Binance Pay Onchain Developer Documentation

Binance Pay Onchain provides developer APIs for fiat-to-crypto on-ramp, onchain crypto payments, merchant payout-to-Binance-account flows, institutional embedded buy/sell services, and agentic x402 payments.

Use these docs to integrate Binance-powered payment and crypto access flows across hosted checkout, onchain settlement, institutional buy/sell, and agent-driven payment use cases.

Choose your product documentation

Hosted Ramp & Onchain Payment APIs

For wallets, dApps, Web3 apps, merchants, and payment partners that want to offer hosted fiat-to-crypto purchase flows, onchain crypto payment flows, merchant payout-to-Binance-account flows, and related configuration options.

This product path was formerly documented under Binance Connect.

Institutional Embedded Buy/Sell Solution

For institutional clients, banks, fintechs, brokers, and large platforms that want to embed crypto buy/sell services directly inside their own financial product.

This product path was formerly documented under Binance Connect Prime.

Agentic Payments

For AI agents, automated clients, API providers, and paid HTTP-resource providers that want to support x402-style payments on BNB Chain.

Agentic Payments supports x402 payment flows on BNB Chain using supported stablecoin payment assets including USDT, USDC, U, and USD1.

This product path is powered by B402 / x402.

Important

Each documentation area serves a different client type and integration model. Most clients should start from only one product documentation area based on the integration scope confirmed by Binance.

For more information or access-related questions, contact binanceconnect@binance.com.