OpenAI just announced the Apps SDK during OpenAI DevDay 2025. It quietly introduced something important, transforming ChatGPT from a Chat app to an App Platform. I wanted to understand how this works in practice, so I decided to build something small: a to-do app (because, well, this is something you build when you learn something … Continue reading How to Create a ChatGPT App Using MCP (Model Context Protocol) Step by Step →