Observed arrival · 2026-09-24
Yui gives agents a screen to draw
Yui is a native iPhone app where connected AI agents can send interactive screens—timers, forms, and choices—instead of text-only replies.
- For
- People running Hermes agents on their own computers
- Worth noticing
- The project reports that Yui Lines used 1.6× fewer tokens than minified JSON across ten real screens.
Field notes
The homepage describes a native iPhone beta that connects to Hermes profiles running on a user's computer through a small plugin; each profile appears as an agent. Agents send compact Yui Lines, which the app maps to native presets rather than receiving JSON or a component tree. The project reports a ten-screen benchmark showing 1.6× fewer tokens than minified JSON, and its MVP board lists 19 of 22 cards shipped. Support for OpenClaw and a starter agent are described as later work.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue