callstack/agent-device

Mobile app verification for AI agents.

A device automation CLI for real apps on iOS, Android, TV, web, and desktop. Agents get token-efficient snapshots, semantic refs, and evidence captured only when needed.

agent-device lets coding agents open apps, inspect the current UI, interact with visible elements, and collect debugging evidence through one CLI. Use it when an agent needs to verify what actually happens on a device, not just reason about code.

The CLI is the agent's hands, eyes, and evidence collector; it is not the brain. Your coding agent or QA harness reads the task, interprets the current screen, chooses the next command, and decides whether the result satisfies the test. agent-device keeps that loop grounded in structured accessibility data, deterministic actions, and files an engineer can inspect.

If you know Vercel's agent-browser, agent-device is the same idea for mobile, TV, and desktop apps. Minimal --platform web support reuses agent-browser when a browser session needs to fit into the same command/session/replay loop.

It works with native iOS and Android apps, plus apps built with Expo, Flutter, and React Native, as long as the target can run on a supported device, simulator, emulator, or desktop environment.