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ExchangeRate-API (open) vs FinFeedAPI

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

APIExchangeRate-API (open)HEALTHY98FinFeedAPIDEAD0
Uptime · 30d
Uptime · 90d100%0.0%
Uptime · 30d100%0.0%
P50 · ms221—
P95 · ms1091—
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

ExchangeRate-API (open) vs FinFeedAPI: common questions

Which is more reliable, ExchangeRate-API (open) or FinFeedAPI?

On our scheduled checks, ExchangeRate-API (open) leads on measured uptime — ExchangeRate-API (open) 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 ExchangeRate-API (open) and FinFeedAPI need an API key?

ExchangeRate-API (open) needs no key, while FinFeedAPI requires a free API key. If you want to start calling without signup, reach for ExchangeRate-API (open) first.

Can I call ExchangeRate-API (open) and FinFeedAPI from the browser?

Yes — both ExchangeRate-API (open) 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 ExchangeRate-API (open) and FinFeedAPI free for commercial use?

ExchangeRate-API (open) 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.