hippo_forget_scope

B-1 multi-tenancy: forget ALL facts belonging to a tenant

SERVERVerimem SOURCEaureliocpr-ctrl/verimem

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/verimem/hippo-forget-scope.md

WHAT IT DOES

What hippo_forget_scope does on Verimem

AI agents call hippo_forget_scope to permanently remove resources in Verimem, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why hippo_forget_scope is rated Critical

This tool irreversibly deletes all memory/facts for an entire tenant scope. The word 'forget' combined with 'ALL facts' and the GDPR-grade forget capability described in the server description indicates a bulk, irreversible deletion operation. Misuse by an AI agent could wipe an entire tenant's knowledge base with no recovery path, making this critical severity.

From the tool's definition forget ALL facts belonging to a tenant

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs hippo_forget_scope 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_forget_scope, this is the rule to start with:

hippo_forget_scope Hidden

hippo_forget_scope is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "hippo_forget_scope"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

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

FAQ

Questions about hippo_forget_scope

What does the hippo_forget_scope tool do? +

B-1 multi-tenancy: forget ALL facts belonging to a tenant. It is categorised as a Destructive tool in the Verimem MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on hippo_forget_scope? +

Register the Verimem MCP server in PolicyLayer and add a rule for hippo_forget_scope: 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_forget_scope? +

hippo_forget_scope is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit hippo_forget_scope? +

Yes. Add a rate_limit block to the hippo_forget_scope 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_forget_scope completely? +

Set action: deny in the PolicyLayer policy for hippo_forget_scope. 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_forget_scope? +

hippo_forget_scope 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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