Show HN: Rotunda - A browser built for agents with simulated typing
Not a pilot. Rotunda is a Firefox fork purpose-built for AI agents to control browsers without detection.
Why it matters
As AI agents become the primary interface for automation, tooling that lets them interact with web UIs realistically—without leaking signals they're programmatic—removes a critical friction point. This is infrastructure for the next wave of agentic workflows.
The key facts
6 to knowFirefox fork with realistic mouse movement and keyboard simulation powered by trained RNN
Addresses cost problem of computer-use models by leveraging structured web formats instead of vision
Patches modern Firefox (v150) with agentic harness; accessible via CLI or Playwright API
Integrates with Claude, Codex, and other LLM inference harnesses
Open-source (MPL-2.0); early-stage project posted to Hacker News with 12 points
Solves detection problem: avoids CDP leaks and mimics human-like interaction patterns
Go to the source
Hacker Newsgithub.com
Publisher excerpt: Hi HN! Pierce here. Rotunda is a firefox fork primarily intended for agent use, which I’ve been hacking on nights/weekends. There was a [lengthy](https://news.ycombinator.com/item?id=48024859) discussion last week on how expensive computer use models are. The cost is going to drop eventually, but I…