Accept any stablecoin,
on any chain,
in 10 minutes.
One API and one SDK to send and receive USDC, USDT and PYUSD across chains. The payments layer built for SaaS and AI agents.
USDC
USDT
PYUSD
Base
Solana
PolygonPayments
Total volume
$127,430.00
+24.6%Acme Inc.
0x8d3…a7f1
SaaS Co.
0x7fb…3c9e
AI Agent
0x2fa…b91d
Web3 Store
0x9be…d2aa
Pay
BaseSecured by 0xkey pay
const oxkey = new OxKey({ apiKey })
await oxkey.pay.checkout.create({
amount: 10,
currency: 'USDC',
})Supported assets and networks, live today
USDCUSDTPYUSDBaseSolanaPolygon0%
Flat fee
vs 2.9% + 30¢ on cards
0 min
To first payment
Sandbox to live
0+
Chains
Base, Solana, Polygon
0.00%
Settlement uptime
Multi-region rails
Three ways to integrate
From a hosted page to a full API — pick the level of control you need. The same dashboard, account, and webhooks back all three.
Checkout
Hosted payment page. Drop in a link or QR — no frontend code required.
Elements
Embeddable React and Vue components when you want to own the checkout UX.
API
REST + webhooks. One integration for x402, agent payments, and EIP-3009.
const payment = await oxkey.pay.create({
amount: 49.99,
currency: 'USDC',
referenceId: 'ord_1042',
successUrl: 'https://app/done',
})
// → webhook: payment.settled
// { paymentId, txHash, payer, amount }Create a payment, receive a webhook, reconcile in your dashboard.
A Stripe-grade developer experience over stablecoin rails. We handle chains, gas and settlement so you only deal with payments.
- Create a payment with a single API call
- Receive a signed webhook the moment it settles on-chain
- Reconcile every transaction, tx hash and fee in your dashboard
Built for every layer of the stack
One integration, four ways to put it to work. The same dashboard, keys and webhooks back every audience.
Stablecoin checkout, like any other payment method.
Add USDC, USDT and PYUSD next to your card processor. Hosted checkout, embeddable elements, and instant payouts — no chain knowledge required.
- Drop-in Checkout link or QR in minutes
- Global reach without card-network borders
- 60–70% lower fees than card rails
SaaS · example
await oxkey.pay.checkout.create({
amount: 29,
currency: 'USDC',
successUrl: 'https://app/ok',
})Enterprise-grade by design
Built on the 0xkey TEE wallet infrastructure, with the controls payments and compliance teams expect.
TEE-backed signing
Keys are generated and used inside AWS Nitro Enclaves. Even 0xkey cannot read them.
Non-custodial flow
Funds settle directly to your registered addresses. We never custody balances mid-flow.
Clean reconciliation
Auditable, machine-readable records with tx hash, fee and settlement time on every payment.
Signed webhooks
Every settlement is delivered as a signed, replayable event keyed by an idempotent payment ID.
Address allowlisting
Payouts can only settle to registered pay-to addresses verified against your merchant org.
Multi-region rails
Settlement infrastructure runs multi-node and multi-region for predictable, resilient uptime.
Frequently asked questions
No. Checkout works with 0xkey Company Wallets and agent wallets out of the box, and external wallet payers are supported so buyers can pay with the wallet they already use.
Stablecoin settlement avoids interchange and cross-border fees. Most accounts pay a single flat fee around 1%, which is 60–70% lower than typical card rates of 2.9% + 30¢.
No. By default our shared relayer covers gas and routing. Enterprises can opt into a bring-your-own gas wallet, with keys still held inside the enclave.
You can sign up and run sandbox payments with no KYC. Verification is asynchronous and only required before settling real volume above set thresholds.
The same API natively supports x402, agent payments and direct EIP-3009 authorizations, so you integrate once and let the router pick the right protocol per request.