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Nebulum Mars Rovers API vs Screenshotlayer

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

APINebulum Mars Rovers APIHEALTHY91ScreenshotlayerHEALTHY93
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms688458
P95 · ms13992228
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Nebulum Mars Rovers API vs Screenshotlayer: common questions

Which is more reliable, Nebulum Mars Rovers API or Screenshotlayer?

Both are neck-and-neck — Nebulum Mars Rovers API and Screenshotlayer each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Nebulum Mars Rovers API or Screenshotlayer?

Screenshotlayer has the lower median latency in our checks — Nebulum Mars Rovers API responds in 688 ms versus Screenshotlayer at 458 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 Nebulum Mars Rovers API and Screenshotlayer need an API key?

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

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

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

Are Nebulum Mars Rovers API and Screenshotlayer free for commercial use?

Nebulum Mars Rovers API has unclear commercial terms, and Screenshotlayer 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.