0x

0x is an open protocol and developer platform for decentralized exchange infrastructure, designed to help applications embed crypto trading directly into their products. Built for the Web3 ecosystem, 0x enables wallets, apps, and marketplaces to connect users to deep digital asset liquidity through a single integration, while relying on open smart-contract infrastructure for onchain settlement.

Today, 0x is best known for its API-based trading infrastructure, especially Swap API, which allows developers to power token swaps inside their own applications with access to liquidity from 100+ exchanges and market makers across multiple chains. This makes it easier for products to offer efficient execution, broad token coverage, and a smoother user experience without building complex routing and liquidity systems from scratch.

Beyond simple token swaps, 0x provides tools that help developers create more seamless and commercially viable onchain products. Its Gasless API is designed to reduce friction in DeFi by enabling gasless transactions and approvals in supported environments, while its Trade Analytics API gives teams visibility into user trading activity and performance. 0x also emphasizes fast integration, monetization options, and infrastructure that can support wallets, trading apps, and other financial products built on crypto rails.

With roots dating back to the early growth of decentralized finance, 0x has evolved from a protocol for peer-to-peer exchange into a broader developer platform for embedded onchain trading. Its technology is used to support everything from token swaps and wallet features to in-app marketplaces and other digital asset experiences, helping teams bring crypto-native functionality into consumer and enterprise products more quickly.