Automated README summary
Automatically summarized from the README on 17 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.
What it is
A TypeScript app where Jev, TypeSafe AI's System One model, plays chess against itself, saves games, replays them with per-move probabilities, and grades every move with Stockfish.
How it uses Jev
For each position, Jev receives state (rules primer, FEN, ASCII board, move history) and one `choice` question whose options are all legal moves. The returned probability for every legal move is used to pick a move, and those probabilities are shown in the replay UI.
Primitives:choice
Technique worth stealing
Frame a move as a `choice` over all legal moves to get a calibrated probability for each, instead of a single text answer.
Try it
npm install, set AI_GATEWAY_API_KEY in .env.local, then npm run dev.
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 patternunclear0.50
- Describes handling uncertaintynot found in the excerpt0.04
- Reports measured numbersnot found in the excerpt0.07
- Is a runnable toolnot found in the excerpt0.12
- Top-10 learning shortlist signalFound in material0.61
- Is a replica of the modelnot found in the excerpt0.04
- Solves a common problem (0–2)score on a 0–2 scale0.00 / 2
- About JevFound in material0.99
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 17 Oct 2026.