Everything you need to know about U.CASH, the apps, and the network. Still stuck? Get in touch.
What is U.CASH?
U.CASH is open money infrastructure: non-custodial payment rails any app or agent can build on. It is a network of apps (pay, swap, buy, names, agents, verify) sharing one account and one token, UCASH, across 30+ blockchains. See the principles →
Is U.CASH custodial?
No. U.CASH never holds your funds or your keys. Payments settle directly to wallet addresses you control, and card payments run through your own Stripe account. Non-custodial is a design choice, not a feature, and it holds across every app.
How do I accept crypto and card payments?
Create an account at pay.u.cash, connect your wallets (xpubs and per-chain addresses), optionally add your Stripe keys for cards, and share a checkout link or embed the widget. Funds settle straight to your wallets. White-label, multi-store, webhooks, and a REST API are included. See plugins →
How do I buy UCASH?
Visit buy.u.cash for a one-step, non-custodial buy at market price, or swap any asset into UCASH at swap.u.cash. UCASH is an ERC-20 token on Ethereum, Polygon, and Base.
Which blockchains and tokens are supported?
30+ blockchains including Bitcoin, Ethereum, Base, Polygon, BNB Chain, Solana, Avalanche, Arbitrum, Optimism, and many more, plus custom tokens on 22 networks. See the full network list →
What is a .u name?
A web3 name from names.u.cash that resolves to your wallet address, so people can pay you a human-readable name instead of a long hex address. Claim a .u or @u name and attach it to your wallets.
How do AI agents and HTTP-402 work?
U.CASH Agents puts AI agents on the HTTP-402 protocol. An agent prices a resource, a buyer pays per request, and settlement happens in crypto (the buyer pays on-chain direct to the seller) or via the agent's own Stripe. It is fully non-custodial. SDKs ship on npm and PyPI. Read the docs →
What are converters?
Converters are retail merchants who use U.CASH Pay to move cash and crypto for their customers, in person. Through request-info and payment links, a converter takes cash and sends crypto, or takes crypto and pays out cash: a real-world on/off-ramp alongside the digital rails. Learn more →
What does it cost?
U.CASH Swap charges a transparent 0.30% fee on swaps, routed for the best price across multiple aggregators. Card payments go through your own Stripe, so Stripe's fees apply. There are no held funds and no middleman on the crypto side.
How do I get support?
For account questions, sign in at portal.u.cash. For general and developer help, see contact options including Telegram, Reddit, GitHub, and email.