Google Apps

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Steps

1. Create a Google Cloud Project (if needed)
   • Go to https://console.cloud.google.com
   • Create a new project (or select an existing one)
2. Enable the Required API
   • Navigate to APIs & Services → Library
   • Search for and enable the API you need (e.g., Gmail API, Google Sheets API, Google Calendar API, Google Drive API)
3. Configure the OAuth Consent Screen
   • Go to APIs & Services → OAuth consent screen
   • Click Get Started and follow the wizard:
     • App Information: Enter App Name and user support email
     • Audience: Select Internal (org-only) or External (any Google user)
     • Contact Information: Add developer contact details
     • Review and click Create
4. Create OAuth Client Credentials
   • On the Consent Screen Overview, click Create OAuth Client
   • Configure the client:
     • Application type: Web application
     • Client name: Choose any name
     • Authorized JavaScript origins: Your app’s origin URL
     • Authorized redirect URIs: Your OAuth callback URL
   • Click Create
5. Get Client ID and Client Secret
   • Google will display your Client ID and Client Secret after creation
   • You can also find them later on the Clients page
6. Set App Status
   • Testing Mode: Add specific test users (emails) while developing
   • Production Mode: Set to “In production” for all users (may require Google verification)

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Key Details

• Developer Console: https://console.cloud.google.com
• Auth Type: OAuth 2.0
• Credentials Location: APIs & Services → Credentials → OAuth 2.0 Client IDs
• Common Scopes:
  • Gmail: https://www.googleapis.com/auth/gmail.readonly, https://www.googleapis.com/auth/gmail.send
  • Sheets: https://www.googleapis.com/auth/spreadsheets
  • Calendar: https://www.googleapis.com/auth/calendar
  • Drive: https://www.googleapis.com/auth/drive
• Note: The same OAuth Client can be reused across multiple Google services — just enable additional APIs and add the corresponding scopes