set_physics_layers · Godot MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_physics_layers does on Godot MCP Server

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

WHY IT NEEDS A POLICY

Why set_physics_layers needs a policy

This tool modifies physics configuration (collision layers and masks) on existing nodes, which is a reversible Write operation. While it affects game behavior, the changes are not destructive (can be undone/reconfigured) and do not execute arbitrary code or delete data.

From the tool's definition Tool name 'set_physics_layers' and description 'Set the collision layer and mask bitmasks on a physics body node' indicate modification of node properties.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_physics_layers Rate-limited

set_physics_layers 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": {
    "set_physics_layers": {
      "limits": [
        {
          "counter": "set_physics_layers_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 Godot MCP Server, so you can run agents against it safely.

FAQ

Questions about set_physics_layers

What does the set_physics_layers tool do? +

Set the collision layer and mask bitmasks on a physics body node. It is categorised as a Write tool in the Godot MCP 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 set_physics_layers? +

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

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

Can I rate-limit set_physics_layers? +

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

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

set_physics_layers 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.