Accept crypto and cards
Set up a checkout, connect wallets, add Stripe, and get paid. Open Pay →
Start here to get the most out of U.CASH. Each guide links to the live app and its developer documentation.
Set up a checkout, connect wallets, add Stripe, and get paid. Open Pay →
Trade 30+ chains non-custodially and understand the 0.30% fee. Networks →
Buy the network token in one step, non-custodial. About UCASH →
Get a .u or @u name and point it at your wallets. Names →
Put an AI agent on HTTP-402 and sell per request. Agent docs →
Install a plugin or use the universal embed. Plugins →
REST API, signed webhooks, and checkout flows. pay.u.cash/docs →
JavaScript and Python SDKs on npm and PyPI. agents.u.cash/docs →
What it means that U.CASH never holds your funds. See Technology.
How merchants move cash and crypto in person. See Network.
The protocol for machine-to-machine payments. See Agents.
Have a question? Check the FAQ or contact us.