# The Model Context Protocol Explained

The Problem MCP Solves

Before MCP, connecting AI to external tools was a mess. Every AI platform had its own way of calling APIs, reading files, and accessing databases. If you wanted your tool to work with Claude, ChatGPT, and Gemini, you built three different integrations. If you had 10 tools and 5 AI platforms, that was 50 custom connectors — the "N times M" problem.

MCP solves this by defining a single, open protocol. Build one MCP server for your tool, and it works with every MCP-compatible AI client.

What MCP Is

MCP (Model Context Protocol) is an open standard introduced by Anthropic in November 2024. By 2026: - OpenAI adopted it across ChatGPT desktop - Google DeepMind integrated it into their AI products - Anthropic donated it to the Agentic AI Foundation under the Linux Foundation - SDKs exist for Python, TypeScript, C#, and Java - Thousands of MCP servers are available for databases, APIs, file systems, and more