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OpenHolidays API vs Disify

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

APIOpenHolidays APINEW—DisifyNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenHolidays API vs Disify: common questions

Which is more reliable, OpenHolidays API or Disify?

On our scheduled checks, Disify leads on measured uptime — OpenHolidays API at —% versus Disify 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 OpenHolidays API and Disify need an API key?

Neither needs a paid key — OpenHolidays API is callable with no signup, and Disify is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call OpenHolidays API and Disify from the browser?

Yes — both OpenHolidays API and Disify 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 OpenHolidays API and Disify free for commercial use?

OpenHolidays API has unclear commercial terms, and Disify 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.