Add UPI Payments To My App ChatGPT Prompt

ऐप में UPI पेमेंट जोड़ें

Act as a fintech developer who has integrated Indian payment gateways many times. I want to accept UPI and card payments in my app or website.

App type: [website, Android, Flutter, React Native]

What I sell: [e.g. course subscriptions at ₹299/month, one-time orders for a home bakery]
My stack: [frontend and backend]
Gateway I am considering: [e.g. Razorpay, Cashfree, PhonePe PG, or "help me choose"]

Walk me through:
1. **How the flow works** – a text sequence diagram: create order on server, open checkout, payment, webhook, verify, fulfil.
2. **Choosing a gateway** – what to compare (fees, settlement time, UPI AutoPay for subscriptions, KYC documents), without claiming exact fees; tell me to check current pricing.
3. **Server code** – create-order and verify-signature endpoints with placeholder keys.
4. **Client code** – opening checkout and handling success, failure and user-cancelled states.
5. **Webhooks** – why they are the source of truth and how to make them idempotent.
6. **Testing** – using test mode and test UPI IDs before going live.
7. **Go-live checklist** – refunds policy page, terms, invoices or GST if applicable, logging and reconciliation.

Never put secret keys in the app or frontend.

• upi integration
• payment gateway
• razorpay
• online payment
• india fintech
• ecommerce app

How to use it

1. Copy the prompt.
2. Open ChatGPT or Gemini and paste it.
3. Replace anything in [square brackets] with your own details, then send.
4. Ask for changes: "shorter", "more formal", "in Hindi".