What it is
A cookbook of 15 practical, tested recipes for TypeSafe's Jev decision model. Each recipe includes a runnable script, a small labelled dataset, and measured results for tasks like support triage, file organizing, and Gmail labeling.
How it uses Jev
Jev answers typed questions (Choice, Noul, Score) on a prepared state. Recipes use Jev to make decisions like routing tickets, tagging articles, or detecting duplicates. Results are used in code with confidence-based routing to human review.
Primitives:choicescorenoul
Technique worth stealing
Route on confidence: act when Jev is sure, send middle band to a person.
Try it
npm run quickstart, then npm run 01 for any recipe by number.
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-centricyes0.96
- Shows a System One patternyes0.88
- Handles uncertaintyyes0.71
- Measuredno0.24
- Runnableunclear0.40
- Worth recommendingyes0.81
- Model replicano0.03
- Problem scopescore on a 0–2 scale1.75
- About Jevyes0.99
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.