hippo_episode_clusters
FORGIA #226 — episode clustering by task_text token
This record as markdown: /tools/verimem/hippo-episode-clusters.md
What hippo_episode_clusters does on Verimem
AI agents call hippo_episode_clusters 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_episode_clusters is rated Low
The tool's function is to group and analyze existing episode data based on token similarity. No data is created, modified, deleted, or destroyed. No code execution, financial transactions, or irreversible operations occur. This is consistent with a Read operation—it queries and organizes existing memory data for insight.
From the tool's definition Tool performs clustering analysis on episodes indexed by task_text tokens, which is a data retrieval and analytical operation with no side effects, no modification of state, and no irreversible actions.
Attacks that exploit this kind of access
The rule that runs hippo_episode_clusters 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_episode_clusters, this is the rule to start with:
hippo_episode_clusters 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_episode_clusters call is checked against it from then on.
Questions about hippo_episode_clusters
FORGIA #226 — episode clustering by task_text token. 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_episode_clusters: 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_episode_clusters 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_episode_clusters 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_episode_clusters. 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_episode_clusters 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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