What it is
A Windows adaptation of Jev Ultrafast for Chrome and Edge, giving agents like Codex and Grok browser access through a local extension bridge and MCP. It controls existing signed-in tabs without Chrome remote debugging or profile copying.
How it uses Jev
Jev picks an operation (CLICK, TYPE_TEXT, SELECT, SCROLL_UP, SCROLL_DOWN, WAIT, DONE, BLOCKED) and a target element from an indexed element table built from the page. A small LLM writes text only for TYPE_TEXT. Operation and target heads share one TypeSafe request per decision cycle.
Primitives:choice
Technique worth stealing
One TypeSafe request per decision cycle: operation and target heads share the same observed state, with speculative target questions.
Try it
Run Install-Windows.cmd, set API key via Settings.cmd, load the extension folder, then uv run jev.
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-centricyes0.73
- Shows a System One patternno0.37
- Handles uncertaintyno0.04
- Measuredno0.05
- Runnableyes0.96
- Worth recommendingno0.28
- Model replicano0.20
- Problem scopescore on a 0–2 scale1.03
- About Jevyes0.98
Signals by Jev jev-1.13.0, card written by DeepSeek V4.1 Flash from the README on 20 Sept 2026.