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What is Agent Browser?

Agent Browser is a powerful headless browser automation tool designed specifically for AI agents. It provides a fast, reliable command-line interface for controlling browsers programmatically, with an architecture optimized for both performance and ease of use.

Fast & Efficient

Native Rust CLI with sub-millisecond parsing overhead for maximum performance.

AI-First Design

Built for AI agents with snapshot-ref workflow, JSON output, and optimal token usage.

Production Ready

Security features including authentication vault, domain allowlists, and action policies.

Cross-Platform

Works on macOS, Linux, and Windows with automatic fallback support.

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Key Features

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Snapshot-Ref Workflow

The optimal way to interact with web pages. Get a snapshot of interactive elements, then use refs to interact deterministically: 
agent-browser snapshot -i
# Output shows interactive elements with refs: @e1, @e2, @e3...

agent-browser click @e2
agent-browser fill @e3 "user@example.com"

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Fast Architecture

Agent Browser uses a client-daemon architecture:
  1. Rust CLI - Fast native binary for parsing and communication
  2. Node.js Daemon - Manages Playwright browser instance
  3. Automatic Fallback - Uses Node.js directly if native binary unavailable
The daemon starts automatically and persists between commands for fast subsequent operations.

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Security Built-In

Opt-in security features for safe AI agent deployments:
  • Authentication Vault - Store credentials encrypted, LLM never sees passwords
  • Domain Allowlist - Restrict navigation to trusted domains
  • Action Policies - Gate destructive actions with policy files
  • Content Boundaries - Wrap page output to help LLMs distinguish trusted from untrusted content

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Multiple Platforms

Run browsers anywhere:
  • Local - Chromium, Firefox, or WebKit via Playwright
  • iOS Simulator - Real Mobile Safari testing on macOS
  • Cloud Providers - Browserbase, Browser Use, Kernel
  • CDP Mode - Connect to existing browsers via Chrome DevTools Protocol

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Get Started

Installation

Install Agent Browser globally, locally, or from source.

Quickstart

Get to a working example in under 2 minutes.

Core Concepts

Learn the snapshot-ref workflow and other key concepts.

AI Agents

Integrate with Claude, GPT, and other AI coding assistants.

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Use Cases

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AI Agent Automation

Perfect for AI agents that need to interact with web applications:
  • E2E testing with natural language instructions
  • Web scraping with intelligent navigation
  • Form filling and data entry
  • Visual regression testing

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Development & Testing

Streamline your development workflow:
  • Automated testing of web applications
  • Screenshot comparison testing
  • Accessibility tree inspection
  • Network request monitoring

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Production Deployments

Deploy AI agents that interact with the web:
  • Serverless environments (Vercel, AWS Lambda)
  • CI/CD pipelines
  • Monitoring and alerting systems
  • Automated workflows
Open Source: Agent Browser is Apache-2.0 licensed. Contributions welcome at github.com/vercel-labs/agent-browser

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