What it is
OpenDecision is a local semantic decision engine for developers. It accepts application state or documents and typed questions, returning structured answers without generating text. It provides a Python API, FastAPI server, and TypeSafe SDK compatible endpoint.
How it uses Jev
OpenDecision uses the same core pattern as Jev: state plus typed questions in, structured answers out. It answers Choice, Noul, and Score questions from structured state or documents. Results are used directly in code, e.g., result["choice"] returns the selected option.
Primitives:choicenoulscore
Technique worth stealing
Local zeroshot classification with ModernBERT-large-zeroshot-v2.0 for calibrated probabilities.
Try it
pip install OpenDecision; run engine.choice() or opendecision serve.
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-centricyes0.91
- Shows a System One patternno0.38
- Handles uncertaintyno0.04
- Measuredno0.05
- Runnableyes0.83
- Worth recommendingno0.27
- Model replicayes0.90
- Problem scopescore on a 0–2 scale1.32
- About Jevyes0.93
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 21 Sept 2026.