ga4_admin_api_create_custom_dimension

WHAT IT DOES

What ga4_admin_api_create_custom_dimension does on Google Analytics 4 Admin MCP

AI agents use ga4_admin_api_create_custom_dimension 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_custom_dimension needs a policy

This tool creates new custom dimensions in GA4, which modifies the property's analytics configuration. Unlike destructive operations (which cannot be undone), custom dimensions can be edited or removed later. Unlike execute operations, it doesn't run arbitrary code or external operations.

From the tool's definition Tool name includes 'create' and description states 'Create a new custom dimension' — this creates and adds new configuration data to GA4 properties.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ga4_admin_api_create_custom_dimension Rate-limited

ga4_admin_api_create_custom_dimension 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_custom_dimension": {
      "limits": [
        {
          "counter": "ga4_admin_api_create_custom_dimension_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_custom_dimension

What does the ga4_admin_api_create_custom_dimension tool do? +

Create a new custom dimension 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_custom_dimension? +

Register the Google Analytics 4 Admin MCP server in PolicyLayer and add a rule for ga4_admin_api_create_custom_dimension: 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_custom_dimension? +

ga4_admin_api_create_custom_dimension 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_custom_dimension? +

Yes. Add a rate_limit block to the ga4_admin_api_create_custom_dimension 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_custom_dimension completely? +

Set action: deny in the PolicyLayer policy for ga4_admin_api_create_custom_dimension. 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_custom_dimension? +

ga4_admin_api_create_custom_dimension 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.