Multi-Chain SDK v2.4 Now Available

The Stablecoin
Payment Engine

Stripe-grade developer experience for stablecoin payments. Accept USDC, USDT, and EURC instantly on Solana, Arbitrum, Polygon, and Ethereum. Settle directly into your vaults in 2 seconds.

$4.2B+

Volume Settled

< 2.1s

Settlement Speed

99.99%

SDK Uptime

0%

Chargebacks

Instant Settlement

Transaction complete

Success
Gross Settlement:$1,450.00 USDC
Network Fee:$0.00 (Sponsored)
Settled On:Solana Blockchain
Gas-less Routing

Fees auto-sponsored

CONNECTED WALLET
sol...9aZ3xW
Developer Sandbox

Interactive SDK Explorer

Configure parameters inside the checkout widget simulator. View the generated SDK payload update instantly, execute a test payment transaction, and watch webhooks stream in the terminal.

9:41
5G
AirPay Checkout
Total Amount
$150USDC

demo_order_invoice_3802

Transaction Size:$150
Stablecoin
Settlement Chain
SENDER DEPOSIT ADDRGAS SPONSORED
H7xG8yL2kP1m5N3oQ4rS6tU8vW0xY2z
import AirPay from '@airpay/sdk';

const airpay = new AirPay('sk_live_51P8...');

// Create checkout session
const session = await airpay.checkout.sessions.create({
  amount: 15000, // cents ($150.00)
  currency: "usdc",
  network: "solana",
  customer_email: "developer@airpay.io",
  success_url: "https://yourdomain.com/success",
  cancel_url: "https://yourdomain.com/cancel",
});

console.log("Hosted Payment URL:", session.url);
Copy SDK integration boilerplate code.Read SDK Guides
Sandbox Environment Active
REST API v2.4
Operational Metrics

Real-time Analytics

Monitor settlement velocity, gross payments volume, routing finality and transaction records updated live in sandbox.

Feed Enabled
Gross Volume
$2,105
Sandbox mock accumulation
Success Rate
99.98%
Zero failed contract instances
Avg Settlement
1.8s
Solana finality speeds

Settlement Velocity (USD equivalent)

Visual graph representation of payment amounts

Gross Value
$450
$125
$80
$1200
$250
Timeline sequence logsValues represented in USD equivalent

Live Ledger Feed

Real-time payment finality

US
$250USDC
Solana network
tx_905
Settled
US
$1200USDC
Ethereum network
tx_904
Settled
EU
$80EURC
Polygon network
tx_903
Settled
US
$125USDT
Arbitrum network
tx_902
Settled
US
$450USDC
Solana network
tx_901
Settled
Settlement Treasury Vault
0x5c...89d1
Product Infrastructure

Built for Enterprise Scale

Accepting digital payments should not require holding volatile gas tokens. AirPay abstracts blockchain ledger rails into a single type-safe API checkout session.

Fastest

Sub-Second Settlements

Direct-to-vault payouts. Bypass traditional clearing delays to achieve instant liquidity finality.

Explore documentation
Irreversible

Zero Chargeback Risk

Cryptographic consensus guarantees payment intents. Protect your business from fraudulent chargebacks.

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Exclusive

Sponsored Gas Relay

AirPay gas sponsoring sponsors layer-2 and Solana network fees out-of-the-box for friction-free checkouts.

Explore documentation

Smart Chain Routing

Multi-path execution contracts dynamically navigate Polygon, Arbitrum, Solana, and Ethereum.

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Developer First SDK

Type-safe libraries across JavaScript, Go, Python, and Rust. Robust logs, CLI toolkits, and mock sandboxes.

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Non-Custodial Vaults

P2P rails settle directly to your corporate vaults. AirPay never holds your assets, eliminating custodian risk.

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Scale your billing infrastructure

Create an developer credentials keys, read step-by-step guides, or launch custom checkout sessions in sandbox.

Get Api Credentials