Organization repository on GitHub
Jev + espresso machine + state machine (XState)
- Forks
- 6
- Last pushed
- Updated Oct 2026
Repo stats from the GitHub API, cached Oct 2026.Homepage
CommunityJev Demos & Experiments
Jevspresso
A playable espresso bar where an XState machine models what the hardware can do next and Jev picks the move, from a plain-language order or after you break the machine.
- Stars
- 25
- Language
- TypeScript
- Published by
- Community
- Author
- David Khourshid
- Last verified
- Oct 2026
Works forJev for Realtime control
Used inJev for Gaming
- Languages
- TypeScript
Highlights
- XState models what is physically possible at the bar; Jev only chooses the next move from that set.
- Legal moves include grind, tamp, pull the shot, steam the milk, and serve.
- You can order in plain language, run the bar yourself, or break equipment and watch Jev cope.
- Source is statelyai/jevspresso in TypeScript, created 3 October 2026.
Watch out
A demonstration, not a product: it exists to show a state machine constraining a decision model rather than to actually make coffee.
Questions about this entry
Short answers drawn from the linked project or page.
XState defines the legal moves at each point of the bar, so Jev is only ever asked to choose among actions that are currently possible, such as grind, tamp, pull, steam, or serve.
The author describes three modes: order in plain language and let Jev run the bar, work the bar yourself, or deliberately break the equipment and watch Jev respond to the reduced state.
TypeScript, with XState for the state machine and Jev for the choice. The repository is statelyai/jevspresso, created on 3 October 2026, and the playable site is jevspresso.dev.
Yes. The code is public at github.com/statelyai/jevspresso under the Stately organization, and the author is David Khourshid, the creator of XState; the hosted demo is free to play.
That a state machine can bound a decision model: Jev never invents an action outside the machine's current options, so its judgment stays inside a set the surrounding code considers safe.
The directory listed about 25 stars and 6 forks on 8 October 2026, and the launch post on X drew roughly 501 likes; both figures move as the repository and post age.
No key is needed for the hosted demo at jevspresso.dev. Running the repository yourself means supplying your own TypeSafe credentials for the Jev requests.
Reactions & coverage
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X: Jevspresso: XState sets the options, Jev picks the next move at an espresso bar.
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