jev-ultrafast

jev-ultrafast is published by Browser Use (GitHub: browser-use), and the README also credits Jev from TypeSafe. You give it a goal, and it picks the next action in Chrome: click, type, choose from a dropdown or scroll. The README calls it "a browser agent with a dynamic, indexed action space." A TypeSafe model decides each step and receives the visible controls and text on the page; smaller text tasks go to a separate text model, routed through OpenRouter by default. A local inspector shows what the agent did at each step. The README demo only searches for flights; it does not pick a flight or book anything.

Who it's for:Developers who want to study how a browser agent makes decisions. It is of no use if you don't write code.

Before you start: Install the dependencies with uv, set up a TypeSafe key and a text-model API, then start the local inspector on port 8766. Browser Harness connects to your Chrome and needs remote debugging turned on. It runs on your existing Chrome profile, so it can reach any account already signed in there. We don't recommend running it on the everyday Chrome profile where you're logged in to everything: one wrong click becomes a real action on a real account. The project says file uploads, pop-ups, iframes, shadow DOM and canvas aren't supported yet. Runs and recordings make paid API calls, and the cloud service is still on a waitlist. Licensed under MIT.

Based on the project's public documentation. Not tested by AI Inspiration World.