AI agents use script_attach to create or update resources in Godot Devtool — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Godot Devtool environment.
This tool modifies project state by attaching scripts to nodes, which changes behavior and state of scenes. It is reversible (scripts can be detached or replaced), so it does not qualify as Destructive. It does not execute arbitrary code directly, so it is not Execute. The change persists in the project and affects runtime behavior, making it Write rather than Read.
From the tool's definition Tool name 'script_attach' and description 'Attach a GDScript resource to a node in a scene' indicate modification of scene structure and node properties. GDScript attachment is a reversible but significant structural change to a Godot project.
Documented attack patterns abuse exactly the kind of access script_attach gives an agent:
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 script_attach:
{
"version": "1",
"default": "deny",
"tools": {
"script_attach": {
"limits": [
{
"counter": "script_attach_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}script_attach 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.
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Attach a GDScript resource to a node in a scene. It is categorised as a Write tool in the Godot Devtool MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Godot Devtool MCP server in PolicyLayer and add a rule for script_attach: 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.
script_attach is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the script_attach 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.
Set action: deny in the PolicyLayer policy for script_attach. 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.
script_attach 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.
Deterministic rules across all 101 Godot Devtool tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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101 Godot Devtool tools catalogued and risk-classified — across an index of 42,500+ MCP servers.