Delete a memory by ID. Use when the user asks to forget something.
AI agents call forget_memory to permanently remove resources in Mentedb — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
| Parameter | Type | Required | Description |
|---|---|---|---|
id | string | Yes | UUID of the memory to delete |
reason | string | null | — | Optional reason for deletion |
Parameters from the server's own tool schema.
This tool permanently removes memory records from the MenteDB persistent storage without the ability to recover them. While the blast radius is limited to the agent's own memory (not system-wide data), deletion is irreversible and represents a destructive action.
From the tool's definition Tool name 'forget_memory' and description 'Delete a memory by ID' indicate irreversible deletion of stored data.
Attacks that exploit this kind of access
Delete a memory by ID. Use when the user asks to forget something. It is categorised as a Destructive tool in the Mentedb MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
forget_memory accepts 2 parameters: id, reason. Required: id. The full parameter table on this page comes from the server's own tool schema.
Register the Mentedb MCP server in PolicyLayer and add a rule for forget_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 Mentedb. Nothing to install.
forget_memory 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 forget_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.
Set action: deny in the PolicyLayer policy for forget_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.
forget_memory is provided by the Mentedb MCP server (mentedb-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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