hippo_skills_topology
FORGIA #250 — DAG topology stats: n_nodes, n_edges,
This record as markdown: /tools/verimem/hippo-skills-topology.md
What hippo_skills_topology does on Verimem
AI agents call hippo_skills_topology 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_skills_topology is rated Low
This tool performs a passive statistical query on an internal data structure (graph topology). It retrieves metrics without side effects, aligning with the Read category definition. The low severity reflects minimal blast radius — misuse would only expose internal graph statistics, not enable data modification, deletion, code execution, or financial impact.
From the tool's definition Tool description indicates it retrieves 'DAG topology stats: n_nodes, n_edges' — it queries and returns statistics about a directed acyclic graph structure with no modification, deletion, or execution capability mentioned.
Attacks that exploit this kind of access
The rule that runs hippo_skills_topology 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_skills_topology, this is the rule to start with:
hippo_skills_topology 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_skills_topology call is checked against it from then on.
Questions about hippo_skills_topology
FORGIA #250 — DAG topology stats: n_nodes, n_edges,. 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_skills_topology: 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_skills_topology 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_skills_topology 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_skills_topology. 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_skills_topology 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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