Get details of a specific custom dimension in a Google Analytics 4 property.
AI agents call ga4_admin_api_get_custom_dimension to retrieve information from Google Analytics 4 Admin MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves configuration metadata about a custom dimension in GA4. It queries existing data without creating, modifying, or deleting anything. The blast radius of misuse is minimal: an attacker gaining access would learn dimension definitions but could not alter analytics configuration, delete data, or affect business operations. It is a pure read operation.
From the tool's definition Tool name contains 'get' and description states 'Get details of a specific custom dimension' — a retrieval operation with no side effects.
Attacks that exploit this kind of access
Get details of a specific custom dimension in a Google Analytics 4 property. It is categorised as a Read tool in the Google Analytics 4 Admin MCP MCP Server, which means it retrieves data without modifying state.
Register the Google Analytics 4 Admin MCP server in PolicyLayer and add a rule for ga4_admin_api_get_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.
ga4_admin_api_get_custom_dimension is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the ga4_admin_api_get_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.
Set action: deny in the PolicyLayer policy for ga4_admin_api_get_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.
ga4_admin_api_get_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.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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