ga4_admin_api_create_annotation

WHAT IT DOES

What ga4_admin_api_create_annotation does on Google Analytics 4 Admin MCP

AI agents use ga4_admin_api_create_annotation to create or update resources in Google Analytics 4 Admin MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Google Analytics 4 Admin MCP environment.

WHY IT NEEDS A POLICY

Why ga4_admin_api_create_annotation needs a policy

The tool creates and stores new annotation data within GA4, which is a reversible modification of metadata. Annotations are interpretive metadata attached to date ranges in GA4 and can be edited or deleted. This is not destructive (annotations can be removed), does not execute arbitrary code, and does not move money. It fits squarely in the Write category.

From the tool's definition Tool name contains 'create_annotation' and description states 'Create a new annotation for a specific Google Analytics 4 property.' This is a create operation that adds new data to a GA4 property.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ga4_admin_api_create_annotation Rate-limited

ga4_admin_api_create_annotation 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": {
    "ga4_admin_api_create_annotation": {
      "limits": [
        {
          "counter": "ga4_admin_api_create_annotation_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 Analytics 4 Admin MCP, so you can run agents against it safely.

FAQ

Questions about ga4_admin_api_create_annotation

What does the ga4_admin_api_create_annotation tool do? +

Create a new annotation for a specific Google Analytics 4 property. It is categorised as a Write tool in the Google Analytics 4 Admin MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ga4_admin_api_create_annotation? +

Register the Google Analytics 4 Admin MCP server in PolicyLayer and add a rule for ga4_admin_api_create_annotation: 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 Analytics 4 Admin MCP. Nothing to install.

What risk level is ga4_admin_api_create_annotation? +

ga4_admin_api_create_annotation is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit ga4_admin_api_create_annotation? +

Yes. Add a rate_limit block to the ga4_admin_api_create_annotation 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 ga4_admin_api_create_annotation completely? +

Set action: deny in the PolicyLayer policy for ga4_admin_api_create_annotation. 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 ga4_admin_api_create_annotation? +

ga4_admin_api_create_annotation is provided by the Google Analytics 4 Admin MCP server (jmchat/mcp-ga4-admin-ts). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.