The TestFairy SDK can be integrated with Appium scripts to enable mobile beta testing solutions for developers and SDETs. The integration is based on the principle that Appium can start Android services by constructing intents over adb, which can hold extra arguments for services to interpret. A simple service is created to parse incoming intent data to decide which TestFairy SDK method to invoke. The service reads the intent, invokes the TestFairy SDK, and stops itself once the work is done without interrupting any running activities. To integrate with Appium scripts, developers need to copy the "Appium calls TestFairy" file into their Android app project, add a service declaration to the manifest, and update their Appium script with helpers for invocation of TestFairy methods such as `begin()`, `stop()`, and `addEvent()`. The TestFairyService parses the bundled Intent extra and invokes the corresponding TestFairy SDK method based on the received arguments. Once the call is done, the service stops to conserve resources.