What it is
An independent async Python client for TypeSafe Jev, the System One decision model. It lets Python developers ask typed questions about a state and receive probabilities and choices instead of prose.
How it uses Jev
Jev answers Noul, Choice and Score questions about one shared state string. The client sends all questions in a single call, evaluated in isolation and answered in parallel, then returns typed answers: noul probability, choice with probabilities and confidence, score with legend and confidence.
Primitives:choicescorenoul
Technique worth stealing
Batch every question into one call against the same state; batching is nearly free in latency but question text is billed as input tokens.
Try it
pip install jevclient, then run the README example with your API key.
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 patternunclear0.52
- Handles uncertaintyno0.04
- Measuredno0.04
- Runnableyes0.93
- Worth recommendingunclear0.54
- Model replicano0.03
- Problem scopescore on a 0–2 scale1.02
- About Jevyes0.99
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.