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Learn/L13 · Model Context Protocol (MCP)

Building a simple MCP server (conceptually)

Declare tools (name, schema, handler), expose over stdio.

Difficulty 2/5
Short

Plain English

Declare tools (name, schema, handler), expose over stdio. Picture it like this: Wiring a USB device's buttons to functions. In the apps you ship (Agentify, wedding portals, CRM), you will bump into this on almost every screen — name it clearly when you prompt your coding agent.

Analogy

Wiring a USB device's buttons to functions.

Go deeper

Declare tools (name, schema, handler), expose over stdio.

Common mistakes

  • Letting the AI rename this concept three different ways in one PR.
  • Building UI before you can say what is stored and who can change it.

AI-agent trap

Agents may invent jargon here. Ask them to explain the concept in plain English first, then map it to your schema and one real screen.

Summary

Declare tools (name, schema, handler), expose over stdio. Wiring a USB device's buttons to functions. Ask yourself: where does this live in the database, which function changes it, and which screen shows it?

Confidence: