Deck of Cards vs Game Brain
Same instrument, two spec sheets — measured, not claimed.
Deck of Cards vs Game Brain: common questions
Which is more reliable, Deck of Cards or Game Brain?
On our scheduled checks, Game Brain leads on measured uptime — Deck of Cards at —% versus Game Brain at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do Deck of Cards and Game Brain need an API key?
Deck of Cards needs no key, while Game Brain requires a free API key. If you want to start calling without signup, reach for Deck of Cards first.
Can I call Deck of Cards and Game Brain from the browser?
Yes — both Deck of Cards and Game Brain send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Deck of Cards and Game Brain free for commercial use?
Deck of Cards has unclear commercial terms, and Game Brain has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.