set_shader_param

Set a shader parameter (uniform) on a ShaderMaterial

SERVERGodot SOURCE@keeveeg/godot-mcp

Medium RISK CLASS

Category Write

Parameters 32 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/keeveeg-godot-mcp/set-shader-param.md

WHAT IT DOES

What set_shader_param does on Godot

AI agents use set_shader_param 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.

Parameter	Type	Required	Description
`param`	string	Yes	Shader uniform name
`value`	object	—	Parameter value
`node_path`	string	Yes	Node path with the ShaderMaterial

Parameters from the server's own tool schema.

RISK

Why set_shader_param is rated Medium

This tool modifies shader parameters on materials, which is a reversible write operation within a Godot game engine context. It changes visual rendering properties but does not execute arbitrary code, delete data, or cause financial impact.

From the tool's definition Tool name 'set_shader_param' and description 'Set a shader parameter (uniform) on a ShaderMaterial' indicate modification of shader material properties.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs set_shader_param safely

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

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.

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

FAQ

Questions about set_shader_param

What does the set_shader_param tool do? +

Set a shader parameter (uniform) on a ShaderMaterial. 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 set_shader_param accept? +

set_shader_param accepts 3 parameters: param, value, node_path. Required: param, node_path. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on set_shader_param? +

Register the Godot 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. 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 (@keeveeg/godot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

KEEP EXPLORING

More on Godot, and thousands of servers like it.

This server

All 321 Godot tools →

Across the catalogue

set-prioity on Kanban MCP Server →team_manager_set_sources on Team Manager MCP →qt_set_property on Qt → The MCP Attack Database →

Guides

Govern customer-ops agents →Argument validation →Scoped token →