Rango is the intuitive UX that integrates multiple aggregaters (e.g. 1Inch) and multiple X-Chain options (e.g. Thorchain) to provide the best liquidity, optimized path, and secure and easy-to use solution. Rango exchange offers a flexible API that allows dApps to connect to multiple blockchains, track transactions, verify third-party providers, and so on. Our API was designed to be the most user-friendly on the market. The API is made up of a handful of endpoints that have simplified a lot of the complexity on the server's part. This makes it easy to create a cross-chain dApp that works over cosmos, Ethereum based blockchains and UTXOs. Our service is currently available for free. To use our API endpoints, however, you will need an API key. This key will describe your dApp and the blockchains you would like to connect to. It will also include your dApp domain, if it is a website that allows CORS headers.