The internet runs on open protocols for everything except money. U.CASH fixes that: non-custodial payment rails any business, dev, app or agent can build on, with pay, swap, buy, convert, and names on one shared network across 30+ chains.
Network data as of July 2026. UCASH on Etherscan, Polygonscan, Basescan. Browse 125 integrations.
The U.CASH payments rail: 30+ blockchains and custom tokens across 22 networks, fiat cards, white-label and non-custodial. Accept, request, invoice, and even pay out cash for crypto in person. Live in minutes, no held funds.
One link or widget accepts every coin and card. Customers choose; you get paid.
Connect xpubs and per-chain wallets. Funds settle directly to addresses you control.
Fiat cards through your own merchant account: fully non-custodial, no middleman.
Your logo, colors, and domain. The payment surface is yours: we're the rails.
REST API, signed webhooks, and SDKs. Build invoicing, splits, and any payment flow.
We never hold your funds. Payments settle straight to your wallets. By design.
Run many stores from one account: each with its own branding, wallets, and webhooks.
Email a Pay-Now link or a full invoice: get paid without a storefront.
Automatic merchant notifications and customer receipts, via your own SMTP.
Converters are retail merchants who use U.CASH Pay to move cash↔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.
A non-custodial aggregator routing across 30 chains via multiple connected aggregators, plus instant exchange for Bitcoin and 1,500+ coins. Your wallet signs every swap.
Put AI agents on the HTTP-402 protocol: they sell priced resources and buy services per request, in crypto or by card. Non-custodial end to end.
Built-in support for Bitcoin, Ethereum, Solana, Tron, and 25+ more, plus any custom token across 22 networks, including 12 newly-added EVM chains: Linea, Mantle, Berachain, Sonic, Unichain, Worldchain, Monad, Plasma, Abstract, HyperEVM, Scroll, and Ink.
Add any token by wallet + contract across 22 networks: ERC-20, BEP-20, Base, Polygon, Arbitrum, Optimism, TRC-20, SPL, and 12 new EVM chains.
You define what "paid" means: set confirmation policies per coin, per store.
Bitcoin HD wallets via xpub, plus Lightning support: generate receive addresses without holding keys.
Pay to ENS, Unstoppable Domains, and FIO handles: no copy-pasting long addresses.
Browse every coin by intent:
One account unlocks every U.CASH app. Set up once, then pay, swap, buy, name, and automate, however you want.
Register once at U.CASH Portal and your single U.CASH account works across pay, swap, buy, names, agents, send, and verify. No separate logins, ever.
Bring the wallets you already use: Bitcoin xpubs, EVM addresses, Solana, Tron, and more. Funds always settle to addresses you control.
Accept a payment, swap a token, buy UCASH, claim a .u name, or let an agent sell for you. Start anywhere: the rest is one click away.
Multiple apps, one account. Each lives on its own u.cash subdomain: pick where to start.
Crypto and cards in one white-label, non-custodial checkout. Hundreds of coins across 30+ chains.
Swap between cryptocurrencies directly from your wallet: non-custodial, multi-chain.
Buy UCASH with crypto: the buy-UCASH flow of U.CASH Swap. Fast, non-custodial.
Claim a .u domain (Unstoppable Domains), @u handle (FIO), and other UCASH web3 names.
HTTP 402: let AI agents pay per request, on-chain or by card. Non-custodial.
Verify your UCASH balance and email address to unlock benefits and premium features.
Send UCASH or any token to many wallets from a CSV, in one on-chain batch. Non-custodial.
125 open-source plugins, SDKs, and integrations across e-commerce, billing, POS, memberships, automation, chat, and AI agents. Plus a universal embed for any website. Non-custodial: funds settle direct to your wallet.
Your keys, your funds. No U.CASH app ever holds your money: payments settle to wallets you control.
Ethereum, Polygon, Base, Bitcoin, Solana, and more: 30+ chains supported out of the box.
A single U.CASH account works across pay, swap, buy, names, agents, send, and verify.
Open APIs, open standards (UCP, HTTP 402), and interoperable web3 names. Build on U.CASH without lock-in.
A universal embed, a REST API with signed webhooks, SDKs across 12 language registries, an MCP server, and open standards (HTTP 402, UCP). Non-custodial rails for any app or agent.
Zero-dependency clients across JavaScript, Python, Rust, Java, .NET, Elixir, Go, Swift, Ruby, PHP, Flutter, and Deno. One createCheckout + verifyWebhook contract everywhere.
Put agents on the 402 protocol with the agents-u-cash SDK, the mcp-ucashpay server, and the open UCP standard. Agents sell and buy per request.
Drop in the universal embed script, or call the REST API server-side with HMAC-signed, replay-safe webhooks. Live in minutes.
UCASH is the U.CASH network access and loyalty token. Buy it, swap it, hold it, and use it across pay, swap, names, agents, and more.
UCASH lives on Ethereum, Polygon, and Base. Always verify the address before trading.
Sign in to the portal to manage your account, wallets, and bounties: across every U.CASH app.