simulate_action · Godot MCP Server MCP: Risk & Policy

WHAT IT DOES

What simulate_action does on Godot MCP Server

AI agents invoke simulate_action 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 simulate_action needs a policy

This tool triggers input actions within a running game instance, causing the game to respond as if a user performed those actions. This constitutes executing external operations with effects that depend on arguments (e.g., triggering movement, attacks, UI interactions, or game state changes). It is not merely reading data, and effects may be significant depending on what actions are mapped.

From the tool's definition Simulate an Input Map action in the running game

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

simulate_action Rate-limited

simulate_action 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": {
    "simulate_action": {
      "limits": [
        {
          "counter": "simulate_action_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 simulate_action

What does the simulate_action tool do? +

Simulate an Input Map action in the running game. 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 simulate_action? +

Register the Godot MCP Server MCP server in PolicyLayer and add a rule for simulate_action: 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 simulate_action? +

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

Can I rate-limit simulate_action? +

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

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

simulate_action is provided by the Godot MCP Server MCP server (neondeex/godotmcp-pro-free-client). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.