Steel is an open-source browser infrastructure platform designed specifically for AI agents and automated workflows that need to interact with the web at scale. Steel provides managed browser instances with built-in handling for authentication, captchas, proxies, and anti-bot measures that typically block automated systems. With a simple API, developers can spin up hundreds of browser sessions for their AI agents without managing infrastructure. Steel supports Playwright, Puppeteer, and Selenium, making it easy to integrate with existing automation code.