Show HN: Webact – token-efficient browser control for AI agents (GitHub)

I built webact while experimenting with browser control for LLM agents and kept running into the same problem: token usage.

Most tools wrap Playwright and return huge accessibility trees or DOM dumps, which gets expensive quickly. webact takes a simpler approach — it talks directly to Chrome via the DevTools Protocol and returns a small "page brief" instead.

It’s just a single JS file (~196KB), zero dependencies, and it uses your existing Chrome session.

Happy to hear thoughts.