Stop Manual Booking: Build a Claude 3.5 Doctor Appointment Assistant with MCP and Node.js

We’ve all been there: staring at a hospital's clunky registration portal at 7:59 AM, refreshing like a maniac, only to find that the specialist you need is fully booked. What if your AI could handle that for you? With the release of Anthropic’s Model Context Protocol (MCP) , the game has changed. We are moving away from hacky, one-off tool-calling implementations toward a standardized AI Agent architecture that allows models like Claude 3.5 Sonnet to seamlessly interact with local and remote resources. In this tutorial, we’re building a "Medical Appointment Agent" that doesn't just chat—it acts. By leveraging Anthropic MCP , Node.js , and Playwright , we’ll create a system where Claude can check your calendar, find available slots on a medical portal, and resolve scheduling conflicts automatically. Why MCP? The Missing Link in AI Automation Before MCP, connecting an LLM to a specific database or a web scraper required building custom API wrappers every single time. Anthropic MCP provid