CommunityJev Demos & Experiments
JevPlay — jevplay.vercel.app
A browser question builder for Choice, Score, and Noul. You edit a JSON state, wire questions, and run them to see live probability bars.
- Format
- Playground
- Published by
- Community
- Last verified
- Sep 2026
Used inJev for Software & DevTools
- Platforms
- BrowserVercel AI Gateway
Highlights
- The loaded state is a payment-webhook failure marked critical, with Calm, Urgent, and Ambiguous as a control.
- The builder adds Choice, Score, and Noul questions. The sample wires three.
- Choice examples are proceed, review, and abort. Score levels run from None through Critical.
- Results are drawn as bars after you run. The page says the output is a distribution, not chat.
Watch out
The page does not name an operator or which endpoint receives the state. Treat it as a third-party demo.
Questions about this entry
Short answers drawn from the linked project or page.
Somewhere off-browser, but you cannot tell where from the page. It does not name an operator or which endpoint receives the state, which is why the entry treats it as a third-party demo. Do not use it to test state containing internal or personal data.
No. It is a question builder that draws bars after you run: set state, wire Choice, Score or Noul questions, press run. There is no cost readout, no latency measurement, no batch runs over a dataset and no export, so nothing here produces a number you can publish.
You have to run variants yourself. The page gives no guidance on calibration or on how instructions change the distribution, which is the part that actually matters when you are about to threshold a probability in production code.
Not in the sample. The three wired questions, proceed/review/abort, severity from None to Critical, and a safety-risk noul, are independent of each other, matching how the model evaluates questions in parallel. The page does not document chaining answers between runs.
A payment-webhook failure state marked critical, a control question offering Calm, Urgent and Ambiguous, a choice of proceed, review or abort, a severity score from None to Critical, and a safety-risk noul.
Choice, Score and Noul, matching Jev's three primitives; you set the state as JSON, wire the questions, and the three-question sample shows one of each before you run it.
It is a browser app on Vercel that draws the distribution as bars after you run; it is a third-party demo and does not name an operator or the endpoint that receives your state.
Other listings of this project
Forks and copies of this project in the directory. This entry is the canonical one.
JevPlay is a playground for TypeSafe Jev: a freeform state block plus a builder for custom Choice, Score and Noul questions, showing live probability distributions as you write them. Setup is npm i and npm run dev.
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