scene-set-active

by IvanMurzak

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SKILL.md About

---
name: scene-set-active
description: Set the specified opened scene as the active scene. Use 'scene-list-opened' tool to get the list of all opened scenes.
---

# Scene / Set Active

## How to Call

```bash
unity-mcp-cli run-tool scene-set-active --input '{
  "sceneRef": "string_value"
}'
```

> For complex input (multi-line strings, code), save the JSON to a file and use:
> ```bash
> unity-mcp-cli run-tool scene-set-active --input-file args.json
> ```
>
> Or pipe via stdin (recommended):
> ```bash
> unity-mcp-cli run-tool scene-set-active --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 |
|------|------|----------|-------------|
| `sceneRef` | `any` | Yes | Reference to UnityEngine.Object asset instance. It could be Material, ScriptableObject, Prefab, and any other Asset. Anything located in the Assets and Packages folders. |

### Input JSON Schema

```json
{
  "type": "object",
  "properties": {
    "sceneRef": {
      "$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Runtime.Data.AssetObjectRef"
    }
  },
  "$defs": {
    "System.Type": {
      "type": "string"
    },
    "com.IvanMurzak.Unity.MCP.Runtime.Data.AssetObjectRef": {
      "type": "object",
      "properties": {
        "instanceID": {
          "type": "integer",
          "description": "instanceID of the UnityEngine.Object. If this is '0' and 'assetPath' and 'assetGuid' is not provided, empty or null, then it will be used as 'null'."
        },
        "assetType": {
          "$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": "Reference to UnityEngine.Object asset instance. It could be Material, ScriptableObject, Prefab, and any other Asset. Anything located in the Assets and Packages folders."
    }
  },
  "required": [
    "sceneRef"
  ]
}
```

## Output

### Output JSON Schema

```json
{
  "type": "object",
  "properties": {
    "result": {
      "$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Runtime.Data.SceneDataShallow[]"
    }
  },
  "$defs": {
    "com.IvanMurzak.Unity.MCP.Runtime.Data.SceneDataShallow": {
      "type": "object",
      "properties": {
        "Name": {
          "type": "string"
        },
        "IsLoaded": {
          "type": "boolean"
        },
        "IsDirty": {
          "type": "boolean"
        },
        "IsSubScene": {
          "type": "boolean"
        },
        "IsValidScene": {
          "type": "boolean",
          "description": "Whether this is a valid Scene. A Scene may be invalid if, for example, you tried to open a Scene that does not exist. In this case, the Scene returned from EditorSceneManager.OpenScene would return False for IsValid."
        },
        "RootCount": {
          "type": "integer"
        },
        "path": {
          "type": "string",
          "description": "Path to the Scene within the project. Starts with 'Assets/'"
        },
        "buildIndex": {
          "type": "integer",
          "description": "Build index of the Scene in the Build Settings."
        },
        "instanceID": {
          "type": "integer",
          "description": "instanceID of the UnityEngine.Object. If this is '0', then it will be used as 'null'."
        }
      },
      "required": [
        "IsLoaded",
        "IsDirty",
        "IsSubScene",
        "IsValidScene",
        "RootCount",
        "buildIndex",
        "instanceID"
      ],
      "description": "Scene reference. Used to find a Scene."
    },
    "com.IvanMurzak.Unity.MCP.Runtime.Data.SceneDataShallow[]": {
      "type": "array",
      "items": {
        "$ref": "#/$defs/com.IvanMurzak.Unity.MCP.Runtime.Data.SceneDataShallow",
        "description": "Scene reference. Used to find a Scene."
      }
    }
  },
  "required": [
    "result"
  ]
}
```