The basic idea is we wanted a hosted Postman which allows you to wire your endpoints together "lego-style" into workflows (step 1 is authenticate, step 2 is fetch a list of users, step 3 is update the first user in the list). You can then shoot someone a URL and they can hit the "play" button and the API calls execute before their eyes. Some other notable features we've added are team support, versioning, and dependency tracking.<p>The drawback of most hosted services like this is you can't see things on private networks, like localhost or a corporate intranet. We have an OS X native app to circumvent this and a Windows version is coming soon.<p>We'll try to answer any questions you might have, thanks for checking it out!