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OpenHolidays API vs Telegram Bot

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

APIOpenHolidays APINEW—Telegram BotNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
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

OpenHolidays API vs Telegram Bot: common questions

Which is more reliable, OpenHolidays API or Telegram Bot?

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

OpenHolidays API needs no key, while Telegram Bot requires a free API key. If you want to start calling without signup, reach for OpenHolidays API first.

Can I call OpenHolidays API and Telegram Bot from the browser?

Yes — both OpenHolidays API and Telegram Bot 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 Telegram Bot free for commercial use?

OpenHolidays API has unclear commercial terms, and Telegram Bot 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.