Lives in the browser
A Chrome side panel plus a small native helper. Acts on the tabs you already have open.
Browy
The AI agent that lives in your browser. Drive real tabs through chat. Side panel for day-to-day work, DevTools REPL for the power users.
What Browy is
Section titled “What Browy is”Browy is a Chrome side-panel agent. You chat with it; it reads the active tab, clicks through pages, fills forms, runs JavaScript, captures screenshots, and remembers things across sessions.
It ships in two parts: the browser extension (on the Chrome Web Store) and a small native messaging host you install with one command. The install guide covers both.
Why Browy
Section titled “Why Browy”Pick your model
Switch between frontier models (Claude, GPT, Gemini, Llama) on
the fly with /model or in Settings.
Reads the accessibility tree
The agent acts on indexed accessibility nodes, not CSS selectors, so it doesn’t break when class names change. JavaScript evaluation is available when the snapshot isn’t enough.
Open source
Apache 2.0. Read the agent loop, fork it, build it yourself. Browser tools can be turned off individually in Settings. Host shell and filesystem are off by default; enable them one at a time.
What you can do
Section titled “What you can do” "Summarize this page in 5 bullets" Reads the article and writes the summary into the chat.
"Fill out this form for me" Fills every field in one prompt. Stops before submit.
"Find the cheapest flight" Navigates a flight-search site, parses the results, reports back.
What's the slowest API call? Reads the network log straight from chat. No DevTools panel required.
Get started
Section titled “Get started” Install Extension plus native host. About 2 minutes.
Your first chat Five example prompts to try in the side panel.
Permissions What each Chrome permission is for.
Privacy & data What stays on your machine and what leaves.
Status Early access
Section titled “Status ”The native host installer ships from GitHub Releases. The extension is published on the Chrome Web Store; the same listing is reused by Edge and Brave.
Writing
Section titled “Writing” Every $20 AI subscription costs $100 to serve Anthropic burns $8 of compute per $1 of subscription revenue. Microsoft loses $20+ on every Copilot seat. Agents broke the unit economics, and the bill is coming.
Mullvad gave you 8 trillion exit IPs. 9 servers found you. A researcher tested 3,650 WireGuard keys across 9 Mullvad servers. The 8.2T possible exit-IP combinations collapsed to 284.
All posts Notes on AI agents, browser automation, and open-source infra.