Contact person: Gaming Site UPI Button Integration

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Location: Delhi, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"My browser-based gaming site is built entirely with custom HTML, CSS and a little vanilla JavaScript. I now need a single, reliable UPI Intent payment button that will let players top-up quickly through any app—Google Pay, PhonePe, Paytm or whichever UPI client they have installed.

Here’s exactly what I’m after:

• A lightweight, mobile-first UPI Intent flow triggered from one “Buy Coins” button embedded in an existing modal.
• Automatic hand-off to the player’s preferred UPI app, return to my success/fail URL, and clear status handling so balances update instantly.
• Clean, well-commented code that I can drop into my current codebase plus a short read-me explaining any keys, hashes or headers I’ll need to generate on my end.
• A brief test log or screencast proving at least one successful and one failed transaction on a sandbox or ₹1 live charge, so I know the callbacks behave as expected.

I’m not tied to any single gateway or SDK as long as the final button works with all common UPI apps and keeps my page lightweight. If you have previous experience with UPI Intent on static sites, this should be straightforward; please let me know your estimated turnaround and any questions you have once you’ve seen the existing markup." (client-provided description)