# Smart Home Scene Guide

`action.devices.types.SCENE` - In the case of scenes, the type maps 1:1 to the trait, as scenes don't combine with other traits to form composite devices. Scenes should always have user-provided names. Each scene is its own virtual device, with its own name(s).

This type indicates that the device gets the Scene icon and some related
synonyms and aliases.

> [!NOTE]
> **Note:** The Scene trait does not currently support `Report State` calls. Actions utilizing only the Scene trait, do not qualify for certification or release.

See the [Scene trait](https://developers.home.google.com/cloud-to-cloud/traits/scene) for more information.

## Device capabilities

Refer to the corresponding trait documentation for
implementation details, such as attributes and states that your service should support, and how to
build EXECUTE and QUERY responses.

### Required traits

These traits and commands are required, if applicable to your
device. If your device does not support these traits, enter the error code of
`functionNotSupported` in a QUERY or EXECUTE response. See
[Errors and exceptions](https://developers.home.google.com/cloud-to-cloud/intents/errors-exceptions) for more info.

- [`action.devices.traits.Scene`](https://developers.home.google.com/cloud-to-cloud/traits/scene)

## Example device: Simple scene

This section contains example intent payloads representing a common "Scene"
based on the device type and traits above. If you add or remove traits in your implementation,
modify your responses accordingly to reflect those changes.

### Sample SYNC response

Request

```
{
  "requestId": "6894439706274654512",
  "inputs": [
    {
      "intent": "action.devices.SYNC"
    }
  ]
}
```
Response

```
{
  "requestId": "6894439706274654512",
  "payload": {
    "agentUserId": "user123",
    "devices": [
      {
        "id": "123",
        "type": "action.devices.types.SCENE",
        "traits": [
          "action.devices.traits.Scene"
        ],
        "name": {
          "name": "Simple scene"
        },
        "willReportState": true,
        "attributes": {
          "sceneReversible": true
        },
        "deviceInfo": {
          "manufacturer": "smart-home-inc",
          "model": "hs1234",
          "hwVersion": "3.2",
          "swVersion": "11.4"
        }
      }
    ]
  }
}
```

### Sample QUERY response

Request

```
{
  "requestId": "6894439706274654514",
  "inputs": [
    {
      "intent": "action.devices.QUERY",
      "payload": {
        "devices": [
          {
            "id": "123"
          }
        ]
      }
    }
  ]
}
```
Response

```
{
  "requestId": "6894439706274654514",
  "payload": {
    "devices": {
      "123": {
        "status": "SUCCESS",
        "online": true
      }
    }
  }
}
```

### Sample EXECUTE commands

#### ActivateScene

For additional details on the command parameters,
see the [`action.devices.traits.Scene`](https://developers.home.google.com/cloud-to-cloud/traits/scene#action.devices.commands.activatescene) reference.
Request

```
{
  "requestId": "6894439706274654516",
  "inputs": [
    {
      "intent": "action.devices.EXECUTE",
      "payload": {
        "commands": [
          {
            "devices": [
              {
                "id": "123"
              }
            ],
            "execution": [
              {
                "command": "action.devices.commands.ActivateScene",
                "params": {
                  "deactivate": false
                }
              }
            ]
          }
        ]
      }
    }
  ]
}
```
Response

```
{
  "requestId": "6894439706274654516",
  "payload": {
    "commands": [
      {
        "ids": [
          "123"
        ],
        "status": "SUCCESS",
        "states": {
          "online": true
        }
      }
    ]
  }
}
```

## Device ERRORS

See the full list of [errors and exceptions](https://developers.home.google.com/cloud-to-cloud/intents/errors-exceptions).