Binance x402

Empowering the future of blockchain transaction flows

Multi-chain, multi-token support. Built for agents and developers

Getting Started With B402

{
        "x402Version": 1,
        "paymentPayload": {
                "x402Version": 1,
                "scheme": "exact",
                "network": "eip155:56",
                "payload": {
                        "signature": "0xf3746613c2d920b5fdabc0856f2aeb2d4f88ee6037b8cc5d04a71a4462f134801234567890abcdef1234567890abcdef1234567890abcdef",
                        "authorization": {
                                "from": "0x742d35Cc6634C0532925a3b844Bc454e4438f44e",
                                "to": "0x8B3a350e2f3E6B9cC6FB10Fd106bA08f08bec5D2",
                                "value": "1000000",
                                "validAfter": "0",
                                "validBefore": "1710000600",
                                "nonce": "0x1234567890abcdef1234567890abcdef1234567890abcdef1234567890abcdef"
                        }
                }
        }
}

What is Binance x402?

Binance x402 is a transaction verification and submission API. We make it easy for developers to execute user-authorized, on-chain token transfers across all supported networks.

Why Use Binance x402?

Developer Friendly

Build Faster, Pay Smarter: The Ultimate payment API for developers.

Multi-Token Support

Support USDT, USDC, U, USD1, and more - not just one specific token.

Agentic Payment Gateway

The payment layer for the agentic web - via gas sponsorship.

Pay-Per-Request

Forget monthly subscriptions. Users only pay for exactly what they use.

Binance x402 Payment API

Click "View API Documentation" to explore the API details

Apply for API Key, and start the integration process

Launch, scale and start your business within seconds

Binance x402 (B402) provides developer infrastructure for x402-compatible on-chain transaction flows on supported networks. It is a non-custodial technical service, not a wallet, payment account, stored-value facility, or consumer financial product. In the standard integration flow, assets move directly on-chain between user-designated and merchant-designated addresses, and Binance x402 (B402) does not take custody of payment tokens. Use is subject to eligibility, terms, and jurisdictional availability.