Duplicate a node in the currently open editor scene through UndoRedo
AI agents use editor_duplicate_node 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.
Duplicating a node modifies the scene by creating a new node, which is a Write operation—data is created reversibly. It does not delete data (thus not Destructive), does not execute arbitrary code (thus not Execute), and does not move money (thus not Financial). The UndoRedo mechanism ensures reversibility, keeping severity at medium rather than high.
From the tool's definition Tool name 'editor_duplicate_node' and description 'Duplicate a node in the currently open editor scene through UndoRedo' indicate reversible creation of scene data. The mention of 'UndoRedo' confirms the action is reversible.
Documented attack patterns abuse exactly the kind of access editor_duplicate_node 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 editor_duplicate_node:
{
"version": "1",
"default": "deny",
"tools": {
"editor_duplicate_node": {
"limits": [
{
"counter": "editor_duplicate_node_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}editor_duplicate_node 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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Duplicate a node in the currently open editor scene through UndoRedo. 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 editor_duplicate_node: 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.
editor_duplicate_node 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 editor_duplicate_node 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 editor_duplicate_node. 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.
editor_duplicate_node 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.
Free to start. No card required.
101 Godot Devtool tools catalogued and risk-classified — across an index of 42,500+ MCP servers.