Data & Storage · Integration
Google Tag Manager
Add Google Tag Manager to your product for your customers, and give your AI agents governed access to it.
Embed a Google Tag Manager integration so your customers can have your product manage their own containers instead of pasting snippets by hand. Every container is configured differently, so account, container, and workspace mapping is configuration per customer rather than code. fastn handles per-customer OAuth, pagination, and API upkeep, and reads are throttled so a bulk audit does not exhaust a customer's API allowance.
In your product
Embedded for your customers. Per-tenant auth, no per-customer code, maintained by fastn.
Let customers connect their own container so your product can add the tag it needs without a developer ticket.
Read the tags, triggers, and variables in a workspace so your product shows what is already configured.
Create or update a tag in a workspace and publish a container version once the customer approves it.
List accounts and containers so a customer picks the right one during onboarding.
For your AI agents
Governed, audited access for the agents you build, through the MCP server.
An agent audits which tags and triggers exist in a container before recommending a change.
An agent creates or updates a tag within governed permissions, with each change logged.
An agent compares container versions to explain what changed and when.
Example prompt
List every tag in this container with no trigger attached, then summarise what changed in the last published version.
Set up Google Tag Manager in 4 steps
- 01Open the Google Tag Manager connector from your fastn dashboard.
- 02Have each customer authorise their own Google Tag Manager account with OAuth.
- 03Map the accounts, containers, and workspaces your product uses, then enable actions.
- 04Call them from your product, or expose them to an agent through the MCP server.
Why teams use the Google Tag Manager integration
What you get by embedding it with fastn instead of building it yourself.
- Ship a Google Tag Manager integration without building it. Your customers connect their own GTM account inside your product and work their containers, tags, triggers and variables there, with no per-customer code on your side.
- Handle the part that actually costs time: a container change is published to a live site, so the version and publish steps matter more than the edit. fastn owns the auth, token refresh and API upkeep.
- One integration serves your product and your agents. The same governed GTM connection powers in-product features and gives AI agents scoped, audited access, so a published container version is attributable to whoever caused it.
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How do I add a Google Tag Manager integration to my product?
Enable the Google Tag Manager connector in your fastn dashboard, then let each customer authenticate their own Google Tag Manager account. fastn handles the OAuth flow, token storage and refresh per tenant, so there is no Google Tag Manager client code in your app and no per-customer branch in your codebase. Setup is 4 steps.
Do my customers each connect their own Google Tag Manager account?
Yes. Every connection is scoped to the individual customer, so each authorises their own Google Tag Manager account and only ever sees their own records, datasets and fields. That per-tenant isolation is the point of an embedded integration: you support the long tail of customer setups without maintaining an integration per customer.
Can AI agents use this Google Tag Manager integration?
Yes. The same connection is exposed to your agents through the fastn MCP gateway, with permissions scoped per tenant and every call audited. An agent audits which tags and triggers exist in a container before recommending a change.
Who maintains the Google Tag Manager integration?
fastn does. When Google Tag Manager changes an endpoint, deprecates a field or alters its auth, the fix lands in the connector rather than in your backlog, and your customers' connections keep working.
Does a change go live immediately?
Only when a version is published. Edits create a workspace version first, which is the safeguard worth keeping: publishing is what reaches the customer's visitors, so your product should treat it as a deliberate step rather than a side effect of an edit.
What can I build with the Google Tag Manager integration?
A common starting point: connect their own container so your product can add the tag it needs without a developer ticket. Teams also use it for the other use cases listed above, and expose it to agents for governed reads and writes.
How much does the Google Tag Manager integration cost?
It is included. Pricing is based on connected accounts, not on how many connectors you enable, so adding Google Tag Manager does not change your per-connector cost. You can start free with 3 connected accounts.
Add Google Tag Manager to your product
Start free with 3 connected accounts. No sales call required, and no per-customer integration code.