Build Your First MCP Server in TypeScript: The Integration Layer Every AI App Needs in 2026

If you've spent any time in the AI development space this year, you've probably heard of the Model Context Protocol (MCP). Anthropic open-sourced it in late 2024. By mid-2025, OpenAI deprecated its proprietary Assistants API in favor of it. Google's ADK, LangGraph, CrewAI, and Microsoft's Agent Framework all support it. GitHub's Octoverse report shows over 693,000 new LLM SDK repositories in the last 12 months alone.

MCP isn't a trend anymore. It's infrastructure.

But most articles about MCP stop at "it's like a USB-C port for AI" and never show you how to actually build one. That ends here.…