hippo_dream_diff

CYCLE #37 — Hippo Dreams review. Differenze shadow vs live:

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-dream-diff.md

WHAT IT DOES

What hippo_dream_diff does on Verimem

AI agents call hippo_dream_diff 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_dream_diff is rated Low

This tool appears to retrieve and compare shadow (draft/test) versus live memory states to identify differences. The operation is read-only—it queries existing data and presents differences without modifying, deleting, or executing code. No irreversible actions, financial operations, or command execution are implied.

From the tool's definition Tool name 'hippo_dream_diff' with description indicating it reviews and compares ('Differenze shadow vs live') memory states. The verb 'review' and comparative analysis ('diff') indicate data retrieval and comparison without modification or side effects.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hippo_dream_diff 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_dream_diff, this is the rule to start with:

hippo_dream_diff Allowed

hippo_dream_diff 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_dream_diff": {}
  }
}

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_dream_diff call is checked against it from then on.

FAQ

Questions about hippo_dream_diff

What does the hippo_dream_diff tool do? +

CYCLE #37 — Hippo Dreams review. Differenze shadow vs live:. 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_dream_diff? +

Register the Verimem MCP server in PolicyLayer and add a rule for hippo_dream_diff: 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_dream_diff? +

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

Can I rate-limit hippo_dream_diff? +

Yes. Add a rate_limit block to the hippo_dream_diff 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_dream_diff completely? +

Set action: deny in the PolicyLayer policy for hippo_dream_diff. 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_dream_diff? +

hippo_dream_diff 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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