Open-source headless browser API for AI agents — managed Chromium sessions with stealth, captchas handling, file downloads, and per-session isolation.
Open-source headless browser API for AI agents — managed Chromium sessions with stealth, captchas handling, file downloads, and per-session isolation.
Steel (steel.dev) is an open-source headless browser API designed specifically for AI agents that need to interact with the web. Instead of running Playwright or Puppeteer yourself, you call Steel's API to spin up an isolated Chromium session in the cloud (or self-host), drive it through standard Playwright/Puppeteer protocols, and tear it down when finished. Steel handles the operational pain that breaks DIY browser automation: stealth fingerprinting to avoid bot detection, proxy rotation, captcha handling, session reuse across multiple steps, persistent cookies, and structured screenshots/HTML extraction. For agent builders, Steel is the bridge between an LLM's plan and actually clicking buttons, filling forms, or scraping a logged-in site. The project is open source (GitHub: steel-dev/steel-browser) so teams concerned about sending traffic through a SaaS can self-host, while Steel Cloud is the managed offering with autoscaling and observability. The site lists pricing tiers though specific dollar amounts were not captured in plain text from the marketing pages and need verification. Steel is one of the most popular browser-automation primitives for agents, alongside Browserbase and Browser-use.
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Steel provides purpose-built cloud browser infrastructure for AI agents, solving the hard problems of session management, authentication persistence, and anti-bot detection that plague DIY browser automation. As an open-source solution, it offers transparency and self-hosting capabilities that commercial alternatives lack, making it ideal for organizations with specific compliance or cost requirements.
Complete source code access and self-hosting capabilities with Docker-based deployment for full control over browser automation infrastructure
Use Case:
Perfect for organizations requiring complete transparency, custom modifications, or specific compliance requirements for web scraping operations
Advanced browser fingerprinting and behavior simulation that makes automated requests indistinguishable from human browser usage patterns
Use Case:
Essential for scraping modern websites with sophisticated bot detection systems like Cloudflare, DataDome, or custom protection mechanisms
Maintains browser state, cookies, and authentication tokens across multiple requests enabling complex multi-step workflows and authenticated scraping
Use Case:
Critical for applications requiring login flows, e-commerce cart interactions, or any stateful web application automation
Full Chrome browser engine with dynamic content rendering, infinite scroll handling, and interactive element manipulation capabilities
Use Case:
Ideal for modern SPAs, React/Vue applications, and any website that loads content dynamically through JavaScript rather than server-side rendering
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