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Frankfurter vs CoinDesk BPI

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

APIFrankfurterHEALTHY—CoinDesk BPIDEAD0
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesno
Data licensePublic data (ECB reference rates)Proprietary
Free tierUnlimited — abuse-rate-limited onlyWas: unlimited
Rate limitUnpublished, generous—
In directory since2026-05-022026-05-02
operationalpartialdownno data

Frankfurter vs CoinDesk BPI: common questions

Which is more reliable, Frankfurter or CoinDesk BPI?

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

Neither needs a paid key — Frankfurter is callable with no signup, and CoinDesk BPI is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Frankfurter and CoinDesk BPI from the browser?

Yes — both Frankfurter and CoinDesk BPI 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 CoinDesk BPI free for commercial use?

Frankfurter allows commercial use on its free tier, and CoinDesk BPI is personal/non-commercial only. 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.