Create a new object/actor in the world Example output: {'success': true, 'actor_name': 'StaticMeshActor_1', 'actor_label': 'MyCube', 'class': 'StaticMeshActor', 'location': {'x': 100.0, 'y': 200.0, 'z': 0.0}, 'rotation': {'pitch': 0.0, 'yaw': 45.0, 'roll': 0.0}, 'scale': {'x': 1.0, 'y': 1.0, 'z':...
AI agents use editor_create_object to create or update resources in Unreal Mcp Ue4 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Unreal Mcp Ue4 environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
scale | object | — | Scale multipliers |
location | object | — | World position coordinates |
rotation | object | — | Rotation in degrees |
properties | object | — | Additional actor properties. For StaticMeshActor: use 'StaticMesh' for mesh path, 'Material' for single material path, or 'Materials' for array of material path |
object_name | string | Yes | Name/label for the created object |
object_class | string | Yes | Unreal class name (e.g., 'StaticMeshActor', 'DirectionalLight') |
Parameters from the server's own tool schema.
An AI agent can call editor_create_object faster than any human can review — one bad instruction and it creates or modifies resources in Unreal Mcp Ue4 by the hundred, each call as confident as the last.
Risk signalsHigh parameter count (15 properties)
Attacks that exploit this kind of access
Create a new object/actor in the world Example output: {'success': true, 'actor_name': 'StaticMeshActor_1', 'actor_label': 'MyCube', 'class': 'StaticMeshActor', 'location': {'x': 100.0, 'y': 200.0, 'z': 0.0}, 'rotation': {'pitch': 0.0, 'yaw': 45.0, 'roll': 0.0}, 'scale': {'x': 1.0, 'y': 1.0, 'z': 1.0}} Returns created actor details with final transform values. It is categorised as a Write tool in the Unreal Mcp Ue4 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
editor_create_object accepts 6 parameters: scale, location, rotation, properties, object_name, object_class. Required: object_name, object_class. The full parameter table on this page comes from the server's own tool schema.
Register the Unreal Mcp Ue4 MCP server in PolicyLayer and add a rule for editor_create_object: 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 Unreal Mcp Ue4. Nothing to install.
editor_create_object 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_create_object 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_create_object. 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_create_object is provided by the Unreal Mcp Ue4 MCP server (unreal-mcp-ue4). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.