Agent skill

scene-set-active

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

View SKILL.md on GitHub Repository
Stars 2,087
Forks 190

Install this agent skill to your Project

npx add-skill https://github.com/IvanMurzak/Unity-MCP/tree/main/Unity-MCP-Plugin/.claude/skills/scene-set-active

SKILL.md

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"
  ]
}

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