Automated README summary
Automatically summarized from the README on 20 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.
What it is
A learning project that turns TypeSafe's launch claims about Jev into runnable experiments. Jev, Claude Opus 5.5, and keyword rules answer the same typed questions through one system_one(state, questions) call, and code measures latency, tokens, cost, calibration, and correctness.
How it uses Jev
Jev answers typed questions (Choice, Score, Noul) over a state such as a support ticket, SMS message, or Wikipedia link list. Its probabilities drive downstream code: spam thresholds, churn scores, and Wikiracing link choices, including two-stage scoring then an explicit choice above 255 links.
Primitives:choicescorenoul
Technique worth stealing
Run every model arm behind one typed interface so calibration, cost, and latency are measured by the same code.
Try it
uv sync, then uv run systemone demo; add --live with TYPESAFE_API_KEY for real Jev.
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 projectnot found in the excerpt0.24
- Shows a System One patternFound in material0.63
- Describes handling uncertaintynot found in the excerpt0.07
- Reports measured numbersnot found in the excerpt0.11
- Is a runnable toolnot found in the excerpt0.14
- Top-10 learning shortlist signalunclear0.53
- Is a replica of the modelnot found in the excerpt0.11
- Solves a common problem (0–2)score on a 0–2 scale0.27 / 2
- About JevFound in material0.98
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 20 Oct 2026.