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Free Public APIs API vs Spaceflight News

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

APIFree Public APIs APIHEALTHY88Spaceflight NewsHEALTHY63
Uptime · 30d
Uptime · 90d100%95.1%
Uptime · 30d100%91.7%
P50 · ms878864
P95 · ms24194497
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (links/metadata for third-party news)
Free tierFree — limits not publishedFree — no key
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Free Public APIs API vs Spaceflight News: common questions

Which is more reliable, Free Public APIs API or Spaceflight News?

On our scheduled checks, Free Public APIs API leads on measured uptime — Free Public APIs API at 100% versus Spaceflight News at 95.1% 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, Free Public APIs API or Spaceflight News?

Spaceflight News has the lower median latency in our checks — Free Public APIs API responds in 878 ms versus Spaceflight News at 864 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 Free Public APIs API and Spaceflight News need an API key?

Neither needs a paid key — Free Public APIs API is callable with no signup, and Spaceflight News is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Free Public APIs API and Spaceflight News from the browser?

Yes — both Free Public APIs API and Spaceflight News 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 Free Public APIs API and Spaceflight News free for commercial use?

Free Public APIs API has unclear commercial terms, and Spaceflight News 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.