Building a digital membership system with OpenAI

ChatGPT Use cases and examples
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Hi everyone,

I’ve been working on a digital membership card system using .NET, where users can access their membership cards digitally (similar to mobile wallet-based solutions).

During development, I explored multiple AI tools like OpenAI API, DeepSeek, and Grok. From my experience, OpenAI has been the most helpful for coding and development tasks.

Here are a few things I found useful:

  1. It generates clean and structured .NET backend code.

  2. It helps debug complex issues quickly.

  3. It provides good support for API integrations.

  4. It suggests better architecture and coding practices.

Right now, I am working on:

  1. Digital membership card generation

  2. QR code-based validation system

  3. Apple Wallet and Google Wallet integration

  4. CRM integration (currently in progress)

I wanted to ask the community:

  1. What are the best practices for scaling such systems using OpenAI APIs?

  2. How can I optimize API usage and cost?

  3. Has anyone built something similar with wallet-based membership systems?

Would really appreciate your suggestions and feedback.