Agentic interaction using AppFunctions

Given the rise of agentic interaction on Android, we need a fast, reliable API to make app capabilities discoverable and executable by agents. Through the years, Google has introduced several native frameworks to bridge the gap between the operating system, its system-level assistants, and apps. App Actions is the long-standing predecessor to AppFunctions. It uses shortcuts.xml and built-in intents to map specific user requests directly to app features. Android Slices were an attempt to surface interactive snippets of an app’s UI directly within the assistant or search interface; they have been effectively deprecated since 2021. Then there's the Direct Actions API, a framework introduced to allow voice assistants to query a foreground app for its specific capabilities in real-time. Gone too. Finally, the Assist API: the fundamental system-level hook that allows a native agent to read the screen context, providing the situational awareness necessary for agents to act on behalf of the us