A developer token from Google allows your app to connect to the Google Ads API. To retrieve your developer token, sign in to your Manager Account. You must be signed-in to a Google Ads Manager Account before continuing.
Navigate to TOOLS & SETTINGS > SETUP > API Center. The API Center option will appear only for Google Ads Manager Accounts.
If your developer token is pending approval, you can start developing immediately with the pending token you received during sign up, using a test manager account.
Your pending developer token must be approved before using it with production Google Ads accounts.