hippo_entity_neighbors

P2.b — BFS bounded sugli edge entity_edges.

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-entity-neighbors.md

WHAT IT DOES

What hippo_entity_neighbors does on Verimem

AI agents call hippo_entity_neighbors 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_entity_neighbors is rated Low

This tool performs graph traversal to discover neighboring entities connected by edges. BFS is a standard read-only graph algorithm that retrieves relationship data. No evidence of data creation, deletion, code execution, or side effects. The verimem server context (a memory engine for AI agents) further supports this as a query/retrieval function.

From the tool's definition Tool description indicates 'BFS bounded sugli edge entity_edges' — a breadth-first search traversal operation over entity relationships.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hippo_entity_neighbors 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_entity_neighbors, this is the rule to start with:

hippo_entity_neighbors Allowed

hippo_entity_neighbors 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_entity_neighbors": {}
  }
}

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_entity_neighbors call is checked against it from then on.

FAQ

Questions about hippo_entity_neighbors

What does the hippo_entity_neighbors tool do? +

P2.b — BFS bounded sugli edge entity_edges. 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_entity_neighbors? +

Register the Verimem MCP server in PolicyLayer and add a rule for hippo_entity_neighbors: 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_entity_neighbors? +

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

Can I rate-limit hippo_entity_neighbors? +

Yes. Add a rate_limit block to the hippo_entity_neighbors 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_entity_neighbors completely? +

Set action: deny in the PolicyLayer policy for hippo_entity_neighbors. 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_entity_neighbors? +

hippo_entity_neighbors 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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