update_relation

Update a relation in the knowledge graph

SERVERDaniel LightRAG MCP Server SOURCEdesimpkins/daniel-lightrag-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

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

WHAT IT DOES

What update_relation does on Daniel LightRAG MCP Server

AI agents use update_relation to create or update resources in Daniel LightRAG MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Daniel LightRAG MCP Server environment.

RISK

Why update_relation is rated Medium

The tool modifies knowledge graph relations, which is a data mutation operation. It does not delete (Destructive), execute arbitrary code (Execute), move money (Financial), or merely read data (Read). Update operations are reversible and fall under Write category.

From the tool's definition Tool name is 'update_relation' and description states 'Update a relation in the knowledge graph' — indicates modification of existing graph data in a reversible manner.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs update_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 update_relation, this is the rule to start with:

update_relation Rate-limited

update_relation stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_relation": {
      "limits": [
        {
          "counter": "update_relation_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT 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 update_relation call is checked against it from then on.

FAQ

Questions about update_relation

What does the update_relation tool do? +

Update a relation in the knowledge graph. It is categorised as a Write tool in the Daniel LightRAG MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_relation? +

Register the Daniel LightRAG MCP Server MCP server in PolicyLayer and add a rule for update_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 update_relation? +

update_relation is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_relation? +

Yes. Add a rate_limit block to the update_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 update_relation completely? +

Set action: deny in the PolicyLayer policy for update_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 update_relation? +

update_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.

KEEP EXPLORING

More on Daniel LightRAG MCP Server, and thousands of servers like it.

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aroflo_create_or_update_record on AroFlo MCP →team_manager_update_budget on Team Manager MCP → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →