Delete a memory by ID.
AI agents call forget to permanently remove resources in NeverOnce — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
An AI agent that decides to call forget doesn't hesitate, doesn't double-check, and doesn't stop at one. Whatever it removes from NeverOnce is gone — there is no undo for destructive operations.
Attacks that exploit this kind of access
Delete a memory by ID. It is categorised as a Destructive tool in the NeverOnce MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the NeverOnce MCP server in PolicyLayer and add a rule for forget: 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 NeverOnce. Nothing to install.
forget 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 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. 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 is provided by the NeverOnce MCP server (weberg619/neveronce). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.