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Exchange Rates API vs FinFeedAPI

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

APIExchange Rates APIHEALTHY88FinFeedAPIDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms810—
P95 · ms4162—
AuthnoneapiKey
CORSyesyes
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

Exchange Rates API vs FinFeedAPI: common questions

Which is more reliable, Exchange Rates API or FinFeedAPI?

On our scheduled checks, Exchange Rates API leads on measured uptime — Exchange Rates API at 100% versus FinFeedAPI at 0.0% 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 FinFeedAPI need an API key?

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

Can I call Exchange Rates API and FinFeedAPI from the browser?

Yes — both Exchange Rates API and FinFeedAPI 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 Exchange Rates API and FinFeedAPI free for commercial use?

Exchange Rates API has unclear commercial terms, and FinFeedAPI 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.