hippo_extract_entities

P2.c — OpenIE LLM-based entity & triple extraction.

SERVERVerimem SOURCEaureliocpr-ctrl/verimem

Low RISK CLASS

Category Read

Parameters 00 required

Recommended Allowedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/verimem/hippo-extract-entities.md

WHAT IT DOES

What hippo_extract_entities does on Verimem

AI agents call hippo_extract_entities 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.

RISK

Why hippo_extract_entities is rated Low

Entity and triple extraction is fundamentally a read operation: it analyzes text or data and surfaces structured information without altering, deleting, or executing external actions. The low severity reflects that extracting entities poses minimal blast radius unless the extracted data is subsequently misused downstream.

From the tool's definition Tool description states 'entity & triple extraction' — this is information retrieval/querying from existing data. It uses 'OpenIE LLM-based' methods to parse and extract structured facts, with no mention of modification, deletion, or external side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hippo_extract_entities 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_extract_entities, this is the rule to start with:

hippo_extract_entities Allowed

hippo_extract_entities is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "hippo_extract_entities": {}
  }
}

ALLOW ONLY THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about hippo_extract_entities

What does the hippo_extract_entities tool do? +

P2.c — OpenIE LLM-based entity & triple extraction. It is categorised as a Read tool in the Verimem MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on hippo_extract_entities? +

Register the Verimem MCP server in PolicyLayer and add a rule for hippo_extract_entities: 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_extract_entities? +

hippo_extract_entities is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit hippo_extract_entities? +

Yes. Add a rate_limit block to the hippo_extract_entities 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_extract_entities completely? +

Set action: deny in the PolicyLayer policy for hippo_extract_entities. 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_extract_entities? +

hippo_extract_entities 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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