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MarketAux vs Spaceflight News

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

APIMarketAuxNEW—Spaceflight NewsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (links/metadata for third-party news)
Free tierFree tier — token requiredFree — no key
Rate limit100 requests/day on free planUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

MarketAux vs Spaceflight News: common questions

Which is more reliable, MarketAux or Spaceflight News?

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

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

Can I call MarketAux and Spaceflight News from the browser?

Yes — both MarketAux 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 MarketAux and Spaceflight News free for commercial use?

MarketAux 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.