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jev-playground

xingqiux/jev-playground

Unofficial local playground for Jev System One decision model.

Evaluation & Benchmarking0.93Runner-up: Classification & RoutingQuestionnaire
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

A browser-based tool for entering text, JSON, or images and typed questions, then sending one request to Jev to get probabilistic verdicts. For developers testing Jev's decision capabilities.

How it uses Jev

Jev answers typed questions: noul (binary probability), choice (multi-class probabilities), score (ordered rating), and box (object localization). The state is the input content, and the results are displayed as probabilities, confidence, and bounding boxes.

Primitives:noulchoicescore

Technique worth stealing

Order sensitivity test: reverse choice categories to see probability shifts.

Try it

Run `python3 server.py` after setting TYPESAFE_API_KEY, then open http://127.0.0.1:5199.

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 projectFound in material0.96
  • Shows a System One patternFound in material0.64
  • Describes handling uncertaintynot found in the excerpt0.04
  • Reports measured numbersnot found in the excerpt0.04
  • Is a runnable toolFound in material0.96
  • Top-10 learning shortlist signalunclear0.48
  • Is a replica of the modelnot found in the excerpt0.03
  • Solves a common problem (0–2)score on a 0–2 scale0.83 / 2
  • About JevFound in material0.99
Signals
Jev is core to the project0.96Shows a System One pattern0.64Describes handling uncertainty0.04Reports measured numbers0.04Is a runnable tool0.96Top-10 learning shortlist signal0.48Is a replica of the model0.0300.51Solves a common problem (0–2)0.83 / 2012

no-judgment band (0.40–0.60)

Design patterns
Questionnaire0.9900.51

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.