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LotteryData.io vs xkcd

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

APILotteryData.ioNEW—xkcdNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearno
Data licenseUnverifiedCC BY-NC 2.5
Free tierFree tier — API key requiredFree, no API key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

LotteryData.io vs xkcd: common questions

Which is more reliable, LotteryData.io or xkcd?

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

xkcd needs no key, while LotteryData.io requires a free API key. If you want to start calling without signup, reach for xkcd first.

Can I call LotteryData.io and xkcd from the browser?

Neither sends browser-friendly CORS headers reliably, so call LotteryData.io and xkcd from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are LotteryData.io and xkcd free for commercial use?

LotteryData.io has unclear commercial terms, and xkcd is personal/non-commercial only. 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.