check_gdscript_syntax

THE RISK

High Risk

The tool executes the Godot engine as a subprocess with --check-only flag to perform syntax validation. While the intent is read-only diagnostics, it actively runs an external binary process, making it Execute category. Misuse could involve passing malicious file paths or triggering unexpected Godot behavior.

From the tool's definition 'Run Godot --check-only against a GDScript file' — explicitly runs an external process (the Godot binary) against a file

Documented attack patterns abuse exactly the kind of access check_gdscript_syntax gives an agent:

HOW TO CONTROL CHECK_GDSCRIPT_SYNTAX

PolicyLayer is an MCP gateway — it sits between your AI agents and Godot Devtool, and nothing reaches the server without passing your rules. This is the rule we recommend for check_gdscript_syntax:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "check_gdscript_syntax": {
      "limits": [
        {
          "counter": "check_gdscript_syntax_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

check_gdscript_syntax stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

Create a free account and register Godot Devtool — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RATE-LIMIT THIS TOOL →

Free to start. No card required.

EXPLORE

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Go deeper

High-risk tools in Godot Devtool → Every high-risk tool this server exposes, in one view.
All high-risk MCP tools → Every high-risk tool across the catalogue, and the policy pattern that contains them.
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FAQ

What does the check_gdscript_syntax tool do? +

Run Godot --check-only against a GDScript file and return diagnostics. It is categorised as a Execute tool in the Godot Devtool MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on check_gdscript_syntax? +

Register the Godot Devtool MCP server in PolicyLayer and add a rule for check_gdscript_syntax: 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 Devtool. Nothing to install.

What risk level is check_gdscript_syntax? +

check_gdscript_syntax is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit check_gdscript_syntax? +

Yes. Add a rate_limit block to the check_gdscript_syntax 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 check_gdscript_syntax completely? +

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

check_gdscript_syntax is provided by the Godot Devtool MCP server (wangdiandao/godot-devtool). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Godot Devtool tool call.

Deterministic rules across all 101 Godot Devtool tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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// WHAT CHECK_GDSCRIPT_SYNTAX ON GODOT DEVTOOL DOES

// THE RISK

// HOW TO CONTROL CHECK_GDSCRIPT_SYNTAX

// EXPLORE