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Diablo III, Hearthstone, StarCraft II and World of Warcraft game data APIs
Board games, RPG and videogames.
Board Game Geek API is a free Games & Comics API that requires no API key, is served over HTTPS and does not support CORS, so it should be called from a server.

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Diablo III, Hearthstone, StarCraft II and World of Warcraft game data APIs
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Yes. The Board Game Geek API is listed in the Games & Comics category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
No. The Board Game Geek API requires no authentication, so you can start making requests without signing up.
Not directly. The Board Game Geek API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The Board Game Geek API is served over HTTPS, so it's safe to use in production.