GitHub · by David K

Jevspresso

An espresso bar where a state machine sets the options and Jev picks one.

David K 🎹

@DavidKPiano

I mixed Jev + an espresso (state) machine. Turns out, Jev's a pretty good barista ☕ Introducing Jevspresso: XState determines what's possible, Jev decides the next move. Order in plain language, or break stuff and watch Jev cope. Try it: jevspresso.dev

Oct 3, 2026 · 500 likesOpen on X

David K's simulated espresso bar, from the Stately team. An XState machine models what is physically possible at the bar, and Jev only chooses the next move from those options: grind, tamp, pull the shot, steam the milk, serve. Order in plain language, work the bar yourself, or break the equipment and watch Jev cope. It is playable at jevspresso.dev.