Vercel Agent Browser

agent-browser

Browser automation CLI for AI agents. Fast native Rust CLI.

Installation

Global Installation (recommended)

Installs the native Rust binary:

npm install -g agent-browser
agent-browser install  # Download Chrome from Chrome for Testing (first time only)

Project Installation (local dependency)

For projects that want to pin the version in package.json:

npm install agent-browser
agent-browser install

Then use via package.json scripts or by invoking agent-browser directly.

Homebrew (macOS)

brew install agent-browser
agent-browser install  # Download Chrome from Chrome for Testing (first time only)

Cargo (Rust)

cargo install agent-browser
agent-browser install  # Download Chrome from Chrome for Testing (first time only)

From Source

git clone https://github.com/vercel-labs/agent-browser
cd agent-browser
pnpm install
pnpm build
pnpm build:native   # Requires Rust (https://rustup.rs)
pnpm link --global  # Makes agent-browser available globally
agent-browser install

Linux Dependencies

On Linux, install system dependencies:

agent-browser install --with-deps

Updating

Upgrade to the latest version:

agent-browser upgrade

Detects your installation method (npm, Homebrew, or Cargo) and runs the appropriate update command automatically.

Requirements

• Chrome - Run agent-browser install to download Chrome from Chrome for Testing (Google's official automation channel). Existing Chrome, Brave, Playwright, and Puppeteer installations are detected automatically. No Playwright or Node.js required for the daemon.
• Rust - Only needed when building from source (see From Source above).

Quick Start

agent-browser open example.com
agent-browser snapshot                    # Get accessibility tree with refs
agent-browser click @e2                   # Click by ref from snapshot
agent-browser fill @e3 "test@example.com" # Fill by ref
agent-browser get text @e1                # Get text by ref
agent-browser screenshot page.png
agent-browser close

Traditional Selectors (also supported)

agent-browser click "#submit"
agent-browser fill "#email" "test@example.com"
agent-browser find role button click --name "Submit"

Commands

Core Commands

agent-browser open <url>              # Navigate to URL (aliases: goto, navigate)
agent-browser click <sel>             # Click element (--new-tab to open in new tab)
agent-browser dblclick <sel>          # Double-click element
agent-browser focus <sel>             # Focus element
agent-browser type <sel> <text>       # Type into element
agent-browser fill <sel> <text>       # Clear and fill
agent-browser press <key>             # Press key (Enter, Tab, Control+a) (alias: key)
agent-browser keyboard type <text>    # Type with real keystrokes (no selector, current focus)
agent-browser keyboard inserttext <text>  # Insert text without key events (no selector)
agent-browser keydown <key>           # Hold key down
agent-browser keyup <key>             # Release key
agent-browser hover <sel>             # Hover element
agent-browser select <sel> <val>      # Select dropdown option
agent-browser check <sel>             # Check checkbox
agent-browser uncheck <sel>           # Uncheck checkbox
agent-browser scroll <dir> [px]       # Scroll (up/down/left/right, --selector <sel>)
agent-browser scrollintoview <sel>    # Scroll element into view (alias: scrollinto)
agent-browser drag <src> <tgt>        # Drag and drop
agent-browser upload <sel> <files>    # Upload files
agent-browser screenshot [path]       # Take screenshot (--full for full page, saves to a temporary directory if no path)
agent-browser screenshot --annotate   # Annotated screenshot with numbered element labels
agent-browser screenshot --screenshot-dir ./shots    # Save to custom directory
agent-browser screenshot --screenshot-format jpeg --screenshot-quality 80
agent-browser pdf <path>              # Save as PDF
agent-browser snapshot                # Accessibility tree with refs (best for AI)
agent-browser eval <js>               # Run JavaScript (-b for base64, --stdin for piped input)
agent-browser connect <port>          # Connect to browser via CDP
agent-browser stream enable [--port <port>]  # Start runtime WebSocket streaming
agent-browser stream status           # Show runtime streaming state and bound port
agent-browser stream disable          # Stop runtime WebSocket streaming
agent-browser close                   # Close browser (aliases: quit, exit)
agent-browser close --all             # Close all active sessions
agent-browser chat "<instruction>"    # AI chat: natural language browser control (single-shot)
agent-browser chat                    # AI chat: interactive REPL mode

Get Info

agent-browser get text <sel>          # Get text content