Reddit thread: mobile agents should read the screen, not call APIs
Skyroads_15 · reddit · 2026-08-29
An contrarian take on mobile agents: giving AI ever-deeper OS access may not be the end goal.
- Most automation relies on explicit interfaces (APIs, ADB, accessibility), which break when apps redesign or APIs change. Humans use phones with zero API knowledge — they just look at the screen and tap.
- The author cites the GitHub project aiden-firmware: instead of per-app integrations, it uses hardware to capture the actual screen, lets the model understand what it sees, and sends actions back via USB HID — see → understand → decide → interact like a human. No ADB, no root.
- Caveats: slower than direct API calls, visual reasoning can err, and for repetitive tasks with stable APIs it's overengineering.
- But for a truly general-purpose agent that can figure out an unseen device by observation, understanding the screen may matter more than deeper system access.
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