Overview

Binance Web3 API is a developer-oriented on-chain data and trading service platform, providing unified RESTful APIs covering market data, trading aggregation, on-chain transaction simulation and broadcasting.

Architecture

Code
Client
  │
  ▼
Gateway        ← Auth / Signature Verification / Rate Limiting
  │
  ├──→ Market API        Real-time prices, candlesticks, token analytics
  ├──→ Trading API       Cross-DEX aggregated quotes and swaps
  ├──→ Transaction API   On-chain transaction simulation and broadcasting
  └──→ Wallet API        Wallet balance queries

API Modules

Unified Response Format

All endpoints return the OCResult<T> format:

Code
{
  "code": 0,
  "msg": "success",
  "data": {},
  "timestamp": 1713500000000,
  "success": true
}

• code = 0 indicates success; non-zero values are error codes
• data contains business data, typed per endpoint
• timestamp is the server timestamp in milliseconds
• success is a convenience flag derived from code == 0