get_library_stats
A read tool on the Metis Public Health MCP server.
This record as markdown: /tools/sveritg-metis-ph/get-library-stats.md
What get_library_stats does on Metis Public Health
AI agents call get_library_stats to retrieve information from Metis Public Health without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why get_library_stats is rated Low
This tool retrieves aggregate statistics from the indexed PDF library without modifying, executing, or deleting any data. It has no side effects and presents no financial, destructive, or execution risks. The blast radius of misuse is minimal—an AI agent could at worst request statistics excessively, but this poses no security or data integrity threat.
From the tool's definition Tool name 'get_library_stats' indicates retrieval of statistical information about the user's indexed PDF library. The verb 'get' and noun 'stats' (statistics) are consistent with read-only query operations.
Attacks that exploit this kind of access
The rule that runs get_library_stats safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Metis Public Health, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For get_library_stats, this is the rule to start with:
get_library_stats is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Metis Public Health, apply this rule, and every get_library_stats call is checked against it from then on.
Questions about get_library_stats
get_library_stats is a read tool on the Metis Public Health MCP server. It is categorised as a Read tool in the Metis Public Health MCP Server, which means it retrieves data without modifying state.
Register the Metis Public Health MCP server in PolicyLayer and add a rule for get_library_stats: 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 Metis Public Health. Nothing to install.
get_library_stats 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 get_library_stats 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 get_library_stats. 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.
get_library_stats is provided by the Metis Public Health MCP server (sveritg/metis_ph). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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