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caldays vs Telegram Bot

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

APIcaldaysNEW—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

caldays vs Telegram Bot: common questions

Which is more reliable, caldays or Telegram Bot?

On our scheduled checks, Telegram Bot leads on measured uptime — caldays 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 caldays and Telegram Bot need an API key?

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

Can I call caldays and Telegram Bot from the browser?

Yes — both caldays 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 caldays and Telegram Bot free for commercial use?

caldays 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.