Cash Register Integration API Describes a Websocket API, where VisioLab acts as a server. Uses the AsyncAPI standard to describe the API. View the documentation or visualize it live at https://studio.asyncapi.com/ and paste the contents of api.yml into the editor. Further references https://www.asyncapi.com/blog/websocket-part1 https://www.asyncapi.com/blog/websocket-part2 https://www.infoq.com/presentations/event-driven-asyncapi/