set_shader_param · Godot MCP Server MCP: Risk & Policy

WHAT IT DOES

What set_shader_param does on Godot MCP Server

AI agents use set_shader_param 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_shader_param needs a policy

The tool modifies shader uniform parameters, which are reversible changes to node properties within the Godot editor. This is a Write operation—it changes state but does not execute arbitrary code, delete data, or cause financial impact. Severity is medium because misuse could alter game visuals in unintended ways, but changes are reversible and limited to shader parameters on a single node.

From the tool's definition Tool name 'set_shader_param' and description 'Set a shader uniform parameter on a node' indicate modification of shader properties on game nodes. This changes visual rendering parameters without deleting data.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

set_shader_param Rate-limited

set_shader_param 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_shader_param": {
      "limits": [
        {
          "counter": "set_shader_param_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_shader_param

What does the set_shader_param tool do? +

Set a shader uniform parameter on a 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_shader_param? +

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

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

Can I rate-limit set_shader_param? +

Yes. Add a rate_limit block to the set_shader_param 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_shader_param completely? +

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

set_shader_param 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.