What it is
Stanley is a command-line tool for checking and understanding code changes. You describe what you need in natural language; it routes the request to one bounded workflow that gathers evidence and asks Jev fixed-choice questions.
How it uses Jev
Jev routes a natural-language request across workflows using author-provided JSON routing metadata plus deterministic facts. For built-ins, Jev answers fixed-choice questions about small, size-limited pieces of the diff or evidence; Stanley's own code turns answers into flags using fixed thresholds.
Primitives:choice
Technique worth stealing
Deterministic code gathers bounded evidence and asks Jev small fixed-choice questions; code, not the model, makes decisions.
Try it
Build from source: git clone, npm ci, npm run build, then node dist/cli.js --help.
Evidence
Each line is one question put to Jev about the README. ≥ 0.60 reads as yes, ≤ 0.40 as no; in between Jev is not making a call.
- Jev-centricyes0.83
- Shows a System One patternyes0.87
- Handles uncertaintyyes0.77
- Measuredno0.04
- Runnableyes0.93
- Worth recommendingunclear0.47
- Model replicano0.06
- Problem scopescore on a 0–2 scale1.95
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.