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CompanyData.com vs Exchange Rates API

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

APICompanyData.comNEW—Exchange Rates APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CompanyData.com vs Exchange Rates API: common questions

Which is more reliable, CompanyData.com or Exchange Rates API?

On our scheduled checks, Exchange Rates API leads on measured uptime — CompanyData.com at —% versus Exchange Rates 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 CompanyData.com and Exchange Rates API need an API key?

Neither needs a paid key — CompanyData.com is callable with no signup, and Exchange Rates API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CompanyData.com and Exchange Rates API from the browser?

Neither sends browser-friendly CORS headers reliably, so call CompanyData.com and Exchange Rates API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are CompanyData.com and Exchange Rates API free for commercial use?

CompanyData.com has unclear commercial terms, and Exchange Rates 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.