Interaction types

This reference provides information about interaction types, field descriptions, error handling, examples, and other specification requirements.

Schema Info

• "schema": "st-schema"
• "version": "1.0"

Interaction Types

The interaction type is located in the payload headers.interactionType. The token context for the request in indicated in authentication.token.

You must implement the following SmartThings interaction types:

• Discovery: SmartThings requests a list of devices.
• State Refresh: SmartThings requests the states of the indicated devices.
• Command: SmartThings requests that you issue commands for the indicated devices.

Optional Interaction Types

• Callback: (Optional) Allows a third-party partner to push device state to SmartThings.
• Discovery callback: (Optional) Allows a third-party partner to perform on-demand discovery.
• Reciprocal access token: (Optional) Receive and refresh access tokens for use with a Callback interaction. Required for devices to qualify for Works with SmartThings certification.
• Integration deleted: (Optional) Notification to partner when connected service is deleted.

Discovery

Discovery is the first SmartThings request. Handle this request by retrieving a list of devices.

Example request

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "discoveryRequest",
    "requestId": "abc-123-456"
  },
  "authentication": {
    "tokenType": "Bearer",
    "token": "token received during oauth from partner"
  }
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• authentication
  • tokenType: Token type.
  • token: Token issued by third-party cloud; the context for the request.

In the response payload header, include the matching requestId from the request. Also include the schema, version and corresponding interactionType (e.g. discoveryResponse).

Be sure to also include the payload requested. For the Discovery request, you need to include a list of devices (as seen in the below example).

Example response

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "discoveryResponse",
    "requestId": "abc-123-456"
  },
  "devices": [
    {
      "externalDeviceId": "pdevice-1",
      "deviceCookie": {"updatedcookie": "old or new value"},
      "friendlyName": "Kitchen Bulb",
      "manufacturerInfo": {
        "manufacturerName": "LIFX",
        "modelName": "A19 Color Bulb",
        "hwVersion": "v1 US bulb",
        "swVersion": "23.123.231"
      },
      "deviceContext": {
        "roomName": "Kitchen",
        "groups": ["Kitchen Lights", "House Bulbs"],
        "categories": ["light", "switch"]
      },
      "deviceHandlerType": "c2c-rgbw-color-bulb"
    },
    {
      "externalDeviceId": "pdevice-2",
      "friendlyName": "Toaster",
      "manufacturerInfo": {
        "manufacturerName": "LIFX",
        "modelName": "Outlet",
        "hwVersion": "v1 US outlet",
        "swVersion": "3.03.11"
      },
      "deviceContext": {
        "roomName": "Living Room",
        "groups": ["Hall Lights"],
        "categories": ["light"]                
      },
      "deviceHandlerType": "c2c-rgbw-color-bulb"
    }
  ]
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• devices: Array of devices for user account.
  • externalDeviceId: Device ID at third-party cloud.
  • deviceCookie: Pass-through cookie for setting custom key/value pairs. Should not contain personally identifiable information and cannot be greater than 5 KB.
  • friendlyName: (Optional) Label of the device shown to the user.
  • manufacturerInfo: Manufacturer info for the device.
    • manufacturerName: Name of the manufacturer, preferably partner name.
    • modelName: Unique model number that identifies the device model.
    • hwVersion: (Optional) Hardware version.
    • swVersion: (Optional) Software/firmware version.
  • deviceContext: (Optional) Device context info.
    • roomName: Location name associated with the device.
    • groups: Groups that include the device.
    • categories: (Optional) Categories associated with the device.
  • deviceHandlerType: Device handler type name. When using a custom device profile, the value should be the device profile ID.

State Refresh

Handle the State Refresh request by retrieving the device states for the indicated list of devices.

Example request

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "stateRefreshRequest",
    "requestId": "abc-123-456"
  },
  "authentication": {
    "tokenType": "Bearer",
    "token": "token received during oauth from partner"
  },
  "devices": [
    {
      "externalDeviceId": "partner-device-id-1",
    },
    {
      "externalDeviceId": "partner-device-id-2"
    }
  ]
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• authentication: See above.
• deviceState: Array of device states. See below.

Example response

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "stateRefreshResponse",
    "requestId": "abc-123-456"
  },
  "deviceState": [
    {
      "externalDeviceId": "pdevice-1",
      "deviceCookie": {},
      "states": [
        {
          "component": "main",
          "capability": "st.switch",
          "attribute": "switch",
          "value": "on"
        },
        {
          "component": "main",
          "capability": "st.switchLevel",
          "attribute": "level",
          "value": 80
        },
        {
          "component": "main",
          "capability": "st.healthCheck",
          "attribute": "healthStatus",
          "value": "online"
        },
        {
          "component": "main",
          "capability": "st.colorControl",
          "attribute": "hue",
          "value": 0
        },
        {
          "component": "main",
          "capability": "st.colorControl",
          "attribute": "saturation",
          "value": 0          
        }
        {
          "component": "main",
          "capability": "st.colorTemperature",
          "attribute": "colorTemperature",
          "value": 3500
        }        
      ]
    }
  ]
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• deviceState: Array of device states.
  • externalDeviceID: Third-party device ID.
  • states
    • component: Component of device. In most cases, the value will be "main".
    • capability: Capability of device. Use the syntax st.<capabilityName>.
    • attribute: Attribute of Capability.
    • value: The resource value.

Command

Handle the Command request by triggering the commands for the list of devices.

Example request

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "commandRequest",
    "requestId": "abc-123-456"
  },
  "authentication": {
    "tokenType": "Bearer",
    "token": "token-received during oauth from partner"
  },
  "devices": [
    {
      "externalDeviceId": "partner-device-id",
      "deviceCookie": {
        "lastcookie": "cookie value"
      },
      "commands": [
        {
          "component": "main",
          "capability": "st.colorControl",
          "command": "setColor",
          "arguments": [
            {
              "saturation": 91,
              "hue": 0.8333333333333334
            }
          ]
        },
        {
          "component": "main",
          "capability": "st.switchLevel",
          "command": "setLevel",
          "arguments": [80]
        },
        {
          "component": "main",
          "capability": "st.switch",
          "command": "on",
          "arguments": []
        }
      ]
    }
  ]
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• authentication: See above.
• devices
  • externalDeviceId: Device ID on third-party cloud.
  • deviceCookie: Received in the Discovery response.
  • commands: Array of commands.
    • component: Component of device. In most cases, the value will be "main".
    • capability: Capability of device. Use the syntax st.<capabilityName>.
    • command: Command name.
    • arguments: Array containing command arguments. If not applicable to the capability/attribute, will be empty.

Example response

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "commandResponse",
    "requestId": "abc-123-456"
  },
  "deviceState": [
    {
      "externalDeviceId": "partner-device-id",
      "deviceCookie": {},
      "states": [
        {
          "component": "main",
          "capability": "st.colorControl",
          "attribute": "hue",
          "value": 0.8333333333333334
        },
        {
          "component": "main",
          "capability": "st.switch",
          "attribute": "switch",
          "value": "off"
        },
        {
          "component": "main",
          "capability": "st.switchLevel",
          "attribute": "level",
          "value": 80
        },
        {
          "component": "main",
          "capability": "st.healthCheck",
          "attribute": "healthStatus",
          "value": "online"
        }
      ]
    }
  ]
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• deviceState: (Optional) Array of device states. See above.

Example response (device error)

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "<interactionResponse>",
    "requestId": "abc-123-456"
  },
  "deviceState": [
    {
      "externalDeviceId": "pdevice-1",
      "deviceError": [
        {
          "errorEnum": "DEVICE-DELETED",
          "detail": "more detail from the partner"
        }
      ]
    },
   {
      "externalDeviceId": "pdevice-2",
      "states": [...]
    }
  ]
}

• deviceError
  • errorEnum: Device error enum. See Error responses.
  • detail: Error details.

Example response (global error)

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "<interactionResponse>",
    "requestId": "abc-123-456"
  },
  "globalError": {
    "errorEnum": "TOKEN-EXPIRED",
    "detail": "more detail from the partner"
  }
}

• globalError
  • errorEnum: Global error enum. See Error responses.
  • detail: Error details.

Callback

Callback interactions allow a third-party partner to push the latest device state information to SmartThings.

Device State Callback

JSON will be set by the partner to the SmartThings cloud without any request from SmartThings. This should be used to update the state of the device that may have changed from an interaction caused by a non-SmartThings command (i.e command originating from the partner’s cloud triggered by a command from the native app or by manually controlling the device).

Example request

{
    "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "stateCallback",
        "requestId": "abc-123-456"
    },
    "authentication": {
        "tokenType": "Bearer",
        "token": "token-received from SmartThings for callbacks"
    },
    "deviceState": [
        {
            "externalDeviceId": "pdevice-1",
            "states": [
                {
                    "component": "main",
                    "capability": "st.switch",
                    "attribute": "switch",
                    "value": "on",
                    "timestamp": 1568248946010
                },
                {
                    "component": "main",
                    "capability": "st.switchLevel",
                    "attribute": "level",
                    "value": 80,
                    "timestamp": 1568249946020
                },
                {
                    "component": "main",
                    "capability": "st.healthCheck",
                    "attribute": "healthStatus",
                    "value": "online",
                    "timestamp": 1568251946030
                }
            ]
        },
        {
            "externalDeviceId": "pdevice-2",
            "states": [
                {
                    "component": "main",
                    "capability": "st.switch",
                    "attribute": "switch",
                    "value": "off",
                    "timestamp": 1568254946010
                },
                {
                    "component": "main",
                    "capability": "st.switchLevel",
                    "attribute": "level",
                    "value": 80,
                    "timestamp": 1568255946020
                },
                {
                    "component": "main",
                    "capability": "st.healthCheck",
                    "attribute": "healthStatus",
                    "value": "offline",
                    "timestamp": 1568257946030
                }
            ]
        }
    ]
}

• headers: See above.
• authentication
  • tokenType: Token type.
  • token: Token received from SmartThings.
• deviceState: (Optional) Array of device states.
  • externalDeviceID: Third-party device ID.
  • deviceCookie: (Optional) Pass-through cookie for setting custom key/value pairs. Should not contain personally identifiable information.

Discovery Callback

A discovery callback interaction allows a third-party partner to perfom on-demand discovery of devices.

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• authentication
  • tokenType: Token type.
  • token: Token issued by third-party cloud; the context for the request.

Example response

{
  "headers": {
      "schema": "st-schema",
      "version": "1.0",
      "interactionType": "discoveryCallback",
      "requestId": "abc-123-456"
  },
  "authentication": {
      "tokenType": "Bearer",
      "token": "token-recevied from SmartThings for callbacks"
  },
  "devices": [
    {
      "externalDeviceId": "pdevice-1",
      "deviceCookie": {"updatedcookie": "old or new value"},
      "friendlyName": "Kitchen Bulb",
      "manufacturerInfo": {
        "manufacturerName": "LIFX",
        "modelName": "A19 Color Bulb",
        "hwVersion": "v1 US bulb",
        "swVersion": "23.123.231"
      },
      "deviceContext" : {
        "roomName": "Kitchen",
        "groups": ["Kitchen Lights", "House Bulbs"]
      },
      "deviceHandlerType": "c2c-rgbw-color-bulb"
  },
  {
      "externalDeviceId": "pdevice-2",
      "deviceCookie": {"updatedcookie": "old or new value"},
      "friendlyName": "Toaster",
      "manufacturerInfo": {
        "manufacturerName": "LIFX",
        "modelName": "Outlet",
        "hwVersion": "v1 US outlet",
        "swVersion": "3.03.11"
      },
      "deviceContext" : {
        "roomName": "Living Room",
        "groups": ["Hall Lights"]
      },
      "deviceHandlerType": "<DEVICE-PROFILE-ID>"
    }
  ]
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• devices: Array of devices for user account.
  • externalDeviceId: Device ID at third-party cloud.
  • deviceCookie: Pass-through cookie for setting custom key/value pairs. Should not contain personally identifiable information and cannot be greater than 5 KB.
  • friendlyName: (Optional) Label of the device shown to the user.
  • manufacturerInfo: Manufacturer info for the device.
    • manufacturerName: Name of the manufacturer, preferably partner name.
    • modelName: Unique model number that identifies the device model.
    • hwVersion: (Optional) Hardware version.
    • swVersion: (Optional) Software/firmware version.
  • deviceContext: (Optional) Device context info.
    • roomName: Location name associated with the device.
    • groups: Groups that include the device.
    • categories: (Optional) Categories associated with the device.
  • deviceHandlerType: Device handler type name. When using a custom device profile, the value should be the device profile ID.

Reciprocal Access Token

When SmartThings receives an access token (obtained in an OAuth integration) from a third party, it sends a callback authentication code as below. The third party can use this code to request callback access tokens.

Grant callback access example

{
    "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "grantCallbackAccess",
        "requestId": "abc-123-456"
    },
    "authentication" : {
        "tokenType": "Bearer",
        "token": "Token received during oauth from partner"
    },
    "callbackAuthentication": {
        "grantType": "authorization_code",
        "scope": "callback_access",
        "code": "xxxxxxxxxxx",
        "clientId": "Client ID given to partner in Workspace during app creation"
    },
    "callbackUrls": {
        "oauthToken": "Callback URL for access-token-request.json and refresh-access-tokens.json requests",
        "stateCallback": "Callback URL for state-callback.json updates"
    }
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• authentication:
  • tokenType: Token type.
  • token: Token issued by third-party cloud; the context for the request.
• callbackAuthentication:
  • grantType: Authorization type.
  • scope: Authorization scope.
  • code: Authorization code to be used in accessTokenRequest interaction.
  • clientId: Client ID.
• callbackUrls:
  • oauthToken: Callback URL used in accessTokenRequest and refreshAccessTokens interactions.
  • stateCallback: Callback URL for providing state callbacks.

Use an HTTPS POST call to the above oauthToken URL to request a callback access token. A third party uses the callback access token to call into SmartThings Cloud.

Example access token request

{
    "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "accessTokenRequest",
        "requestId": "abc-123-456"
    }, 
    "callbackAuthentication": {
        "grantType": "authorization_code",
        "code": "xxxxxxxxxxx",
        "clientId": "client id given to partner in dev-workspace during app creation",
        "clientSecret": "client secret given to partner in dev-workspace during app creation"
    }
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• callbackAuthentication:
  • grantType: Authorization type.
  • code: Authorization code (provided in grantCallbackAccess interaction).
  • clientId: Client ID.
  • clientSecret: Client secret (obtained in Developer Workspace).

Example access token response

{
    "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "accessTokenResponse",
        "requestId": "abc-123-456"
    }, 
    "callbackAuthentication": {
        "tokenType": "Bearer",
        "accessToken": "xxxxxxxxxxx",
        "refreshToken": "yyyyyyyyyyy",
        "expiresIn": 86400
    }
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• callbackAuthentication:
  • tokenType: Token type.
  • accessToken: Access token used in callback interactions.
  • refreshToken: Refresh token.
  • expiresIn: Expiration time (in seconds).

If the access token has expired, use the provided refreshToken to request a new access token at the oauthToken URL used previously.

Refresh access token example

{
    "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "refreshAccessTokens",
        "requestId": "abc-123-456"
    }, 
    "callbackAuthentication": {
        "grantType": "refresh_token",
        "refreshToken": "xxxxxxxxxxx",
        "clientId": "client id given to partner in dev-workspace during app creation",
        "clientSecret": "client secret given to partner in dev-workspace during app creation"
    }
}

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• callbackAuthentication:
  • grantType: Authorization type.
  • refreshToken: Refresh token.
  • clientId: Client ID.
  • clientSecret: Client secret (obtained in Developer Workspace).

Interaction Result

Notification to the partner where issues are found in the response on a request from SmartThings Schema.

1. authentication: is not provided for users / interatctions that ST schema has not been able to obtain valid access tokens from the partner.
2. originatingInteractionType: the interaction type causing the interactionResult to be sent.
3. globalError: only sent if there was a major issue with the originatingInteractionType message.
4. deviceState: only sent for and when there are issues with individual devices, devices with no issues will not be included.

{
    "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "interactionResult",
        "requestId": "abc-123-456"
    },
    "authentication": {
        "tokenType": "Bearer",
        "token": "token-recevied during oauth from partner"
    },
    "originatingInteractionType" : <interactionResponse>,
    "globalError": {
        "errorEnum": "<enum>",
        "detail": "messageDetail"
    },
    "deviceState": [
        {
            "externalDeviceId": "pdevice-1",
            "deviceError": [
                {
                    "errorEnum": "<enum>",
                    "detail": "messageDetail"
                }
            ]
        }
    ]
}

Integration Deleted

Notification to partner when connected service is deleted.

    {
      "headers": {
        "schema": "st-schema",
        "version": "1.0",
        "interactionType": "integrationDeleted",
        "requestId": "abc-123-456"
      },
      "authentication": {
        "tokenType": "Bearer",
        "token": "token received during oauth from partner"
      }
    }

    204 No Content

• headers
  • schema: Schema type.
  • version: Schema version.
  • interactionType: Interaction type of payload.
  • requestId: Matching request ID from request.
• authentication
  • tokenType: Token type.
  • token: Token issued by third-party cloud; the context for the request.

Error Responses

Errors can be appended using global errors or device errors in your interaction type response.

Example global error

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "stateRefreshResponse",
    "requestId": "abc-123-456"
  },
  "authentication": {
    "tokenType": "Bearer",
    "token": "token-issued-by-3rd-party"
  },
  "globalError": {
    "errorEnum": "TOKEN-EXPIRED",
    "detail": "The token has expired"
  },
  "deviceState": []
}

Append a globalError field to the root of your JSON response for an interaction type.

• errorEnum: Global error enum type (see below).
• details: Message for the error.

Global error enum types

• TOKEN-EXPIRED: Token has expired.
• INTEGRATION-DELETED: User has removed the integration, so both accessToken and refreshToken are invalid. Used to indicate user needs to re-authorize.
• BAD-REQUEST: Bad request. Example detail values: st-schema body is missing, JSON parse of body failed, missing st-schema headers, missing st-schema authentication
• INVALID-TOKEN
• INVALID-INTERACTION-TYPE
• UNSUPPORTED-GRANT-TYPE
• INVALID-CODE
• INVALID-CLIENT-SECRET
• INVALID-CLIENT

Example device error

{
  "headers": {
    "schema": "st-schema",
    "version": "1.0",
    "interactionType": "stateRefreshResponse",
    "requestId": "abc-123-456"
  },
  "authentication": {
    "tokenType": "Bearer",
    "token": "token-issued-by-3rd-party"
  },
  "deviceState": [
    {
      "externalDeviceId": "pdevice-1",
      "deviceError": [
        {
          "errorEnum": "DEVICE-DELETED",
          "detail": "more detail from the partner"
        }
      ]
    }
  ]
}

Append a deviceError field to the stateRefreshResponse or commandResponse interaction response.

• errorEnum: Device error enum type (see below).
• details: Message for the error.

Device error enum types

• DEVICE-DELETED: Device is deleted and cannot accept commands.
• RESOURCE-CONSTRAINT-VIOLATION: Value is out of range or not acceptable.
• DEVICE-UNAVAILABLE: Device is unavailable because of a f/w update, maintenance, etc. For use when temporarily unavailable for known reasons.
• CAPABILITY-NOT-SUPPORTED: Command requested is not supported by the device.