client ID + Secret: from Google Cloud

Initialize OAuth by clicking Sign in with Google inside API Connector.

Example API Call: Create Event

{
  "summary": "Test Event",
  "start": {
    "dateTime": "2025-02-01T10:00:00-05:00"
  },
  "end": {
    "dateTime": "2025-02-01T11:00:00-05:00"
  }
}

Endpoint URL (POST): https://www.googleapis.com/calendar/v3/calendars/primary/events

In API Connector set content-type as application/json.

Use It in Bubble Workflows

• Trigger a workflow → "Sign the user up / log the user in with a social network" → Choose your Google OAuth
• Run the "Create Event" API workflow after user authorizes
• Store returned event IDs inside a Bubble thing if you want to edit/delete them later

This gives you full Google Calendar integration that works reliably in live apps.