shipapis
StarSubmit an APISubmit API

MCU Countdown vs Nebulum Mars Rovers API

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

APIMCU CountdownHEALTHY91Nebulum Mars Rovers APIDYING89
Uptime · 30d
Uptime · 90d98.9%92.8%
Uptime · 30d96.7%78.3%
P50 · ms389454
P95 · ms44031417
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (movie data from TMDB)Unverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MCU Countdown vs Nebulum Mars Rovers API: common questions

Which is more reliable, MCU Countdown or Nebulum Mars Rovers API?

On our scheduled checks, MCU Countdown leads on measured uptime — MCU Countdown at 98.9% versus Nebulum Mars Rovers API at 92.8% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, MCU Countdown or Nebulum Mars Rovers API?

MCU Countdown has the lower median latency in our checks — MCU Countdown responds in 389 ms versus Nebulum Mars Rovers API at 454 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do MCU Countdown and Nebulum Mars Rovers API need an API key?

Neither needs a paid key — MCU Countdown is callable with no signup, and Nebulum Mars Rovers API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call MCU Countdown and Nebulum Mars Rovers API from the browser?

Only MCU Countdown is browser-friendly — it returns CORS headers over HTTPS. Nebulum Mars Rovers API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are MCU Countdown and Nebulum Mars Rovers API free for commercial use?

MCU Countdown has unclear commercial terms, and Nebulum Mars Rovers API 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.