godot_run_scene · Godot MCP Server MCP: Risk & Policy

WHAT IT DOES

What godot_run_scene does on Godot MCP Server

AI agents invoke godot_run_scene to trigger actions in Godot MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why godot_run_scene needs a policy

This tool executes code by launching a Godot scene, which involves instantiating nodes, running their _ready() and _process() callbacks, and potentially executing any game logic defined in that scene.

From the tool's definition Tool description states it will "Run a specific scene in the Godot project (non-headless, will open a window)." The term "run" combined with opening a window indicates execution of arbitrary game code within the Godot engine.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

godot_run_scene Rate-limited

godot_run_scene stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "godot_run_scene": {
      "limits": [
        {
          "counter": "godot_run_scene_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about godot_run_scene

What does the godot_run_scene tool do? +

Run a specific scene in the Godot project (non-headless, will open a window). It is categorised as a Execute tool in the Godot MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on godot_run_scene? +

Register the Godot MCP Server MCP server in PolicyLayer and add a rule for godot_run_scene: 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 Godot MCP Server. Nothing to install.

What risk level is godot_run_scene? +

godot_run_scene is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit godot_run_scene? +

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

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

godot_run_scene is provided by the Godot MCP Server MCP server (struktured-labs/godot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.