According to an official announcement cited by Odaily, Binance Wallet has launched Web3 API, a comprehensive set of API endpoints designed for developers, institutions and advanced on-chain traders. The product allows users to access on-chain trading and market data programmatically through a single integration. Rather than offering only one isolated function, the API combines market data access, quote aggregation and on-chain transaction execution within one service framework.
Multi-chain access through one integration
The announcement says Binance Wallet Web3 API supports multiple blockchain networks, including Ethereum, BNBSmartChain, Plasma, Arbitrum, Polygon, Base, Monad, Optimism, Linea and Solana. Its core functions include real-time market data, aggregated swap quotes and execution of on-chain transactions. Developers can use these capabilities when building products that need to interact with different on-chain environments.
On the market data side, the API provides real-time token prices and candlestick, or K-line, data. These endpoints can be used by applications that display price information, track token movement or connect price feeds to strategy systems. Binance Wallet describes the release as a broad set of Web3 API endpoints, not merely a standalone swap interface.
Swap quotes, MEV protection and local signing
The trading API includes aggregated quotes, token swaps and built-in MEV protection. Aggregated quotes are used to provide swap references, while the token swap function supports the execution of on-chain transactions. MEV protection is included as part of the trading flow. The announcement also states that the API follows a non-custodial architecture: it does not hold private keys, and users sign transactions locally.
Binance Wallet said the API currently charges zero service fees and zero positive slippage fees, with all price improvements returned to users. The announcement also refers to enterprise-grade reliability. Based on the official description, the Web3 API is intended for developers building DApps, on-chain trading bots and AI agents.