Hello, welcome back to the Ruby Advent Calendar 2017. Let’s continue the series on Day 7 with webservice - Script HTTP JSON APIs (web services) in classy Sinatra 2.0-style get / post methods with Mustermann 1.0 route / url pattern matching. Load (micro) web services at-runtime using Webservice.load_file. Get a free wiener lager, welsh red ale or kriek lambic beer delivered to your home (computer) in JSON and much much more. Cheers. PS: You’re more than welcome to send in your articles (about your library / gem of choice) too!