create_shader · Godot MCP: Risk & Policy

WHAT IT DOES

What create_shader does on Godot

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

PARAMETERS

Parameter	Type	Required	Description
`path`	string	Yes	Output path (relative to project root, e.g. "shaders/glow.gdshader")
`type`	string	Yes	Shader type template

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why create_shader needs a policy

This tool creates a new shader file (.gdshader) in a Godot project, which is a reversible Write operation. It does not execute code, delete data, or move money. The severity is medium because creating arbitrary shader files could affect game rendering or introduce malicious visual effects, but the impact is limited to the local project and can be undone by deletion.

From the tool's definition Tool name is 'create_shader' and description states 'Create a new .gdshader from template', which involves creating a new file in the game project.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_shader Rate-limited

create_shader 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": {
    "create_shader": {
      "limits": [
        {
          "counter": "create_shader_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, so you can run agents against it safely.

FAQ

Questions about create_shader

What does the create_shader tool do? +

Create a new .gdshader from template. It is categorised as a Write tool in the Godot MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does create_shader accept? +

create_shader accepts 2 parameters: path, type. Required: path, type. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on create_shader? +

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

What risk level is create_shader? +

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

Can I rate-limit create_shader? +

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

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

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