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Jev Ultrafast: AI Browser Agent in 7 Seconds

Browser agent that takes a plain-language goal and completes web tasks by navigating interfaces on its own — no site-specific scripts needed.

Jev Ultrafast is a browser agent with a dynamic, indexed action space: each page visit produces a fresh element table showing which buttons, fields, and dropdowns are currently visible, and the agent picks its next move only from that list. TypeSafe's Jev model handles navigation while a small separate LLM generates only typed text — all in one network round trip instead of several sequential calls. The browser-use team's demo: a Zürich-to-London flight search on Google Flights completed in 7.1 seconds including loading and waiting. The agent supports eight operations (CLICK, TYPE_TEXT, SELECT, SCROLL, WAIT, DONE, BLOCKED) and selects the right one autonomously. A web inspector shows per-operation and per-element probabilities; a 'Choose next' mode pauses before each action for manual review.

Why a vibe-coder should care

Instead of coding site-specific automation scripts, you write a goal in plain language. The no-fixed-scripts design works across different sites. Requires paid TypeSafe and OpenRouter API keys — worth estimating cost before regular use.

How to install

Copy this and send it to your agent — Claude Code, Codex, any of them:

Set up this browser agent: https://github.com/browser-use/jev-ultrafast — follow the README, add TYPESAFE_API_KEY and TEXT_MODEL_API_KEY to .env (ask me for keys if needed), run it and open http://127.0.0.1:8766, then run the flights demo.

Runs on any laptop — only Python needed; no GPU required, but paid TypeSafe and OpenRouter API keys are necessary.

Open on GitHub