mem0_delete_memory

THE RISK

Critical Risk

Why mem0_delete_memory needs a policy

This tool permanently removes stored memory records without the ability to undo the action. Deletion is irreversible, making it Destructive rather than Write. In the context of a persistent memory system, unintended deletion of memories could cause loss of important contextual information that an AI agent relies on, resulting in high blast radius if misused (e.g., deleting critical user preferences, conversation…

From the tool's definition "Deletes a specific memory from Mem0 by its ID" — the verb 'deletes' explicitly indicates irreversible removal of data.

Documented attack patterns abuse exactly the kind of access mem0_delete_memory gives an agent:

POLICY

How to control mem0_delete_memory

PolicyLayer is an MCP gateway — it sits between your AI agents and Mem0 MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for mem0_delete_memory:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "mem0_delete_memory"
  ]
}

mem0_delete_memory 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 Mem0 MCP Server — 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

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All 18 Mem0 MCP Server tools →

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Go deeper

Critical-risk tools in Mem0 MCP Server → 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 mem0_delete_memory

What does the mem0_delete_memory tool do? +

Deletes a specific memory from Mem0 by its ID. It is categorised as a Destructive tool in the Mem0 MCP 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 mem0_delete_memory? +

Register the Mem0 MCP Server MCP server in PolicyLayer and add a rule for mem0_delete_memory: 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 Mem0 MCP Server. Nothing to install.

What risk level is mem0_delete_memory? +

mem0_delete_memory 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 mem0_delete_memory? +

Yes. Add a rate_limit block to the mem0_delete_memory 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 mem0_delete_memory completely? +

Set action: deny in the PolicyLayer policy for mem0_delete_memory. 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 mem0_delete_memory? +

mem0_delete_memory is provided by the Mem0 MCP Server MCP server (ryaker/mcp-mem0-general). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mem0 MCP Server tool call.

Start from Mem0 MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →