What it is
A local FastAPI decision server plus a Playwright Chromium agent and operator console UI with 10 mainland-China-accessible site templates. For developers exploring browser automation without GPU or TypeSafe calls.
How it uses Jev
The demo/CLI agent snapshots interactive elements, ranks them, and asks System One for the next action; the default backend is a local keyword-overlap heuristic server exposing POST /v1/systemone. Tasks use deterministic selectors with the heuristic only as a light tie-break.
Technique worth stealing
Embed the headless browser as a Playwright JPEG stream over WebSocket instead of an iframe, avoiding X-Frame-Options/CSP blocking.
Try it
python -m venv .venv; pip install -e ".[dev]"; python -m playwright install chromium; run systemone and demo.
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-centricno0.08
- Shows a System One patternyes0.61
- Handles uncertaintyno0.06
- Measuredno0.05
- Runnableyes0.92
- Worth recommendingno0.11
- Model replicayes0.81
- Problem scopescore on a 0–2 scale0.20
- About Jevyes0.75
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.