What it is
A small JavaScript library for import flows: it maps an uploaded CSV's columns onto a destination table, showing probabilities and leaving unmapped fields visible for a human.
How it uses Jev
After a strict name-equality pass, Jev answers one Noul per remaining source/destination pair plus a guard Noul per incoming column. The probabilities drive a greedy one-to-one resolution above a 0.75 threshold; unmapped fields stay visible.
Primitives:noul
Technique worth stealing
Use a matrix of independent boolean questions instead of multiple choice, so a column can map to nothing and ties stay visible.
Try it
git clone, npm install, cp .env.example .env, add OpenRouter key, npm run demo, open http://localhost:5211
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-centricyes0.92
- Shows a System One patternyes0.94
- Handles uncertaintyyes0.90
- Measuredyes0.97
- Runnableyes0.86
- Worth recommendingunclear0.54
- Model replicano0.10
- Problem scopescore on a 0–2 scale1.84
- About Jevyes0.96
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 22 Sept 2026.