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Frankfurter vs Mboum API

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

APIFrankfurterHEALTHY—Mboum 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 Mboum API: common questions

Which is more reliable, Frankfurter or Mboum API?

On our scheduled checks, Mboum API leads on measured uptime — Frankfurter at —% versus Mboum 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 Mboum API need an API key?

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

Can I call Frankfurter and Mboum API from the browser?

Yes — both Frankfurter and Mboum 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 Mboum API free for commercial use?

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