Google BigQuery

BigQuery supports managed OAuth2, custom OAuth2, and service-account auth

Use Composio-managed OAuth for the standard connection flow. Use a custom Google OAuth app when you need control over scopes, consent-screen branding, or Google Cloud project policy. Service-account authentication is also available; grant the service account only the BigQuery permissions required by the intended tools.

If Google blocks an OAuth consent flow, check the OAuth app's verification, test-user, organizational-policy, and requested-scope settings before treating the failure as a Composio problem. Generate a fresh auth link after correcting the Google Cloud configuration.