plan_goal · MEMGRAPH- MCP: Risk & Policy

WHAT IT DOES

What plan_goal does on MEMGRAPH-MCP

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

WHY IT NEEDS A POLICY

Why plan_goal needs a policy

This tool creates/generates a plan or blueprint, which is a Write operation (creating structured data/artifacts). It does not execute code, delete data, or move money. The blueprint itself is a new artifact being created in the system. Medium severity because a misused plan could influence subsequent agent workflows in potentially harmful ways, but the tool itself only produces a planning artifact.

From the tool's definition Generate a large-app execution blueprint from a high-level goal and optional JSON spec

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

plan_goal Rate-limited

plan_goal 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": {
    "plan_goal": {
      "limits": [
        {
          "counter": "plan_goal_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 MEMGRAPH-MCP, so you can run agents against it safely.

FAQ

Questions about plan_goal

What does the plan_goal tool do? +

Generate a large-app execution blueprint from a high-level goal and optional JSON spec. It is categorised as a Write tool in the MEMGRAPH-MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on plan_goal? +

Register the MEMGRAPH- MCP server in PolicyLayer and add a rule for plan_goal: 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 MEMGRAPH-MCP. Nothing to install.

What risk level is plan_goal? +

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

Can I rate-limit plan_goal? +

Yes. Add a rate_limit block to the plan_goal 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 plan_goal completely? +

Set action: deny in the PolicyLayer policy for plan_goal. 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 plan_goal? +

plan_goal is provided by the MEMGRAPH- MCP server (mikeb317/memgraph-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.