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agent-browser

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Updated 10-16 03:15

About this skill

When to use this skill

Use this skill whenever the user wants to:

  • Automate browser interactions (click, fill, navigate, screenshot) via CLI
  • Scrape web content or extract data from pages
  • Build AI agent workflows that interact with websites
  • Use refs-based element selection for deterministic automation
  • Run browser automation in agent mode with JSON output
  • Manage authenticated sessions with custom headers or CDP

How to use this skill

This skill is organized to match the agent-browser official documentation structure (https://github.com/vercel-labs/agent-browser/blob/main/README.md). When working with agent-browser:

Quick-Start Example: Snapshot → Identify → Interact

# 1. Install
npm install -g @anthropic-ai/agent-browser
2. Open a page and take a snapshot to get element refs

agent-browser open "https://example.com" agent-browser snapshot

Output includes refs like @e1, @e2, @e3 for each element 3. Click an element by ref

agent-browser click @e3

4. Fill a form field

agent-browser fill @e5 "hello@example.com"

5. Agent mode (JSON output for programmatic use)

agent-browser snapshot --json


### Detailed Documentation

1. **Install agent-browser**:
   - Load `examples/getting-started/installation.md` for installation instructions

2. **Quick Start**:
   - Load `examples/quick-start/quick-start.md` for basic workflow examples

3. **Learn core commands**:
   - Load `examples/commands/basic-commands.md` for basic commands (open, click, fill, etc.)
   - Load `examples/commands/advanced-commands.md` for advanced commands (snapshot, eval, etc.)
   - Load `examples/commands/get-info/` for information retrieval commands
   - Load `examples/commands/check-state/` for state checking commands
   - Load `examples/commands/find-elements/` for semantic locator commands
   - Load `examples/commands/wait/` for wait commands
   - Load `examples/commands/mouse-control/` for mouse control commands
   - Load `examples/commands/browser-settings/` for browser configuration
   - Load `examples/commands/cookies-storage/` for cookies and storage management
   - Load `examples/commands/network/` for network interception
   - Load `examples/commands/tabs-windows/` for tab and window management
   - Load `examples/commands/frames/` for iframe handling
   - Load `examples/commands/dialogs/` for dialog handling
   - Load `examples/commands/debug/` for debugging commands
   - Load `examples/commands/navigation/` for navigation commands
   - Load `examples/commands/setup/` for setup commands

4. **Understand selectors**:
   - Load `examples/selectors/refs.md` for refs-based selection (@e1, @e2, etc.)
   - Load `examples/selectors/traditional-selectors.md` for CSS, XPath, and semantic locators

5. **Use agent mode**:
   - Load `examples/agent-mode/introduction.md` for agent mode overview
   - Load `examples/agent-mode/optimal-workflow.md` for optimal AI workflow
   - Load `examples/agent-mode/integration.md` for integrating with AI agents

6. **Advanced features**:
   - Load `examples/advanced/sessions.md` for session management
   - Load `examples/advanced/headed-mode.md` for debugging with visible browser
   - Load `examples/advanced/authenticated-sessions.md` for authentication via headers
   - Load `examples/advanced/custom-executable.md` for custom browser executable
   - Load `examples/advanced/cdp-mode.md` for Chrome DevTools Protocol integration
   - Load `examples/advanced/streaming.md` for browser viewport streaming
   - Load `examples/advanced/architecture.md` for architecture overview
   - Load `examples/advanced/platforms.md` for platform support
   - Load `examples/advanced/usage-with-agents.md` for AI agent integration patterns

7. **Configure options**:
   - Load `examples/options/global-options.md` for global CLI options
   - Load `examples/options/snapshot-options.md` for snapshot-specific options
   - Load `examples/options/session-options.md` for session management options

8. **Reference API documentation** when needed:
   - `api/commands.md` - Complete command reference
   - `api/selectors.md` - Selector reference
   - `api/options.md` - Options reference

9. **Use templates** for quick start:
   - `templates/basic-automation.md` - Basic automation workflow
   - `templates/ai-agent-workflow.md` - AI agent workflow template


### Doc mapping (one-to-one with official documentation)

- See examples and API files → https://github.com/vercel-labs/agent-browser

## Examples and Templates

This skill includes detailed examples organized to match the official documentation structure. All examples are in the `examples/` directory (see mapping above).

**To use examples:**
- Identify the topic from the user's request
- Load the appropriate example file from the mapping above
- Follow the instructions, syntax, and best practices in that file
- Adapt the code examples to your specific use case

**To use templates:**
- Reference templates in `templates/` directory for common scaffolding
- Adapt templates to your specific needs and coding style

## API Reference

- **Commands API**: `api/commands.md` - Complete command reference with syntax and examples
- **Selectors API**: `api/selectors.md` - Selector types and usage reference
- **Options API**: `api/options.md` - All options reference

## Best Practices

1. **Use Refs**: Prefer refs (@e1, @e2) over traditional selectors for deterministic automation
2. **Snapshot First**: Always snapshot before interacting with elements to get refs
3. **Agent Mode**: Use `--json` flag for machine-readable output in agent mode
4. **Session Management**: Use `--session` to maintain state across commands
5. **Interactive Snapshot**: Use `-i` flag for interactive snapshot selection
6. **Semantic Locators**: Use semantic locators (role/name) when refs are not available
7. **Error Handling**: Check command exit codes and error messages
8. **Wait for Navigation**: Commands automatically wait for navigation to complete
9. **Headed Mode**: Use `--headed` for debugging, headless for production
10. **CDP Integration**: Use `--cdp` for Chrome DevTools Protocol integration
11. **Streaming**: Use `AGENT_BROWSER_STREAM_PORT` for live browser preview
12. **Authenticated Sessions**: Use `--headers` for authentication without login flows
13. **Custom Executable**: Use `--executable-path` for serverless deployments or custom browsers
14. **Snapshot Options**: Combine `-i`, `-c`, `-d`, `-s` options to optimize snapshot output

## Resources

- **GitHub Repository**: https://github.com/vercel-labs/agent-browser
- **Official README**: https://github.com/vercel-labs/agent-browser/blob/main/README.md
- **Agent Mode Documentation**: https://agent-browser.dev/agent-mode
- **Issues**: https://github.com/vercel-labs/agent-browser/issues

## Keywords

agent-browser, CLI browser automation, AI agents, browser automation CLI, refs, snapshot, agent mode, semantic locators, browser automation tool, command-line browser, AI agent browser, deterministic selectors, accessibility tree, browser commands, web automation CLI, sessions, headed mode, authenticated sessions, CDP mode, streaming, Chrome DevTools Protocol, Playwright, browser automation for AI