Automated README summary
Automatically summarized from the README on 27 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.
What it is
DecisionArena is a Python standard-library harness that measures decision models (TypeSafe Jev, Cloudflare Clef, local Laya) on the same battery: accuracy, calibration, cost, latency, determinism, injection resistance, and swap safety. It also ships a beginner course and an Astro website.
How it uses Jev
Jev is one of the measured providers. The harness runs batteries (routing, injection, format) against it, records raw answers, latency, tokens and cost, and compares Jev against other providers via the swap command (label agreement, probability gap, action-change rate). The README does not describe Jev's internal primitives or how its probabilities are consumed beyond these metrics.
Technique worth stealing
Measure competing decision models on identical batteries and commit the raw calls as evidence.
Try it
python -m decisionarena run --provider jev --battery routing (after setting TYPESAFE_API_KEY)
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-1.14.0- Project signals
jev-1.14.0- Category
jev-1.14.0- Pattern tags
jev-1.14.0
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 projectnot found in the excerpt0.05
- Shows a System One patternnot found in the excerpt0.16
- Describes handling uncertaintynot found in the excerpt0.05
- Reports measured numbersnot found in the excerpt0.02
- Is a runnable toolnot found in the excerpt0.23
- Top-10 learning shortlist signalnot found in the excerpt0.10
- Is a replica of the modelnot found in the excerpt0.05
- Solves a common problem (0–2)score on a 0–2 scale1.64 / 2
- About JevFound in material0.97
no-judgment band (0.40–0.60)
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 27 Oct 2026.