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Exchangerate.host vs Financial Data

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

APIExchangerate.hostNEW—Financial DataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Exchangerate.host vs Financial Data: common questions

Which is more reliable, Exchangerate.host or Financial Data?

On our scheduled checks, Financial Data leads on measured uptime — Exchangerate.host at —% versus Financial Data 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 Exchangerate.host and Financial Data need an API key?

Exchangerate.host needs no key, while Financial Data requires a free API key. If you want to start calling without signup, reach for Exchangerate.host first.

Can I call Exchangerate.host and Financial Data from the browser?

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

Are Exchangerate.host and Financial Data free for commercial use?

Exchangerate.host has unclear commercial terms, and Financial Data 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.