create_shader · Godot MCP Unified MCP: Risk & Policy

WHAT IT DOES

What create_shader does on Godot MCP Unified

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

WHY IT NEEDS A POLICY

Why create_shader needs a policy

This tool creates new shader files in the Godot project. File creation is a Write operation because it produces new data that can be edited or deleted without permanent consequences. Severity is medium because a malicious shader could impact game rendering or performance, but the effect is localized to the shader asset and can be undone by deletion.

From the tool's definition Tool creates a new .gdshader file with shader code. The verb 'create' and description 'Create a .gdshader file' explicitly indicates file creation, which is a reversible write operation.

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 MCP Unified, so you can run agents against it safely.

FAQ

Questions about create_shader

What does the create_shader tool do? +

Create a .gdshader file with specified shader type and code. It is categorised as a Write tool in the Godot MCP Unified MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_shader? +

Register the Godot MCP Unified 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 MCP Unified. 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 Unified MCP server (pierrealexandreguillemin-a11y/godot-mcp-unified). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.