Why MCP-based ChatGPT Apps fail in practice (and a minimal working starter) (github.com)

A new starter kit has been released for developers wanting to build ChatGPT apps using Node.js and TypeScript, featuring a minimal Model-Predict-Construct (MPC) server deployed on Vercel. This open-source repository includes essential components such as a deterministic tool, a UI resource, and the necessary endpoints for streaming HTTP and Server-Sent Events (SSE), all designed to be lightweight and easily auditable. Developers can also opt for a paid “Pro” package that adds extra examples and templates for those wishing to scale their applications further. This kit significantly benefits the AI/ML community by providing a streamlined approach to building ChatGPT applications without the overhead of larger frameworks. The focus on determinism and clarity allows for easier debugging and adaptation, making it ideal for teams that prefer starting with a compact template. With built-in support for comprehensive features like CORS handling, session management, and health checks, this starter kit is set to enhance productivity for developers while facilitating rapid prototyping of ChatGPT applications.