shipapis
StarSubmit an APISubmit API

Frankfurter vs RBA Exchange Rates API

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

APIFrankfurterHEALTHY—RBA Exchange Rates APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic data (ECB reference rates)Unverified
Free tierUnlimited — abuse-rate-limited onlyFree tier — API key required
Rate limitUnpublished, generousUnpublished
In directory since2026-05-022026-07-05
operationalpartialdownno data

Frankfurter vs RBA Exchange Rates API: common questions

Which is more reliable, Frankfurter or RBA Exchange Rates API?

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

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

Can I call Frankfurter and RBA Exchange Rates API from the browser?

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

Frankfurter allows commercial use on its free tier, and RBA 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.