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Spaceflight News vs Urlbox API

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

APISpaceflight NewsNEW—Urlbox APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (links/metadata for third-party news)Unverified
Free tierFree — no keyFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Spaceflight News vs Urlbox API: common questions

Which is more reliable, Spaceflight News or Urlbox API?

On our scheduled checks, Urlbox API leads on measured uptime — Spaceflight News at —% versus Urlbox API 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 Spaceflight News and Urlbox API need an API key?

Spaceflight News needs no key, while Urlbox API requires a free API key. If you want to start calling without signup, reach for Spaceflight News first.

Can I call Spaceflight News and Urlbox API from the browser?

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

Are Spaceflight News and Urlbox API free for commercial use?

Spaceflight News has unclear commercial terms, and Urlbox 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.