Most applications interact with the HC Net throughAurora, a RESTful HTTP API server. Aurora gives you a straightforward way to submit transactions, check accounts, and subscribe to events. Because it’s just HTTP, you can communicate with Aurora using your web browser, simple command line tools like cURL, or the HC Net SDK for your favorite programming language.
HCNet.org maintains JavaScript, Java, and Go-based SDKs for communicating with Aurora. There are also community-maintained SDKs for Ruby, Python, and C#.