How the OpenAI Apps SDK Works
The OpenAI Apps SDK uses the Model Context Protocol (MCP) to connect ChatGPT with external tools and APIs. It lets developers build interactive app UIs inside ChatGPT that react to user input and context in real time.
When a user interacts with your ChatGPT app, the model sends structured requests to your MCP server, which executes logic, calls APIs, and returns results as context-aware responses rendered directly in the chat.
This setup enables secure data exchange and smooth, interactive experiences, all running inside ChatGPT.