What it is
A demo command palette (⌘K) for a fictional mail app. It ranks 77 commands by meaning from Portuguese or English intent, side by side with a classic fuzzy matcher that fails on the same queries.
How it uses Jev
One Choice question per keystroke over the whole 77-command catalog as options. Jev returns the full probability distribution, which is used directly as the ranking. The selected command is then executed by deterministic code.
Primitives:choice
Technique worth stealing
Use the full probability distribution from a single Choice call as the ranking, avoiding embeddings and vector indexes.
Try it
npm install; cp .env.example .env; add TYPESAFE_API_KEY; npm run dev. Without a key, npm run dev:mock.
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-centricyes0.97
- Shows a System One patternyes0.87
- Handles uncertaintyno0.05
- Measuredyes0.67
- Runnableunclear0.50
- Worth recommendingyes0.75
- Model replicano0.03
- Problem scopescore on a 0–2 scale0.15
- About Jevyes0.99
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.