memory_delete
AI agents call memory_delete to permanently remove resources in Awslabs Valkey — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool name strongly suggests permanent removal of data from an in-memory data store. ElastiCache/MemoryDB deletions cannot be undone without restoring from backups. This is more severe than Write (which is reversible) and falls squarely into Destructive category. The empty description lowers confidence slightly, but the semantic clarity of 'delete' in a destructive operation context is high.
From the tool's definition Tool name 'memory_delete' indicates deletion of data from the ElastiCache/MemoryDB (Valkey) instance. No description provided, but 'delete' operations on cached data are irreversible.
Attacks that exploit this kind of access
memory_delete. It is categorised as a Destructive tool in the Awslabs Valkey MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Awslabs Valkey MCP server in PolicyLayer and add a rule for memory_delete: 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 Awslabs Valkey. Nothing to install.
memory_delete 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 memory_delete 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 memory_delete. 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.
memory_delete is provided by the Awslabs Valkey MCP server (awslabs.valkey-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.