create_relations · Loc Knowledge Graph Memory Server MCP

WHAT IT DOES

What create_relations does on Loc Knowledge Graph Memory Server

AI agents use create_relations to create or update resources in Loc Knowledge Graph Memory Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Loc Knowledge Graph Memory Server environment.

WHY IT NEEDS A POLICY

Why create_relations needs a policy

This tool creates new relations in a persistent knowledge graph, which is a reversible data modification operation (relations can be deleted via the sibling delete_relations tool). It does not retrieve data (Read), execute arbitrary code (Execute), irreversibly destroy data (Destructive), or involve financial operations (Financial).

From the tool's definition Tool description states it 'Create[s] multiple new relations between entities' - a direct create operation that modifies the knowledge graph by adding new data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_relations Rate-limited

create_relations 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": {
    "create_relations": {
      "limits": [
        {
          "counter": "create_relations_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Loc Knowledge Graph Memory Server, so you can run agents against it safely.

FAQ

Questions about create_relations

What does the create_relations tool do? +

Create multiple new relations between entities in the knowledge graph. Relations should be in active voice. It is categorised as a Write tool in the Loc Knowledge Graph Memory 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 create_relations? +

Register the Loc Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for create_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 Loc Knowledge Graph Memory Server. Nothing to install.

What risk level is create_relations? +

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

Can I rate-limit create_relations? +

Yes. Add a rate_limit block to the create_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.

How do I block create_relations completely? +

Set action: deny in the PolicyLayer policy for create_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.

What MCP server provides create_relations? +

create_relations 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.