Feature summary:
The Wikibase REST API swagger docs at https://doc.wikimedia.org/Wikibase/master/js/rest-api/ have a try out feature. There is a server selection that currently only allows selecting wikibase.example as a server. We should add beta Wikidata and Wikidata as additional options. Wikidata because it is the largest consumer of the Wikibase REST API and is expected to stay that for a long time and beta Wikidata because it is a good playground.
Benefits:
It'll be easier to see the actual actions on a live Wikibase instance right from the documentation. This will make it easier to understand the API and make it easier to get started developing with the API.