remove_relation

THE RISK

Critical Risk

Why remove_relation needs a policy

Removing a relation between notes deletes a graph edge permanently. There is no indication of a soft-delete or undo mechanism. In a graph-based memory system, relations encode semantic connections that may be difficult or impossible to reconstruct, making this a destructive operation.

From the tool's definition 'Removes a relation between two notes' — the word 'removes' indicates an irreversible deletion of a relationship link in the knowledge graph.

Documented attack patterns abuse exactly the kind of access remove_relation gives an agent:

POLICY

How to control remove_relation

PolicyLayer is an MCP gateway — it sits between your AI agents and A-MEM: Agentic Memory System, and nothing reaches the server without passing your rules. This is the rule we recommend for remove_relation:

policy.json

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

remove_relation disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register A-MEM: Agentic Memory System — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More A-MEM: Agentic Memory System tools

Destructive delete_atomic_note Deletes a note from the memory system. Removes the note from Graph and Vector Store as wel Destructive reset_memory Resets the complete memory system (Graph + Vector Store). Deletes all notes, edges, and em Execute run_memory_enzymes Runs comprehensive memory maintenance enzymes: repairs corrupted nodes, prunes old/weak li Execute research_and_store Performs deep web research on a query and stores the findings as atomic notes. Uses Google Write add_file Stores the content of a file (e.g., .md) as a note in the memory system. Supports automati Write add_relation Adds a manual relation between two notes. Write create_atomic_note Stores a new piece of information in the memory system. Automatically classifies the note Write update_note Updates contextual summary, tags or keywords for an existing note.

All 15 A-MEM: Agentic Memory System tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan cPanel MCP Server clear_spam_box

Go deeper

Critical-risk tools in A-MEM: Agentic Memory System → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about remove_relation

What does the remove_relation tool do? +

Removes a relation between two notes. It is categorised as a Destructive tool in the A-MEM: Agentic Memory System 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 remove_relation? +

Register the A-MEM: Agentic Memory System MCP server in PolicyLayer and add a rule for remove_relation: 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 A-MEM: Agentic Memory System. Nothing to install.

What risk level is remove_relation? +

remove_relation 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 remove_relation? +

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

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

remove_relation is provided by the A-MEM: Agentic Memory System MCP server (tobs-code/a-mem-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every A-MEM: Agentic Memory System tool call.

Start from A-MEM: Agentic Memory System, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →