Model Context Protocol (MCP), developed by Anthropic and recently made available as open source, is a protocol that standardizes how artificial intelligence models (LLM) communicate with the outside world. As of 2026 ,it has become the fundamental building block that enables AI agents to act like “internet browsers.”
While in the past, a separate integration (API connection) had to be written for each artificial intelligence model, thanks to MCP, all models (Claude, ChatGPT, Gemini, etc.) can access your data with a single standard. This protocol creates the same universality in the artificial intelligence software world that the USB-C cable creates in the hardware world.
Simple Analogy
You can think of MCP as a “universal plug” that gives your AI assistant access to files on your computer, the company database, or Slack messages. When you plug it in, the model can read data, analyze it and take action.
MCP works on client-server architecture. This structure prioritizes security and ensures that the model accesses only permitted data. It has revolutionized especially RAG (Retrieval-Augmented Generation) systems.