Model Context Protocol (MCP)

The Model Context Protocol is an open standard originally developed by Anthropic that defines how AI coding assistants communicate with external systems. Instead of copying and pasting information into chat windows, developers connect their AI tools to MCP servers that expose structured operations like reading files, querying databases, or searching knowledge bases. The AI assistant discovers available tools at startup and calls them as needed during a conversation.

For game development, MCP is transformative because it bridges the gap between the code an AI assistant can see and the design documents it cannot. A developer working on the combat system can ask their AI assistant to look up the latest damage formula in the GDD, check which entities reference the player character, or compare the current balance spreadsheet with last week's version. All of this happens inside the terminal or IDE, without switching tabs or manually copying text.

MCP servers are lightweight and run locally or on a remote endpoint. They authenticate via API tokens, so each developer controls what their AI assistant can access. The protocol supports tool discovery, typed parameters, and structured responses, making it reliable enough for production workflows.