What is MCP? A Quick Start Guide for Developers

What is MCP

MCP (Model Context Protocol) is an open protocol that securely connects large language models to external tools, data sources and local environments. Think of it as "the USB standard for AI agents".

Why MCP matters

Without a unified protocol, every tool needs its own plugin. MCP lets a server be implemented once and reused by many clients (Cursor, Claude and more), cutting integration costs.

How to choose an MCP server

Prefer servers maintained by vendors or officials, with clear permission scopes and complete documentation. Start from the MCP website and reference implementations, then filter by scenario (code repositories, browser, documents).

Keep exploring on GEXNO

Open the MCP category to jump straight to the specification, Awesome lists and popular server repositories.