deregister_ref

Remove a stable alias (ref) from the RefIndex

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/deregister-ref.md

WHAT IT DOES

What deregister_ref does on Enhanced Knowledge Graph Memory Server

AI agents call deregister_ref 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 deregister_ref is rated Critical

The tool permanently removes a stable alias/reference from the RefIndex. Deletion of an index entry is irreversible — once the ref is deregistered, any pointers or lookups relying on that alias will break. This qualifies as Destructive rather than Write because the operation cannot be undone (the stable alias is gone).

From the tool's definition Remove a stable alias (ref) from the RefIndex

Attacks that exploit this kind of access

RECOMMENDED RULE

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

deregister_ref Hidden

deregister_ref 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": [
    "deregister_ref"
  ]
}

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 deregister_ref call is checked against it from then on.

FAQ

Questions about deregister_ref

What does the deregister_ref tool do? +

Remove a stable alias (ref) from the RefIndex. 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 deregister_ref? +

Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for deregister_ref: 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 deregister_ref? +

deregister_ref 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 deregister_ref? +

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

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

deregister_ref 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.

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