Lesson 3 · 8 min
MCP Overview
What the Model Context Protocol is and when to use it.
MCP is a JSON-RPC protocol for exposing tools, prompts, and resources to LLM clients. Build an MCP server when you want the same toolset reusable across Claude Code, the desktop app, and your own agents.
Quick check
Tool Design & MCPSelect one
Should you expose a slow-changing reference dataset as an MCP resource or as a tool?