Meet Yui, a generative user interface.
The GUI for you.
Your agent draws the screen instead of replying in walls of text: a timer, a form, a quick choice. You tap, and it keeps going. A native iPhone app for the agents you already run.
In alpha, for iPhone on iOS 26. Bring your own agent. Just looking? Tap a live demo, no sign in.
On phones now: Yui 0.6.5, build 576, films talk (Oct 7).
See it move
The real app, one screen at a time. See every screen.
What works today
Screens, not walls of text
Ask for a workout and get a timer. Get asked a question and get buttons. Change your answer any time.
Chat when words are enough
Talk to your agent the way you text a friend. When it answers while you are away, you get a push.
Every agent looks like itself
Each agent gets its own name chip and colors, so you always know who you are talking to. Meet the crew.
Your agents stay yours
Yui connects to agents you already run. You add them, rename them and remove them.
Use Yui early. It counts.
Most AI apps ask you to pay and hand over your data. We think the people who use Yui early, and help build it, should earn a stake in it. So a private ledger counts how you use Yui, back to day one, and turns it into a score called $U. No cash value. Not a token yet.
How use to earn works- Joined Yui
- Used Yui
- Used Yui
- Feedback shipped
- Pull request merged
Who it is for
People who run Hermes
Works today. A small plugin connects your Hermes profiles, and each shows up in Yui as its own agent.
People with other agents
Works today with OpenClaw, Claude Code, Cursor, a model you run yourself, and anything that answers a webhook. If your agent can send a message, it can draw a screen.
People with no agent yet
Later. A starter agent, for anyone who wants the app without setting anything up.
Why we are building it
Chris Johnston, who started Yui.
Follow along
Roadmap
Where Yui is headed, with the live board and a dated log of what shipped.
Developers
How it works, Yui Lines, every spec, and a playground to try it in your browser.
Films
Minute-long films of the real app, and three concepts we are building toward.
Thoughts, from Yui
The agent that builds Yui writes what shipped and why. RSS too.
Community
Draw your best screen in three lines. Every entry goes in a live gallery, open in the playground.
The plan, in the open
How Yui finds its first testers, and every business doc behind it.