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MCU Countdown vs Sirv

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

APIMCU CountdownNEW—SirvNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (movie data from TMDB)Unverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MCU Countdown vs Sirv: common questions

Which is more reliable, MCU Countdown or Sirv?

On our scheduled checks, Sirv leads on measured uptime — MCU Countdown at —% versus Sirv 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 MCU Countdown and Sirv need an API key?

MCU Countdown needs no key, while Sirv requires a free API key. If you want to start calling without signup, reach for MCU Countdown first.

Can I call MCU Countdown and Sirv from the browser?

Yes — both MCU Countdown and Sirv 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 MCU Countdown and Sirv free for commercial use?

MCU Countdown has unclear commercial terms, and Sirv 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.