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U.CASH Pay Documentation

Non-custodial crypto and card payments for your store, app, or teller counter. Set up in minutes, keep your own keys, get paid in 51 assets across 32 networks.

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What is U.CASH Pay?#

U.CASH Pay is a payment platform where you always hold your own funds. Payments go straight to addresses you control, the console never takes custody, and every checkout can also offer cards (Stripe, PayPal, 2Checkout) or bank transfer alongside crypto.

  • Non-custodial by design - receiving wallets are yours; the platform never holds customer funds
  • Crypto + cards + bank - one checkout, every major rail
  • Online and in person - hosted checkout, embeds, invoicing, POS, and a teller console with a public map
  • Agent-native - HTTP 402 (x402) machine payments for AI agents
  • White-label ready - run the whole thing under your own brand and domain

Quick Start#

1. Create an account

Sign up at pay.u.cash. The first user on an account is the Owner.

2. Add your wallets

Enter the receiving addresses you control for each coin you want to accept.

Address generation

3. Create a checkout

Hosted payment link, embedded button, invoice, POS sale, or API call - your choice.

Embed, API & SDKs

4. Get notified

Watch confirmations land in the console and receive signed webhooks on your server.

Webhooks

What you can build#

  • Hosted checkouts and invoices - clean URLs, custom fields, pay-what-you-want, tax lines
  • Embedded payments - payment buttons and an Add Funds module for your site or app
  • Storefronts - a full Shop builder plus single-item Landers, no code
  • In person - POS terminal (tabs, floor plans, kitchen display) and a teller console with tiered commissions, listed on the public U.CASH map
  • Payouts - withdraw settled funds to your own wallets on demand
  • Agents - let AI agents pay and get paid over x402, gasless via the default relayer
  • White-label - your brand, your domain, your pricing tiers

Coins, chains, and rails#

Bitcoin (on-chain and Lightning), Ethereum and its L2s, USDT and USDC across seven chains each, Monero, Solana, TON, XRP, and more - see the full list with confirmation behavior on the Coins & Chains page. Cards run through your own Stripe, PayPal, or 2Checkout account; bank transfer is built in.

Getting help#

Stuck? See Troubleshooting first, then open a support ticket from the console (Help → Support) or the contact page. Platform changes are tracked on the Updates page.