you can link to any wikipedia page by an id
https://en.wikipedia.org/?curid=23251407
random number in this range seems ok:
232562
https://en.wikipedia.org/?curid=232962
get random stuff (doesn't only return articles):
https://en.wikipedia.org/w/api.php?action=query&list=random&rnlimit=5
one random article (CHAR LIMIT exchars=500):
https://en.wikipedia.org/w/api.php?action=query&generator=random&grnnamespace=0&prop=extracts&exchars=500&format=json
specify an article type (otherwise you get all kinds of non-article things like templates and talks) THE ORDER OF THIS SEEMS TO MATTER
&grnnamespace=0
https://en.wikipedia.org/w/api.php?action=query&generator=random&grnnamespace=1&prop=extracts&format=json
search for articles by a word (here the word is: meaning):
https://en.wikipedia.org/wiki/Special:ApiSandbox#action=query&format=json&list=search%7Calllinks&iwurl=1&srsearch=meaning
/w/api.php?action=query&format=json&list=search%7Calllinks&iwurl=1&srsearch=meaning
Request json: { "action": "query", "format": "json", "list": "search|alllinks", "iwurl": 1, "srsearch": "meaning" }
Adding origin=* fixes CORs errors for requests from localhost for this API.