AI API Integration (OpenAI + NestJS Backend Endpoint)

Project Overview We need a small development task to integrate an AI feature into an existing NestJS (Node.js) backend using the OpenAI API. The goal is to create a single, well-structured API endpoint that can process user input, send it to an AI model, and return a clean, formatted response. Key Tasks Module Setup: Setting up or extending an existing NestJS backend module. OpenAI Integration: Integrating OpenAI API securely (using environment variables for API keys). Error Handling: Handle basic error handling (invalid input, API failure, etc.). Code Quality: Ensure clean and maintainable code structure. Deliverables Fully working NestJS endpoint with OpenAI integration. Clean and readable source code. Basic usage documentation (how to call the endpoint). Timeline This is a small scoped task and should be completed within 1–2 days.