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Keen IO vs Satellite Passes

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

APIKeen IONEW—Satellite PassesNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Keen IO vs Satellite Passes: common questions

Which is more reliable, Keen IO or Satellite Passes?

On our scheduled checks, Satellite Passes leads on measured uptime — Keen IO at —% versus Satellite Passes 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 Keen IO and Satellite Passes need an API key?

Satellite Passes needs no key, while Keen IO requires a free API key. If you want to start calling without signup, reach for Satellite Passes first.

Can I call Keen IO and Satellite Passes from the browser?

Only Satellite Passes is browser-friendly — it returns CORS headers over HTTPS. Keen IO needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Keen IO and Satellite Passes free for commercial use?

Keen IO has unclear commercial terms, and Satellite Passes 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.