Files
2026-06-30 22:12:46 +08:00

170 lines
4.5 KiB
Markdown

---
name: assets-prefab-instantiate
description: Instantiate a prefab into the currently active scene at an optional position/rotation/scale, parented under an optional scene GameObject path. Use 'assets-find' to locate the prefab asset first.
---
# Assets / Prefab / Instantiate
Instantiates prefab in the current active scene. Use 'assets-find' tool to find prefab assets in the project.
## Inputs
- `prefabAssetPath` — project asset path of the prefab to instantiate.
- `gameObjectPath` — destination path in the scene; the last segment becomes the new GameObject's name, any prefix is looked up as the parent (must already exist).
- `position` / `rotation` / `scale` — optional transform; default to zero / zero / one.
- `isLocalSpace` — when `true`, applies the transform in local space relative to the parent.
## How to Call
```bash
unity-mcp-cli run-tool assets-prefab-instantiate --input '{
"prefabAssetPath": "string_value",
"gameObjectPath": "string_value",
"position": "string_value",
"rotation": "string_value",
"scale": "string_value",
"isLocalSpace": false
}'
```
> For complex input (multi-line strings, code), save the JSON to a file and use:
> ```bash
> unity-mcp-cli run-tool assets-prefab-instantiate --input-file args.json
> ```
>
> Or pipe via stdin (recommended):
> ```bash
> unity-mcp-cli run-tool assets-prefab-instantiate --input-file - <<'EOF'
> {"param": "value"}
> EOF
> ```
### Troubleshooting
If `unity-mcp-cli` is not found, either install it globally (`npm install -g unity-mcp-cli`) or use `npx unity-mcp-cli` instead.
Read the /unity-initial-setup skill for detailed installation instructions.
## Input
| Name | Type | Required | Description |
|------|------|----------|-------------|
| `prefabAssetPath` | `string` | Yes | Prefab asset path. |
| `gameObjectPath` | `string` | Yes | GameObject path in the current active scene. |
| `position` | `any` | No | Transform position of the GameObject. |
| `rotation` | `any` | No | Transform rotation of the GameObject. Euler angles in degrees. |
| `scale` | `any` | No | Transform scale of the GameObject. |
| `isLocalSpace` | `boolean` | No | World or Local space of transform. |
### Input JSON Schema
```json
{
"type": "object",
"properties": {
"prefabAssetPath": {
"type": "string"
},
"gameObjectPath": {
"type": "string"
},
"position": {
"$ref": "#/$defs/UnityEngine.Vector3"
},
"rotation": {
"$ref": "#/$defs/UnityEngine.Vector3"
},
"scale": {
"$ref": "#/$defs/UnityEngine.Vector3"
},
"isLocalSpace": {
"type": "boolean"
}
},
"$defs": {
"UnityEngine.Vector3": {
"type": "object",
"properties": {
"x": {
"type": "number"
},
"y": {
"type": "number"
},
"z": {
"type": "number"
}
},
"required": [
"x",
"y",
"z"
],
"additionalProperties": false
}
},
"required": [
"prefabAssetPath",
"gameObjectPath"
]
}
```
## Output
### Output JSON Schema
```json
{
"type": "object",
"properties": {
"result": {
"$ref": "#/$defs/AIGD.GameObjectRef",
"description": "Find GameObject in opened Prefab or in the active Scene."
}
},
"$defs": {
"System.Type": {
"type": "string"
},
"AIGD.GameObjectRef": {
"type": "object",
"properties": {
"instanceID": {
"type": "integer",
"description": "instanceID of the UnityEngine.Object. If it is '0' and 'path', 'name', 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'. Priority: 1 (Recommended)"
},
"path": {
"type": "string",
"description": "Path of a GameObject in the hierarchy Sample 'character/hand/finger/particle'. Priority: 2."
},
"name": {
"type": "string",
"description": "Name of a GameObject in hierarchy. Priority: 3."
},
"assetType": {
"$ref": "#/$defs/System.Type",
"description": "Type of the asset."
},
"assetPath": {
"type": "string",
"description": "Path to the asset within the project. Starts with 'Assets/'"
},
"assetGuid": {
"type": "string",
"description": "Unique identifier for the asset."
}
},
"required": [
"instanceID"
],
"description": "Find GameObject in opened Prefab or in the active Scene."
}
},
"required": [
"result"
]
}
```