Delete short-term memories matching a keyword or regex pattern.
AI agents call delete_short_term_memories to permanently remove resources in Memory MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool permanently removes data (short-term memories) without possibility of recovery through standard means. Although the blast radius is somewhat limited to short-term context (not persistent long-term storage), deletion operations are irreversible by nature and fall under the Destructive category.
From the tool's definition Tool name explicitly contains 'delete', and description states 'Delete short-term memories matching a keyword or regex pattern.' This is an irreversible deletion operation.
Attacks that exploit this kind of access
Delete short-term memories matching a keyword or regex pattern. It is categorised as a Destructive tool in the Memory MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Memory MCP Server MCP server in PolicyLayer and add a rule for delete_short_term_memories: 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 Memory MCP Server. Nothing to install.
delete_short_term_memories 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_short_term_memories 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_short_term_memories. 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_short_term_memories is provided by the Memory MCP Server MCP server (win10ogod/memory-mcp-server). 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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