What it is
A Pi coding-agent extension that runs four pre-flight hazard checks before bash, write and edit, and four diff-quality checks after write and edit, generating fixed advisory feedback for the agent.
How it uses Jev
Each phase sends one TypeSafe System One request. Pre-flight check use Choice with "true"/"false" labels on tool input and repo context; the critic uses Score on the resulting diff. Returned typed values are compared against configured confidence and minScore thresholds, then fixed feedback is appended to results.
Primitives:choicescore
Technique worth stealing
Share one System One request per phase across four checks, apply per-check confidence thresholds, and keep the extension advisory by default so failures never block tools.
Try it
npm ci && npm run check; then pi -e ./src/extension.ts with TYPESAFE_API_KEY set.
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 patternunclear0.54
- Handles uncertaintyyes0.76
- Measuredno0.04
- Runnableyes0.96
- Worth recommendingno0.38
- Model replicano0.03
- Problem scopescore on a 0–2 scale1.34
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.