mcp_memory_create_relations · MCP Memory Server MCP

WHAT IT DOES

What mcp_memory_create_relations does on MCP Memory Server

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

WHY IT NEEDS A POLICY

Why mcp_memory_create_relations needs a policy

The tool creates new relations in the knowledge graph, which is a reversible data modification operation (relations can be deleted via mcp_memory_delete_relations). This is quintessentially a Write category action. Severity is medium because misuse could corrupt the knowledge graph structure or create misleading relationships that affect AI reasoning, but the operation is reversible.

From the tool's definition Tool name 'create_relations' and description 'Create relations between entities' indicate creation and modification of data in the knowledge graph. This is a write operation that modifies the graph structure by establishing new relationships.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mcp_memory_create_relations Rate-limited

mcp_memory_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": {
    "mcp_memory_create_relations": {
      "limits": [
        {
          "counter": "mcp_memory_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 MCP Memory Server, so you can run agents against it safely.

FAQ

Questions about mcp_memory_create_relations

What does the mcp_memory_create_relations tool do? +

Create relations between entities. It is categorised as a Write tool in the MCP 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 mcp_memory_create_relations? +

Register the MCP Memory Server MCP server in PolicyLayer and add a rule for mcp_memory_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 MCP Memory Server. Nothing to install.

What risk level is mcp_memory_create_relations? +

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

Can I rate-limit mcp_memory_create_relations? +

Yes. Add a rate_limit block to the mcp_memory_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 mcp_memory_create_relations completely? +

Set action: deny in the PolicyLayer policy for mcp_memory_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 mcp_memory_create_relations? +

mcp_memory_create_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.