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Frankfurter vs CoinGecko

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

APIFrankfurterHEALTHY—CoinGeckoDEGRADED—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licensePublic data (ECB reference rates)Proprietary — attribution required
Free tierUnlimited — abuse-rate-limited only10k calls/mo demo key, no card
Rate limitUnpublished, generous~30/min, tightens under load
In directory since2026-05-022026-05-02
operationalpartialdownno data

Frankfurter vs CoinGecko: common questions

Which is more reliable, Frankfurter or CoinGecko?

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

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

Can I call Frankfurter and CoinGecko from the browser?

Only Frankfurter is browser-friendly — it returns CORS headers over HTTPS. CoinGecko needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Frankfurter and CoinGecko free for commercial use?

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