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Deck of Cards vs LotteryData.io

Same instrument, two spec sheets — measured, not claimed.

APIDeck of CardsNEW—LotteryData.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Deck of Cards vs LotteryData.io: common questions

Which is more reliable, Deck of Cards or LotteryData.io?

On our scheduled checks, LotteryData.io leads on measured uptime — Deck of Cards at —% versus LotteryData.io 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 LotteryData.io need an API key?

Deck of Cards needs no key, while LotteryData.io 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 LotteryData.io from the browser?

Only Deck of Cards is browser-friendly — it returns CORS headers over HTTPS. LotteryData.io needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Deck of Cards and LotteryData.io free for commercial use?

Deck of Cards has unclear commercial terms, and LotteryData.io 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.