MCP (Model Context Protocol): The Backbone of ChatGPT Apps
One-liner: MCP is the contract that lets your ChatGPT App and ChatGPT talk the same language—for messages, tools, and inline UI. It standardizes how you define capabilities, pass structured inputs/outputs, render in-chat widgets, and keep everything safe with scopes and consent. If you’re new to the ecosystem, start with What Are ChatGPT Apps? and How…