Steel Browser is an open-source, API-first browser infrastructure designed for AI agents and large language models (LLMs) to interact with the web autonomously. It provides a headless environment optimized for high-performance automation tasks and reliable data extraction.

• Manages persistent browser sessions and cookies via cloud-hosted or self-hosted infrastructure to maintain state across sequential requests.

• Implements advanced anti-fingerprinting techniques and automatic proxy rotation to bypass sophisticated bot detection systems and CAPTCHAs.

• Provides a unified API compatible with Playwright, Puppeteer, and Selenium, enabling programmatic DOM manipulation and multi-tab management.

• Executes JavaScript in isolated sandboxed environments to ensure data privacy and operational security during automated web navigation.

• Integrates with LangChain, LlamaIndex, and CrewAI through dedicated SDKs for Python and Node.js.

• Supports Docker-based deployment for horizontal scaling and orchestration within Kubernetes clusters.

Ideal for training LLMs on real-time web data, executing complex multi-step web workflows, and building autonomous research agents.