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MarketAux vs Zenodo

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

APIMarketAuxDEAD0ZenodoHEALTHY59
Uptime · 30d
Uptime · 90d0.0%99.02%
Uptime · 30d0.0%100%
P50 · ms—1698
P95 · ms—4935
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — token requiredFree — limits not published
Rate limit100 requests/day on free plan30 req/window · 29 remaining · resets 1783516620
In directory since2026-07-052026-07-05
operationalpartialdownno data

MarketAux vs Zenodo: common questions

Which is more reliable, MarketAux or Zenodo?

On our scheduled checks, Zenodo leads on measured uptime — MarketAux at 0.0% versus Zenodo at 99.02% 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 Zenodo need an API key?

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

Can I call MarketAux and Zenodo from the browser?

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

Are MarketAux and Zenodo free for commercial use?

MarketAux has unclear commercial terms, and Zenodo 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.