Analyze fill rate and match rate by ad unit to find where you
AI agents call fill_rate_analysis 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 analyzes AdMob performance metrics (fill rate and match rate) by ad unit. It is a read/query operation that surfaces diagnostic insights from existing data. The description is truncated but the context (analysis, reporting) clearly indicates a read-only operation. Misuse potential is low as it only exposes ad performance data.
From the tool's definition 'Analyze fill rate and match rate by ad unit to find where you' — the description indicates analysis/reporting of existing ad performance data with no mention of modification or side effects.
Attacks that exploit this kind of access
Analyze fill rate and match rate by ad unit to find where you. 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 fill_rate_analysis: 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.
fill_rate_analysis 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 fill_rate_analysis 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 fill_rate_analysis. 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.
fill_rate_analysis 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.
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