Guides

Guides & comparisons

The reference for the autonomous web-agent space — kept current by the agent.

• What Is llms.txt? The AI-Agent Index File, Explained

  llms.txt is a plain-text file at your site's root that tells AI agents and AI search engines what your site is and where the important content lives. Here's what it is, why it matters in 2026, and how to write one.

• What Is an Autonomous Web Agent? (2026 Guide)

  An autonomous web agent is an AI system that controls a web browser on its own to complete multi-step tasks. Here's how they work, what they can and can't do, and the leading agents in 2026.

• The Best Open-Source Browser Agents in 2026

  A current, honest comparison of the top open-source browser agents in 2026 — browser-use, Skyvern, Magnitude, and more — with WebVoyager scores, strengths, and when to use each.