🧬 Module 3: Connecting Google APIs in n8n

🧬 Module 3: Connecting Google APIs in n8n

Learn how to connect n8n to your Google account using OAuth2 and set up access to key services (Sheets, Gmail, Drive, Calendar, BigQuery, YouTube) for future automation workflows.

1. What is OAuth2?

• A secure way to allow apps like n8n to access your Google data.

• Instead of entering your password, you allow access via “scopes”.

2. Set up Google Cloud Project

1. Go to https://console.cloud.google.com

2. Create new project

3. Go to API & Services → OAuth Consent Screen

   • Set up External

   • Add Test Users

4. Enable APIs:

   • Google Sheets API

   • Gmail API

   • Google Drive API

   • Calendar API

   • BigQuery API

   • YouTube Data API v3

5. Go to Credentials → Set OAuth Screen → Create Credentials → OAuth Client ID

   • Application type: Web application

   • Add redirect URI from n8n (e.g., http://localhost:5678/rest/oauth2-credential/callback)

6. Copy Client ID and Client Secret

7. Got to Audience and add your email as User

8. Got to Data Access and Add Scopes

https://www.googleapis.com/auth/spreadsheets

https://mail.google.com/

https://www.googleapis.com/auth/drive

https://www.googleapis.com/auth/calendar

https://www.googleapis.com/auth/bigquery

https://www.googleapis.com/auth/youtube

3. Connect to n8n

• In n8n, go to Credentials → Google

• Choose OAuth2 API

• Paste Client ID and Secret

• Click “Connect” and log in to your Google Account