gtm_account · Google Tag Manager MCP Server MCP

WHAT IT DOES

What gtm_account does on Google Tag Manager MCP Server

AI agents use gtm_account to create or update resources in Google Tag Manager MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Tag Manager MCP Server environment.

WHY IT NEEDS A POLICY

Why gtm_account needs a policy

While the tool includes read operations (get, list), it explicitly includes "update" which modifies account configuration data. This crosses into Write category. Severity is high because GTM accounts control web analytics and tracking across potentially many properties, and unauthorized updates could alter data collection, analytics, or tracking behavior.

From the tool's definition Tool description states it "Performs all account-related operations: get, list, update." The inclusion of "update" indicates modification of account data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

gtm_account Rate-limited

gtm_account stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "gtm_account": {
      "limits": [
        {
          "counter": "gtm_account_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Google Tag Manager MCP Server, so you can run agents against it safely.

FAQ

Questions about gtm_account

What does the gtm_account tool do? +

Performs all account-related operations: get, list, update. Use the. It is categorised as a Write tool in the Google Tag Manager MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on gtm_account? +

Register the Google Tag Manager MCP Server MCP server in PolicyLayer and add a rule for gtm_account: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Google Tag Manager MCP Server. Nothing to install.

What risk level is gtm_account? +

gtm_account is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit gtm_account? +

Yes. Add a rate_limit block to the gtm_account rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.

How do I block gtm_account completely? +

Set action: deny in the PolicyLayer policy for gtm_account. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.

What MCP server provides gtm_account? +

gtm_account is provided by the Google Tag Manager MCP Server MCP server (metkamedia/gtm-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.