I want to add OpenAI functionality to my custom-built website. For this first phase I only need a straightforward, working integration that proves the concept and can be expanded later. Scope • Connect my site to the official OpenAI API (ChatGPT/Completion endpoint). • Create a simple front-end element—a text box and response area—that shows the model replying in real time. • Set up environment variables or another secure method to store the API key. • Provide clear, commented code so I can extend the feature to customer service, product recommendations, or behavior analysis in the future. Deliverables 1. Fully functional code added to my existing codebase (front-end and back-end as needed). 2. Brief, step-by-step install & usage guide. 3. A quick hand-off call or screen-share (optional, but preferable) to make sure everything runs on my server. The site is custom-built, so please be comfortable working without WordPress or Shopify plugins. If you have done similar lightweight integrations, let me know—links or brief demos are ideal.