agent-browser core

Fast browser automation CLI for AI agents. Chrome/Chromium via CDP, no Playwright or Puppeteer dependency. Accessibility-tree snapshots with compact @eN refs let agents interact with pages in ~200-400 tokens instead of parsing raw HTML.

Most normal web tasks (navigate, read, click, fill, extract, screenshot) are covered here. Load a specialized skill when the task falls outside browser web pages — see When to load another skill.

The core loop

agent-browser open <url>        # 1. Open a page
agent-browser snapshot -i       # 2. See what's on it (interactive elements only)
agent-browser click @e3         # 3. Act on refs from the snapshot
agent-browser snapshot -i       # 4. Re-snapshot after any page change

Refs (@e1, @e2, ...) are assigned fresh on every snapshot. They become stale the moment the page changes — after clicks that navigate, form submits, dynamic re-renders, dialog opens. Always re-snapshot before your next ref interaction.

Quickstart