# core

> Claude/Codex skill by [@vercel-labs](https://omgskills.com/library/vercel-labs/index.md) · 40k stars · Updated 2026-08-02

Core agent-browser usage guide. Read this before running any agent-browser commands. Covers the snapshot-and-ref workflow, navigating pages, interacting with elements (click, fill, type, select), extracting text and data, taking screenshots, managing tabs, handling forms and auth, waiting for content, running multiple browser sessions in parallel, and troubleshooting common failures. Use when the user asks to interact with a website, fill a form, click something, extract data, take a screenshot, log into a site, test a web app, or automate any browser task.

## Install

```sh
git clone https://github.com/vercel-labs/agent-browser /tmp/agent-browser && ln -s /tmp/agent-browser/skill-data/core ~/.claude/skills/core
```

## From README

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 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 The browser stays running across commands so these feel like a single session. By default, an inactive daemon saves configured restore state, closes its headless browser, and exits after one hour; the next command starts it again.

## Links

- HTML page: https://omgskills.com/skills/vercel-labs/agent-browser/core/
- GitHub: https://github.com/vercel-labs/agent-browser
- Author: [@vercel-labs](https://omgskills.com/library/vercel-labs/index.md)

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