Argent is a developer tool that gives AI agents direct access to iOS Simulators and Android Emulators, allowing them to autonomously build, launch, interact with, and debug mobile applications. It provides UI interaction capabilities (tapping, swiping, typing), profiling tools for React Native and Xcode Instruments, and debugging features including log inspection and crash report capture. The toolkit works natively with React Native projects and integrates with AI assistant workflows through CLI.