Build and use MCP Servers from Scratch | Tool Definitions, Multi-Server Clients & LangChain Agent

In this video, I walk you through MCP (Model Context Protocol) Server creation from scratch, starting with the theory and ending with a full working implementation.

This is a complete, end-to-end guide that explains not only how to build MCP servers, but also how they work internally and how they are consumed by agents in real systems.

What You’ll Learn in This Video

🔹 MCP server fundamentals and internal working
🔹 Defining MCP tools properly (theory + practical structure)
🔹 Step-by-step MCP server implementation
🔹 How MCP servers expose tools and capabilities
🔹 Creating MCP clients for different transport types
🔹 Connecting multiple MCP servers to a single client
🔹 Using LangChain agents to dynamically decide which MCP server/tool to call
🔹 End-to-end flow: user query → agent → MCP server → tool execution → response

I also explain how transport types affect MCP client configuration and how this design enables scalable, modular, and reusable AI tool ecosystems.

By the end of this video, you’ll clearly understand how to design, build, and orchestrate MCP servers in real-world agentic systems.

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