invalidate_entity

SERVEREnhanced Knowledge Graph Memory Server SOURCEdanielsimonjr/memory-mcp

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/danielsimonjr-memory-mcp/invalidate-entity.md

WHAT IT DOES

What invalidate_entity does on Enhanced Knowledge Graph Memory Server

AI agents call invalidate_entity to permanently remove resources in Enhanced Knowledge Graph Memory Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why invalidate_entity is rated Critical

An AI agent that decides to call invalidate_entity doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from Enhanced Knowledge Graph Memory Server is gone. There is no undo for destructive operations.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs invalidate_entity safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For invalidate_entity, this is the rule to start with:

invalidate_entity Hidden

invalidate_entity 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": [
    "invalidate_entity"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every invalidate_entity call is checked against it from then on.

FAQ

Questions about invalidate_entity

What does the invalidate_entity tool do? +

\u03B7.4.4 \u2014 Mark an entity as no longer valid by setting validUntil. Idempotent. Does not delete the entity \u2014 entity_as_of still returns it for past asOf timestamps. Orthogonal to v1.8 supersession. It is categorised as a Destructive tool in the Enhanced Knowledge Graph Memory Server 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 invalidate_entity? +

Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for invalidate_entity: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.

What risk level is invalidate_entity? +

invalidate_entity 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 invalidate_entity? +

Yes. Add a rate_limit block to the invalidate_entity 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 invalidate_entity completely? +

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

invalidate_entity is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

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