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Introducing UMA Playground

Lightspark Team
Apr 09, 2025
5 min read

UMA Playground – Interactive Demos, Open-Source Code

Quickly grasp UMA transaction flows and see how UMA can power seamless payments in your apps. Dive into interactive demos, inspect open-source code on GitHub, and explore UMA Auth—an extension powered by Nostr Wallet Connect (NWC) that lets users delegate payment permissions to third-party apps.

Try it now – Spin up a test UMA, preloaded with fake funds.

UMA Test Wallet – Build & Test UMA Wallets

Developers can create test UMA wallets, transact between them, and integrate UMA Auth for real-time, FX-based payments on the regtest network. The Test Wallet is ideal for:

  • Simulating wallet experiences
  • Sending/receiving UMA payments with real-time FX quotes
  • Authorizing third-party apps with UMA Auth
  • Testing UMA Auth client apps
  • Managing multiple UMA addresses under one account
  • Open-source GitHub repo available

Try it now - Customize wallet colors, switch between wallets, and see transactions in action.

Pennywall – Unlock Content with Microtransactions

Pennywall is an open-source demo showcasing instant, low-cost payments via UMA Auth. Users pay per scroll to unlock content in real-time.

Try it now - Clone & build your own microtransaction-powered app.

Make Cents – Incentivize User Engagement with Instant Payments

Make Cents demonstrates how UMA Auth can drive user actions with microrewards. Users get real-time payments for:

Payments pause when the user stops watching and resume when they continue. Perfect for engagement-based monetization models.

Get Started

Start building with UMA – docs.uma.me
Join the developer community – Discord
Need help? Reach out at hello@uma.me

The future of programmable money is here—start building today! 🚀

UMA is powered by Lightspark—the fastest, most open global payments network on Bitcoin. Learn more about Lightspark and how we’re building the infrastructure for seamless, borderless payments: https://www.lightspark.com/