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Telegram Bot vs The Calendar

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

APITelegram BotDEAD0The CalendarHEALTHY90
Uptime · 30d
Uptime · 90d0.0%100%
Uptime · 30d0.0%100%
P50 · ms—588
P95 · ms—3550
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (US federal list per 5 U.S.C. § 6103)
Free tierFree tier — API key requiredFree, no auth (per site)
Rate limitUnpublishedNone stated (site advertises no rate limit)
In directory since2026-07-052026-07-05
operationalpartialdownno data

Telegram Bot vs The Calendar: common questions

Which is more reliable, Telegram Bot or The Calendar?

On our scheduled checks, The Calendar leads on measured uptime — Telegram Bot at 0.0% versus The Calendar at 100% 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 Telegram Bot and The Calendar need an API key?

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

Can I call Telegram Bot and The Calendar from the browser?

Yes — both Telegram Bot and The Calendar 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 Telegram Bot and The Calendar free for commercial use?

Telegram Bot has unclear commercial terms, and The Calendar 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.