32What MCP is

Picture your AI sitting in a room with no windows. It's clever, but it only sees what you typed to it. MCP is the hole in the wall it reaches through: to look into your GitHub, open a browser, read current documentation, check a database.

It stands for Model Context Protocol, but you don't need to remember that. The point is simple: it's a shared standard. Everyone agreed once on how services talk to AI, and now any service works with any AI. Without it everyone would be inventing their own wheel.

What it looks like in practice. Install MCP for GitHub and it creates branches and pull requests itself instead of dictating commands for you to copy. Install Playwright and it opens your site in a browser and looks at it with its own eyes, instead of guessing from the code why the button moved.

There are now more than seventeen thousand servers. Installing all of them is a bad idea, and the next node explains exactly why.