Deletes a note from the memory system. Removes the note from Graph and Vector Store as well as all associated connections.
AI agents call delete_atomic_note to permanently remove resources in A-MEM: Agentic Memory System — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
This tool permanently removes data (notes and their connections) from the agent's memory system without the ability to undo the action. While the blast radius is limited to the agent's own memory rather than shared production data, deletion of memory could severely impair agent functionality and knowledge continuity.
From the tool's definition The tool description explicitly states it "Deletes a note from the memory system" and "Removes the note from Graph and Vector Store as well as all associated connections." The use of 'delete' combined with removal from multiple data stores indicates an…
Documented attack patterns abuse exactly the kind of access delete_atomic_note gives an agent:
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 delete_atomic_note:
{
"version": "1",
"default": "deny",
"hide": [
"delete_atomic_note"
]
}delete_atomic_note disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.
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Deletes a note from the memory system. Removes the note from Graph and Vector Store as well as all associated connections. 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.
Register the A-MEM: Agentic Memory System MCP server in PolicyLayer and add a rule for delete_atomic_note: 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.
delete_atomic_note is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the delete_atomic_note 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.
Set action: deny in the PolicyLayer policy for delete_atomic_note. 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.
delete_atomic_note 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.
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.
Free to start. No card required.
15 A-MEM: Agentic Memory System tools catalogued and risk-classified — across an index of 43,000+ MCP servers.