hippo_skill_top
FORGIA #198. Top-k skills sorted by fitness (mean),
This record as markdown: /tools/verimem/hippo-skill-top.md
What hippo_skill_top does on Verimem
AI agents call hippo_skill_top to retrieve information from Verimem without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why hippo_skill_top is rated Low
This tool queries and returns ranked skill data. The verb 'sorted by' and the listing nature indicate data retrieval only. No side effects, state changes, or external operations are triggered. The description is sparse but clearly indicates a read-only ranking/filtering operation on existing skill data. Low severity due to read-only nature and limited blast radius even if misused.
From the tool's definition Tool retrieves and sorts top-k skills by fitness metric; described as a query/listing operation ('sorted by') with no indication of modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
The rule that runs hippo_skill_top safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Verimem, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For hippo_skill_top, this is the rule to start with:
hippo_skill_top 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 Verimem, apply this rule, and every hippo_skill_top call is checked against it from then on.
Questions about hippo_skill_top
FORGIA #198. Top-k skills sorted by fitness (mean),. It is categorised as a Read tool in the Verimem MCP Server, which means it retrieves data without modifying state.
Register the Verimem MCP server in PolicyLayer and add a rule for hippo_skill_top: 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 Verimem. Nothing to install.
hippo_skill_top 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 hippo_skill_top 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 hippo_skill_top. 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.
hippo_skill_top is provided by the Verimem MCP server (aureliocpr-ctrl/verimem). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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