Nobel Prize vs Wikipedia

The official Nobel Prize API serves structured, keyless JSON on every laureate, prize category, and award year back to 1901, including prize amounts (nominal and inflation-adjusted) and links between related records. A live query against api.nobelprize.org/2.1/nobelPrizes needs no key and returns a wildcard Access-Control-Allow-Origin header, so it's directly callable from browser code.

The MediaWiki action API that powers Wikipedia gives keyless access to full-text search, page content/extracts, revision history, and category membership across every language edition. A live probe of en.wikipedia.org/w/api.php confirms open, keyless reads and resolves the CORS story: browsers must append the documented `origin=*` query parameter (a plain Origin header alone is rejected as a "mismatch"), after which the response carries a wildcard Access-Control-Allow-Origin.