AI agents use editor_set_main_scene 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 |
|---|---|---|---|
scene | string | Yes | Scene path to set as main |
Parameters from the server's own tool schema.
This tool modifies project metadata by changing which scene is the main entry point. While reversible (can be changed again), it affects runtime behavior and project integrity. It's a Write action because it updates project state without destruction, but severity is high because misconfiguration could break game initialization or cause unexpected behavior if an agent sets it to invalid/unsafe values.
From the tool's definition Set the project main scene. This modifies project configuration state (the entry point scene for game execution).
Attacks that exploit this kind of access
Set the project main scene. 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.
editor_set_main_scene accepts 1 parameter: scene. 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_set_main_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_set_main_scene 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_set_main_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_set_main_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_set_main_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.
editor_set_main_scene is one line of Godot's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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