ghostchrome

ghostchrome

Ultra-light browser automation CLI for LLM agents. Single Go binary, zero Node.js, 7-25x fewer tokens than Playwright MCP.

ghostchrome preview http://localhost:3000

[200] Dashboard — http://localhost:3000 (134ms)
[errors] none
[network] 12 reqs, 0 failed
[dom]
  [h1] Dashboard
  [btn @1] Add User
  [table] 5 rows
  [link @2 href=/settings] Settings

Why

Playwright MCP burns 14,000-50,000 tokens per snapshot. ghostchrome returns the same information in 1,000-5,000 tokens using a filtered accessibility tree with compact refs.

Install

go install github.com/MakFly/ghostchrome@latest

Or download a prebuilt binary from Releases.

Requirements

• Chrome or Chromium installed on your system

Commands

Page inspection

# Full health report (status + errors + network + DOM)
ghostchrome preview <url> [--level skeleton|content|full]

# Navigate and get page info
ghostchrome navigate <url> [--wait load|stable|idle|none] [--extract skeleton|content|full]

# Extract DOM as compact accessibility tree
ghostchrome extract <url> [--level skeleton|content|full] [--selector "main"]

# Capture screenshot
ghostchrome screenshot <url> [--full] [--element @ref] [--output path]

# Evaluate JavaScript (supports async/await)
ghostchrome eval "<expression>" <url> [--on @ref]

# Collect console + network errors
ghostchrome errors <url>

Interaction (via refs)

Every interactive element gets a compact ref (@1, @2, etc.):

ghostchrome click @3 <url>              # Click a button/link
ghostchrome type @2 "hello" <url>       # Type into an input
ghostchrome select @5 "option" <url>    # Select dropdown option
ghostchrome hover @1 <url>             # Hover (menus, tooltips)
ghostchrome press Enter <url>          # Keyboard key
ghostchrome press Tab --on @2 <url>    # Key on specific element

Navigation

ghostchrome back                        # Browser history back
ghostchrome forward                     # Browser history forward
ghostchrome waitfor "selector" <url>   # Wait for element to appear

Browser management

ghostchrome tabs                        # List open tabs
ghostchrome tabs switch 2              # Switch to tab
ghostchrome tabs close 1               # Close tab
ghostchrome viewport 375 667           # Set viewport size
ghostchrome viewport --device iphone-14 <url>  # Device preset
ghostchrome dialog accept              # Handle JS alert/confirm
ghostchrome serve [--port 9222]        # Persistent Chrome session

Device presets

iphone-se, iphone-14, iphone-14-pro-max, ipad, ipad-pro, pixel-7, desktop-hd, desktop-2k

Extraction levels

Global flags

--connect ws://...   Connect to existing Chrome
--headless=false     Show browser window
--timeout 30         Operation timeout (seconds)
--format json        Output as JSON (default: text)
--stealth            Hide headless fingerprints
--dismiss-cookies    Auto-dismiss cookie banners

Session mode

For multi-step workflows, use a persistent Chrome:

# Terminal 1: start Chrome
ghostchrome serve --port 9222

# Terminal 2: interact
ghostchrome navigate --connect ws://... https://app.com/login
ghostchrome type @1 "user@test.com" --connect ws://...
ghostchrome type @2 "password" --connect ws://...
ghostchrome click @3 --connect ws://...
ghostchrome preview --connect ws://...

Use with LLM agents

ghostchrome is designed for AI coding agents (Claude Code, Cursor, etc.) to verify their work:

# After implementing a feature, the LLM runs:
ghostchrome preview http://localhost:3000/dashboard
# → sees status, errors, network, DOM in ~1,000 tokens
# → if errors: fixes them automatically

Built with

• Rod — Go Chrome DevTools Protocol driver
• Cobra — CLI framework
• Chrome DevTools Protocol — direct CDP, no intermediary

License

MIT