What it is
A Next.js UI for showing and telling TypeSafe System One (Jev) use cases, deployable to Vercel. Bring your own key: visitors paste their own TYPESAFE_API_KEY, stored only in localStorage.
How it uses Jev
Jev makes decisions on support tickets, claims, notes, and sentences. For example, Noul judges if a ticket is about billing; Choice checks claims against policy documents; Score rates passive-aggressiveness. Results are used in Server Actions that construct a TypeSafeClient per request.
Primitives:choicescorenoul
Technique worth stealing
Using the model's uncertainty as a game mechanic, e.g., Sentence Jenga where the probability is the tower's structural integrity.
Try it
npm install && npm run dev, then paste a TYPESAFE_API_KEY into the top bar.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.94
- Shows a System One patternyes0.77
- Handles uncertaintyno0.04
- Measuredno0.06
- Runnableyes0.94
- Worth recommendingunclear0.44
- Model replicano0.03
- Problem scopescore on a 0–2 scale0.08
- About Jevyes0.99
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.