# Available Context keys

As mentioned [here](pipes2-endpoint-implementation-guide.md), you can add a list of context keys to a given endpoint.
Bellow you can find the list of available endpoints that come out of the box from the Zapp SDK.

:::info
Please note that a Quick Brick plugin can add extra context keys that can be added to an endpoint.
To find out if a given plugin declared a new endpoint, please refer to the plugin API or manifest
:::

| Context Key             | Description                                                                                                                                                                                                                              | Example                                                                                                                                                                        |
| ----------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| `bundleIdentifier`      | The unique App identifier of an app as used in the store(aka as Package Name for Android)                                                                                                                                                | com.yourapp                                                                                                                                                                    |
| `advertisingIdentifier` | The unique identifier of a specific device. _Note that on Apple devices (iOS/tvOS) this might not be available based on [user's permission to grant data collection](https://developer.apple.com/app-store/user-privacy-and-data-use/)._ | 2b292db3-2f84-4a2c-aa08-0641730e5d06                                                                                                                                           |
| `uuid`                  | Unique installation identifier of a specific device. _Note that this value is not persistent across app reinstalls._                                                                                                                     | 2b292db3-2f84-4a2c-aa08-0641730e5d06                                                                                                                                           |
| `osVersion`             | The device OS version                                                                                                                                                                                                                    | 15.0                                                                                                                                                                           |
| `deviceModel`           | The device model                                                                                                                                                                                                                         | iPhone X                                                                                                                                                                       |
| `deviceMake`            | The device make                                                                                                                                                                                                                          | iPhone                                                                                                                                                                         |
| `deviceName`            | The device name                                                                                                                                                                                                                          | John's iPhone                                                                                                                                                                  |
| `deviceType`            | The device type (`mobile`, `tablet`, `tv`, `web`, `other`)                                                                                                                                                                               | mobile                                                                                                                                                                         |
| `userAgent`             | User agent _(Note that user-agent value for tvOS is different from other platforms, as it is provided by the operating system itself, due to the absence of a built-in web browser on tvOS devices.)_                                    | Mozilla/5.0 (iPhone; CPU iPhone OS 15*0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/15E148 **Example for tvOS:** AppName/1 CFNetwork/758.1.2 Darwin/15.0.0* |
| `deviceWidth`           | The device screen width in pixels                                                                                                                                                                                                        | 360                                                                                                                                                                            |
| `deviceHeight`          | The device screen height in pixels                                                                                                                                                                                                       | 640                                                                                                                                                                            |
| `timeZoneOffset`        | The UTC offset of the device. the format corresponds to the `Z` [offset](https://www.w3.org/TR/timezone/#representing)                                                                                                                   | UTC+01:00                                                                                                                                                                      |
| `platform`              | The device platform SDK - `ios`, `android`, `amazon_fire_tv`, `android_tv`, `tvos`, `roku`, `samsung_tv`, `lg_tv`.                                                                                                                       | android                                                                                                                                                                        |
| `sdk_version`           | The SDK version of the app                                                                                                                                                                                                               | 1.0.0                                                                                                                                                                          |
| `version_name`          | The version number of the running app                                                                                                                                                                                                    | 1.0.0                                                                                                                                                                          |
| `layoutId`              | The current layout id of the device                                                                                                                                                                                                      | 497fe2c4-b773-4cac-896c-4a33da70b931                                                                                                                                           |
| `isDebug`               | If the current version running on the app is a debug version                                                                                                                                                                             | true                                                                                                                                                                           |
| `languageCode`          | [ISO 639-1](https://en.wikipedia.org/wiki/List_of_ISO_639-1_codes) representation of language code used by device                                                                                                                        | en                                                                                                                                                                             |
| `languageLocale`        | Locale used by device                                                                                                                                                                                                                    | en_GB                                                                                                                                                                          |
| `store`                 | Default app store used by a device                                                                                                                                                                                                       | google_play                                                                                                                                                                    |
| `isDebug`               | If the current version running on the app is a debug version                                                                                                                                                                             | true                                                                                                                                                                           |
| `signedDeviceInfoToken` | A signed [JWT](https://en.wikipedia.org/wiki/JSON_Web_Token) that holds device info including the [country code](https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2) where the end user is located. **On native platforms** (all Android-based, Apple, and Roku platforms), this token is provided by the Applicaster DI Token plugin — if the plugin is not installed in the app, this key will be missing from the context. **On WebTV platforms** (e.g. Samsung TV, LG TV), the token is built in and always available. | -                                                                                                                                                                              |
| `browser` | **Only For Web** - get the user's browser. This is typically used if you need to set a different stream for Safari and iOS browsers (Note that all iOS browsers are considered `safari`).                                                  | safari                                                                                                                                                                              |