Automated README summary
Automatically summarized from the README on 7 Oct 2026; not a run by jevbooks. Run instructions and author-reported outcomes still need verification.
What it is
A browser chess game for anyone who wants to play against Jev, TypeSafe AI's System One model. Chess rules are implemented from scratch in TypeScript with React 19, Vite and Tailwind CSS — no engine dependency.
How it uses Jev
Each turn, a workflow of choice questions is asked: a pre-move focus step, a fixed piece step, a fixed destination step, and post-move reflection. Options are the actual legal moves, so illegal moves are unrepresentable. Each step is one POST /v1/systemone call with the position as state; the chosen key becomes the move.
Primitives:choice
Technique worth stealing
Constrain the answer space to the legal move list so an illegal move is unrepresentable, not just discouraged.
Try it
npm install, add JEV_API_KEY to .env, then npm run dev and play as white.
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 material0.83
- Describes handling uncertaintynot found in the excerpt0.05
- Reports measured numbersnot found in the excerpt0.05
- Is a runnable toolFound in material0.75
- Top-10 learning shortlist signalunclear0.60
- Is a replica of the modelnot found in the excerpt0.07
- Solves a common problem (0–2)score on a 0–2 scale0.01 / 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 7 Oct 2026.