hippo_skill_similar
FORGIA #199. Top-k skills with the most token overlap
This record as markdown: /tools/verimem/hippo-skill-similar.md
What hippo_skill_similar does on Verimem
AI agents call hippo_skill_similar 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_similar is rated Low
This tool performs a similarity search or ranking operation over skills based on token overlap metrics. It retrieves and reports results (Read behavior) without creating, modifying, deleting, executing external operations, or affecting financial state. The operation is informational and non-destructive.
From the tool's definition Tool description states 'Top-k skills with the most token overlap' — a retrieval operation that queries and returns data without modification or side effects.
Attacks that exploit this kind of access
The rule that runs hippo_skill_similar 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_similar, this is the rule to start with:
hippo_skill_similar 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_similar call is checked against it from then on.
Questions about hippo_skill_similar
FORGIA #199. Top-k skills with the most token overlap. 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_similar: 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_similar 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_similar 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_similar. 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_similar 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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