Browsy

An autonomous browser agent that drives a real Chrome, with a chat panel living inside the page.

Browsy is a browser agent that launches Chrome with its own profile, attaches over the DevTools Protocol, and injects a chat panel and a virtual mouse cursor into every page it visits. You watch it work in a real, visible browser, on real sites, logged into your own accounts if you want it to be — it is not a scraper and not a headless harness.

View on GitHub

How it works

A frame from the demo run: researching five open-weight models, reading YouTube comments for sentiment, and building a comparison page, start to finish, in 9 minutes for $3.10.

The model picks how to perceive a page, per step: accessibility refs by default (cheap, precise, survives redesigns), run_js when extraction beats clicking, and screenshot for canvas apps and other genuinely visual surfaces where there’s nothing to read.

Guardrails live in code rather than in the prompt — a domain allowlist, a confirmation gate on irreversible clicks, and a file fence around a single directory — so a model talked round by text on a page still can’t get past them.

Tech

Python 3.12+, the Chrome DevTools Protocol, and the OpenAI API. Tested with 96 panel checks against rendered geometry in real Chrome instances, plus 30 file-access checks for the file fence.

I write more about the design decisions behind it on the blog: Building Browsy.