Model Context Protocol

It’s a protocol (standard way) that allows:

• AI models (like ChatGPT)
• External tools
• Apps
• Databases
• APIs

to communicate in a structured way.

User
  ↓
App (Frontend / Backend)
  ↓
MCP Layer
  ↓
LLM
  ↕
Tools (DB, APIs, Search, Files, ...)

Why MCP exists

Large Language Models:

• Don’t know how to call tools
• Don’t persist memory naturally
• Need structured input/output format

MCP standardizes:

• Tool calling
• Memory handling
• Context injection