edit_shader

Edit a shader file by replacing old_text with new_text

SERVERGodot SOURCE@keeveeg/godot-mcp

Medium RISK CLASS

Category Write

Parameters 33 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

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

WHAT IT DOES

What edit_shader does on Godot

AI agents use edit_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.

Parameter	Type	Required	Description
`path`	string	Yes	Shader file path
`new_text`	string	Yes	Replacement text
`old_text`	string	Yes	Text to find and replace

Parameters from the server's own tool schema.

RISK

Why edit_shader is rated Medium

This tool creates or modifies data (shader code) in a reversible manner. While shaders control rendering behavior in Godot, the action itself is a write operation—the changes can be undone by reverting the file or re-editing it. The high severity reflects that corrupted shader code could break rendering in a game project, but it's not Destructive (reversible) nor Execute (doesn't run code, just edits it).

From the tool's definition Tool description states it can 'replace old_text with new_text' in shader files, which modifies file content.

Risk signalsAccepts file system path (path)

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs edit_shader 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 edit_shader, this is the rule to start with:

edit_shader Rate-limited

edit_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": {
    "edit_shader": {
      "limits": [
        {
          "counter": "edit_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, apply this rule, and every edit_shader call is checked against it from then on.

FAQ

Questions about edit_shader

What does the edit_shader tool do? +

Edit a shader file by replacing old_text with new_text. 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 edit_shader accept? +

edit_shader accepts 3 parameters: path, new_text, old_text. Required: path, new_text, old_text. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on edit_shader? +

Register the Godot MCP server in PolicyLayer and add a rule for edit_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 edit_shader? +

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

Can I rate-limit edit_shader? +

Yes. Add a rate_limit block to the edit_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 edit_shader completely? +

Set action: deny in the PolicyLayer policy for edit_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 edit_shader? +

edit_shader 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.

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