AnimeNewsNetwork vs Kitsu

ANN's Encyclopedia API serves anime, manga, person, and company records as XML from cdn.animenewsnetwork.com/encyclopedia/api.xml, confirmed live with a real title lookup carrying Access-Control-Allow-Origin: *; the www.animenewsnetwork.com/encyclopedia/api.php page most integrations bookmark is actually the human-readable documentation front end rather than the data endpoint itself. It's free to use with attribution, capped at one request per second per IP.

Kitsu's JSON:API-flavored REST endpoint at kitsu.io/api/edge was confirmed live with an unauthenticated anime listing and an explicit Access-Control-Allow-Origin: * header. Reading the catalog needs no account at all; OAuth is only required for actions tied to a user's own library, and the API itself carries no paid tier.