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Exchange Rates API vs IBAN Validation API

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

APIExchange Rates APINEW—IBAN Validation APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
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

Exchange Rates API vs IBAN Validation API: common questions

Which is more reliable, Exchange Rates API or IBAN Validation API?

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

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

Can I call Exchange Rates API and IBAN Validation API from the browser?

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

Are Exchange Rates API and IBAN Validation API free for commercial use?

Exchange Rates API has unclear commercial terms, and IBAN Validation 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.