Show eCPM trends over time, optionally broken down by ad unit. Use for:
AI agents call ecpm_trend to retrieve information from AdMob MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays historical eCPM (effective cost per mille) metrics and trends from AdMob. It performs read-only queries on existing data without creating, modifying, or deleting any records. The blast radius of misuse is minimal—worst case an agent queries sensitive revenue data unnecessarily, but causes no system changes or financial impact.
From the tool's definition The tool description states it will 'Show eCPM trends over time' and is used for analyzing and viewing performance data. The verb 'Show' indicates data retrieval with no modification.
Attacks that exploit this kind of access
Show eCPM trends over time, optionally broken down by ad unit. Use for:. It is categorised as a Read tool in the AdMob MCP Server MCP Server, which means it retrieves data without modifying state.
Register the AdMob MCP Server MCP server in PolicyLayer and add a rule for ecpm_trend: 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 AdMob MCP Server. Nothing to install.
ecpm_trend 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 ecpm_trend 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 ecpm_trend. 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.
ecpm_trend is provided by the AdMob MCP Server MCP server (willhou/admob-mcp). 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.
Teams ship this data inside their own products. See what a licence covers →