According to an official announcement cited by ChainCatcher, Binance Wallet has launched Web3 API, a comprehensive set of API endpoints designed for developers, institutions and advanced on-chain traders. The API allows users to access on-chain trading functions and market data programmatically through a single integration. The announcement presents the product as a unified interface for data retrieval, aggregated quotes and on-chain transaction execution.
Support for Ethereum, Solana and other networks
The Web3 API supports multiple chains, including Ethereum, BNB Smart Chain, Plasma, Arbitrum, Polygon, Base, Monad, Optimism, Linea and Solana. After integrating the API, developers can access real-time market data across these networks and use functions for aggregated swap quotes and on-chain trade execution. The single-integration approach is a central part of the product description in the announcement.
The market data API includes real-time token prices and K-line data. The trading API includes aggregated quotes, token swaps and built-in MEV protection. These functions are listed as key features of the product, covering data access, quote retrieval, swap execution and the submission of on-chain transactions.
Non-custodial design and current fee terms
Binance Wallet also said the Web3 API uses a non-custodial architecture. It does not hold private keys, and users sign transactions locally. The announcement also describes the API as offering enterprise-grade reliability. At present, the API charges zero service fees and zero positive slippage fees, with all price improvements returned to users.
According to the official announcement, the API is intended for developers building DApps, on-chain trading bots and AI agents. Through the API endpoints, developers can call market data, aggregated quote and trade execution features within their products while using a non-custodial local signing process. The launch packages multichain data access and on-chain transaction execution into one API framework.