jevbooks

← All projects

jev

vilinski/jev · Homepage

CLI for System One decision models: typed questions in, calibrated probabilities out.

Agent Decisions0.38Runner-up: Infra / SDKs / IntegrationsQuestionnaire
Automated README summary

Automatically summarized from the README on 15 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.

What it is

jev is a Rust CLI that sends a piece of state plus typed questions to System One decision models and prints typed answers as JSON. It targets developers who need calibrated probabilities for branching code instead of generated text.

How it uses Jev

jev sends state and typed questions (noul, choice, score) to a selected provider and model, then prints the answers as JSON. Ordinary code can branch on the returned probabilities. The CLI hides provider differences and keeps the API key out of the caller.

Primitives:choicescorenoul

Technique worth stealing

Use calibrated probabilities from typed questions instead of brittle parsing or hand-written rules.

Try it

jev -p clef -m clef-omni noul 'Is this urgent?' -s 'Production is down'

View on GitHub

Start using Jev: API key and your first request →

Model judgments from README excerpts

Project signals use repository metadata, an existing summary and the first 700 README characters, not the full project. “Not found” means not detected in that material; it does not establish absence. These are the original judgments with recorded models and dates, not source audits or run results.

Models & evaluation dates

Inclusion gate
jev-1.13.0
Project signals
jev-1.13.0
Category
jev-1.13.0
Pattern tags
jev-1.13.0

Evidence

These signals use repository metadata, an existing summary and at most 700 cleaned README characters. ≥ 0.60 means reported in that excerpt; ≤ 0.40 means not found there. The middle band is inconclusive. None is a source-code audit or a test result. The runnable-tool question excludes research experiments; the recommendation question asks for a learning shortlist, not a quality verdict.

  • Jev is core to the projectunclear0.40
  • Shows a System One patternunclear0.53
  • Describes handling uncertaintynot found in the excerpt0.06
  • Reports measured numbersnot found in the excerpt0.06
  • Is a runnable toolFound in material0.97
  • Top-10 learning shortlist signalunclear0.40
  • Is a replica of the modelnot found in the excerpt0.05
  • Solves a common problem (0–2)score on a 0–2 scale1.03 / 2
  • About JevFound in material0.98
Signals
Jev is core to the project0.40Shows a System One pattern0.53Describes handling uncertainty0.06Reports measured numbers0.06Is a runnable tool0.97Top-10 learning shortlist signal0.40Is a replica of the model0.0500.51Solves a common problem (0–2)1.03 / 2012

no-judgment band (0.40–0.60)

Design patterns
Questionnaire0.9700.51

no-judgment band (0.40–0.60)

The Jev model and date for each judgment stage are listed above. Card written by DeepSeek V4.1 Flash from the README on 15 Oct 2026.