Google Tag Manager
OAuthAnalyticsOrg connection
Org-level connection
Google Tag Manager is connected once at the org level by an admin. The credential is shared across all groups that have been granted access — individual team members don't need to connect their own accounts.
How to connect
Click "Connect with OAuth" below and sign in with the Google account that has access to your GTM container. You'll be redirected to Google to approve the connection — no credentials to copy or paste.
Ready to connect?
Sign in to On Belay and open the Integrations page to add Google Tag Manager.
Permissions (scopes)
These are the data scopes On Belay can be granted for Google Tag Manager. Your org admin controls which scopes are enabled per group.
| Scope | Description | Access |
|---|---|---|
https://www.googleapis.com/auth/tagmanager.readonly | Read tag configurations | Read only |
Troubleshooting
"redirect_uri_mismatch" error during OAuth
Your OAuth app's authorized redirect URIs don't include the On Belay callback URL. Add
https://app.onbelay.ai/api/oauth-callback/google_tag_manager to the allowed redirect URIs in your OAuth app settings."invalid_scope" error
The API or scope isn't enabled in your cloud project. For Google integrations, make sure the relevant API (e.g. Google Ads API, Search Console API) is enabled in Google Cloud Console for your project.
Connected but Claude can't access data
Check that your group has been granted access to this integration in On Belay → Groups → [your group] → Integrations. Also verify the specific scopes your group is permitted to use match what your query requires.
Still stuck? We're happy to help.
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