shadermaterial_set_shader

Load a Shader from a res:// path and assign it to the ShaderMaterial on a node

SERVERGodot Breakpoint SOURCEjlivingston-Cipher/godot-breakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/godot-breakpoint-mcp/shadermaterial-set-shader.md

WHAT IT DOES

What shadermaterial_set_shader does on Godot Breakpoint

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

RISK

Why shadermaterial_set_shader is rated Medium

This tool modifies shader properties on a node by loading and assigning a shader resource. It creates or changes rendering behavior but does not irreversibly delete data (Destructive), execute arbitrary code in the traditional sense (Execute), or remove data (Destructive). The modification is reversible by assigning a different shader.

From the tool's definition Tool description states 'Load a Shader from a res:// path and assign it to the ShaderMaterial on a node' - the verb 'assign' indicates modification of node properties.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs shadermaterial_set_shader safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Godot Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For shadermaterial_set_shader, this is the rule to start with:

shadermaterial_set_shader Rate-limited

shadermaterial_set_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": {
    "shadermaterial_set_shader": {
      "limits": [
        {
          "counter": "shadermaterial_set_shader_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Godot Breakpoint, apply this rule, and every shadermaterial_set_shader call is checked against it from then on.

FAQ

Questions about shadermaterial_set_shader

What does the shadermaterial_set_shader tool do? +

Load a Shader from a res:// path and assign it to the ShaderMaterial on a node. It is categorised as a Write tool in the Godot Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on shadermaterial_set_shader? +

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

What risk level is shadermaterial_set_shader? +

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

Can I rate-limit shadermaterial_set_shader? +

Yes. Add a rate_limit block to the shadermaterial_set_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 shadermaterial_set_shader completely? +

Set action: deny in the PolicyLayer policy for shadermaterial_set_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 shadermaterial_set_shader? +

shadermaterial_set_shader is provided by the Godot Breakpoint MCP server (jlivingston-Cipher/godot-breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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