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Launch Library 2 vs Noctua

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

APILaunch Library 2NEW—NoctuaNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — no key (The Space Devs LL2)Free — limits not published
Rate limitAnonymous requests are throttled to a low rate (see docs)Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Launch Library 2 vs Noctua: common questions

Which is more reliable, Launch Library 2 or Noctua?

On our scheduled checks, Noctua leads on measured uptime — Launch Library 2 at —% versus Noctua 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 Launch Library 2 and Noctua need an API key?

Neither needs a paid key — Launch Library 2 is callable with no signup, and Noctua is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Launch Library 2 and Noctua from the browser?

Only Launch Library 2 is browser-friendly — it returns CORS headers over HTTPS. Noctua needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Launch Library 2 and Noctua free for commercial use?

Launch Library 2 has unclear commercial terms, and Noctua 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.