When using the API Sandbox, there is an "Examples" button. When clicking on it, it opens a pop-in with a series of links, like there: https://www.wikidata.org/wiki/Special:ApiSandbox#action=wbgetclaims&entity=Q42

However, the pop-in is too small to actually see the examples:

(Firefox 50, Ubuntu 16.04 LTS, both using the French translation.)