What it is
jevr is an R client for JEV / TypeSafe System One. It sends a state and typed questions to a model and returns structured answers for use in R, supporting multiple questions, probabilities, confidence, usage, and provider metadata.
How it uses Jev
jevr sends a state and typed questions (Choice, Score, Noul) to Jev via jev_ask() or jev_map(). Jev returns structured answers with probabilities and confidence. Results are accessed via result$answers, and jev_map() handles multiple states with bounded concurrency.
Primitives:choicescorenoul
Technique worth stealing
Use jev_spec() to version question definitions and jev_execution_id() for reproducible execution identities.
Try it
install.packages("pak"); pak::pak("simxnherrera/jevr")
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-centricunclear0.58
- Shows a System One patternno0.37
- Handles uncertaintyno0.05
- Measuredno0.05
- Runnableyes0.97
- Worth recommendingunclear0.43
- Model replicano0.04
- Problem scopescore on a 0–2 scale1.00
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.