Simon Willison • 1/27/2026

One Human + One Agent = One Browser From Scratch

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In response to the hype around multi-agent browser projects, a developer successfully built a basic web browser using a single AI coding agent (Codex CLI) over three days. The project, 'one-agent-one-browser', produced 20,000 lines of dependency-free Rust code that renders HTML and CSS, demonstrating the potential of focused AI-assisted development to create complex software with minimal human oversight.

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#rust #Web Browser #AI Coding Agents
One Human + One Agent = One Browser From Scratch

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