editor_instantiate_scene
Instantiate a PackedScene into the current scene.
This record as markdown: /tools/yanhuifair-godot-mcp/editor-instantiate-scene.md
What editor_instantiate_scene does on Godot
AI agents call editor_instantiate_scene to retrieve information from Godot without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
name | object | — | |
scene | string | Yes | PackedScene path to instantiate |
parent | object | — |
Parameters from the server's own tool schema.
Why editor_instantiate_scene is rated Low
Even though editor_instantiate_scene only reads data, uncontrolled read access leaks sensitive information and racks up API costs: an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
The rule that runs editor_instantiate_scene 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 editor_instantiate_scene, this is the rule to start with:
editor_instantiate_scene is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Godot, apply this rule, and every editor_instantiate_scene call is checked against it from then on.
Questions about editor_instantiate_scene
Instantiate a PackedScene into the current scene. It is categorised as a Read tool in the Godot MCP Server, which means it retrieves data without modifying state.
editor_instantiate_scene accepts 3 parameters: name, scene, parent. Required: scene. The full parameter table on this page comes from the server's own tool schema.
Register the Godot MCP server in PolicyLayer and add a rule for editor_instantiate_scene: 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.
editor_instantiate_scene is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the editor_instantiate_scene 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_instantiate_scene. 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_instantiate_scene is provided by the Godot MCP server (@yanhuifair/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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