What it is
jev-align is an experimental CLI from Sutro for building AI Functions with TypeSafe's Jev. It finds uncertain examples, asks you to label them, and uses GEPA to improve the function.
How it uses Jev
Jev evaluates dataset rows and measures uncertainty. It selects ambiguous rows plus a random audit sample for labeling. Accumulated labels and optional rationales are used to run GEPA, which proposes an improved definition.
Primitives:choicescore
Technique worth stealing
Use uncertainty sampling to select ambiguous rows for human labeling, then optimize with GEPA.
Try it
uv tool install jev-align; export TYPESAFE_API_KEY and OPENAI_API_KEY; run jeva
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-centricyes0.88
- Shows a System One patternyes0.70
- Handles uncertaintyyes0.79
- Measuredno0.06
- Runnableyes0.96
- Worth recommendingunclear0.48
- Model replicano0.05
- Problem scopescore on a 0–2 scale1.19
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.