Delete multiple entities and their associated relations from the knowledge graph
AI agents call delete_entities to permanently remove resources in Loc Knowledge Graph Memory Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
The tool permanently removes entities and their associated relations from persistent storage. This is a classic destructive operation: data loss is irreversible. While the blast radius is limited to the knowledge graph (not system-wide), deletion of user memory entities could impair the agent's ability to maintain context or fulfill user requests.
From the tool's definition Tool name 'delete_entities' and description states it will 'Delete multiple entities and their associated relations from the knowledge graph' — this is an irreversible operation that removes data and cannot be undone.
Attacks that exploit this kind of access
Delete multiple entities and their associated relations from the knowledge graph. It is categorised as a Destructive tool in the Loc Knowledge Graph Memory Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Loc Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for delete_entities: 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 Loc Knowledge Graph Memory Server. Nothing to install.
delete_entities 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_entities 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_entities. 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_entities is provided by the Loc Knowledge Graph Memory Server MCP server (myangsun/loc-memory-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
delete_entities is one line of Loc Knowledge Graph Memory Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →