Delete multiple relations from the knowledge graph
AI agents call mcp_memory_delete_relations to permanently remove resources in MCP Memory Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Deletion of relations is an irreversible destructive operation that removes data from the knowledge graph without the ability to undo. While not as severe as financial operations, the destruction of relational data that may be critical to AI reasoning and conversation history warrants 'high' severity.
From the tool's definition Tool name explicitly contains 'delete' and description states 'Delete multiple relations from the knowledge graph', indicating irreversible removal of data stored in the persistent SQLite knowledge graph.
Attacks that exploit this kind of access
Delete multiple relations from the knowledge graph. It is categorised as a Destructive tool in the MCP Memory Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the MCP Memory Server MCP server in PolicyLayer and add a rule for mcp_memory_delete_relations: 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 MCP Memory Server. Nothing to install.
mcp_memory_delete_relations 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 mcp_memory_delete_relations 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 mcp_memory_delete_relations. 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.
mcp_memory_delete_relations is provided by the MCP Memory Server MCP server (jessefreitas/mcp_memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
mcp_memory_delete_relations is one line of MCP 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 →