hippo_episode_unpin

FORGIA #197. Remove the pin from an episode — it

SERVERVerimem SOURCEaureliocpr-ctrl/verimem

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/verimem/hippo-episode-unpin.md

WHAT IT DOES

What hippo_episode_unpin does on Verimem

AI agents use hippo_episode_unpin to create or update resources in Verimem, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Verimem environment.

RISK

Why hippo_episode_unpin is rated Medium

Unpinning an episode is a reversible state change (the pin can be re-applied), so it falls under Write rather than Destructive. The description is truncated ('it' is cut off), which reduces confidence slightly. Severity is medium because removing a pin could affect how important memories are recalled or prioritized by the AI agent, but the data itself is not deleted.

From the tool's definition 'Remove the pin from an episode' — this modifies the pinned status of an episode, reversing a pin operation

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hippo_episode_unpin 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_unpin, this is the rule to start with:

hippo_episode_unpin Rate-limited

hippo_episode_unpin stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hippo_episode_unpin": {
      "limits": [
        {
          "counter": "hippo_episode_unpin_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Verimem, apply this rule, and every hippo_episode_unpin call is checked against it from then on.

FAQ

Questions about hippo_episode_unpin

What does the hippo_episode_unpin tool do? +

FORGIA #197. Remove the pin from an episode — it. It is categorised as a Write tool in the Verimem MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on hippo_episode_unpin? +

Register the Verimem MCP server in PolicyLayer and add a rule for hippo_episode_unpin: 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.

What risk level is hippo_episode_unpin? +

hippo_episode_unpin is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit hippo_episode_unpin? +

Yes. Add a rate_limit block to the hippo_episode_unpin 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.

How do I block hippo_episode_unpin completely? +

Set action: deny in the PolicyLayer policy for hippo_episode_unpin. 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.

What MCP server provides hippo_episode_unpin? +

hippo_episode_unpin 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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