delete_relation

Delete a relation from the knowledge graph

SERVERDaniel LightRAG MCP Server SOURCEdesimpkins/daniel-lightrag-mcp

Critical RISK CLASS

Category Destructive

Parameters 00 required

Recommended Hiddensee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/desimpkins-daniel-lightrag-mcp/delete-relation.md

WHAT IT DOES

What delete_relation does on Daniel LightRAG MCP Server

AI agents call delete_relation to permanently remove resources in Daniel LightRAG MCP Server, typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.

RISK

Why delete_relation is rated Critical

This tool permanently removes relational data from the knowledge graph. Deletion operations are irreversible and represent the most severe category of potential misuse. An AI agent with access to this tool could maliciously or accidentally sever important relationships in the knowledge graph, corrupting data integrity.

From the tool's definition Tool name 'delete_relation' combined with description 'Delete a relation from the knowledge graph' explicitly indicates irreversible deletion of data. The action 'Delete' is a destructive operation that cannot be undone.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs delete_relation safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Daniel LightRAG MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For delete_relation, this is the rule to start with:

delete_relation Hidden

delete_relation is removed from the agent's tool list entirely, so the agent never calls it. The rest of the server keeps working.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "delete_relation"
  ]
}

RESTRICT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Daniel LightRAG MCP Server, apply this rule, and every delete_relation call is checked against it from then on.

FAQ

Questions about delete_relation

What does the delete_relation tool do? +

Delete a relation from the knowledge graph. It is categorised as a Destructive tool in the Daniel LightRAG MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on delete_relation? +

Register the Daniel LightRAG MCP Server MCP server in PolicyLayer and add a rule for delete_relation: 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 Daniel LightRAG MCP Server. Nothing to install.

What risk level is delete_relation? +

delete_relation is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit delete_relation? +

Yes. Add a rate_limit block to the delete_relation 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.

How do I block delete_relation completely? +

Set action: deny in the PolicyLayer policy for delete_relation. 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.

What MCP server provides delete_relation? +

delete_relation is provided by the Daniel LightRAG MCP Server MCP server (desimpkins/daniel-lightrag-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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