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Explore how to build browser-powered MCP (Model Context Protocol) tools that go beyond simple information retrieval to perform real-world tasks like booking tennis courts, filling out forms, and navigating user interfaces. Learn to create an MCP server on Cloudflare Workers using browser rendering capabilities to handle complex interactions including login processes, CAPTCHA solving, two-factor authentication, and automated booking systems. Discover the essential anatomy of effective tools, understand critical lessons learned including tool poisoning prevention, and distinguish between robust "real tools" and fragile scripts. Gain insights into designing safe, composable, and practical tools that can operate reliably in production environments, moving beyond traditional API-based approaches to create AI tools that can actually perform meaningful actions in web browsers.
