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CIE-10 API vs F1 API

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

APICIE-10 APINEW—F1 APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limit120 req/window · 119 remaining · resets 1783518425Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIE-10 API vs F1 API: common questions

Which is more reliable, CIE-10 API or F1 API?

On our scheduled checks, F1 API leads on measured uptime — CIE-10 API at —% versus F1 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 CIE-10 API and F1 API need an API key?

Neither needs a paid key — CIE-10 API is callable with no signup, and F1 API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call CIE-10 API and F1 API from the browser?

Yes — both CIE-10 API and F1 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 CIE-10 API and F1 API free for commercial use?

CIE-10 API has unclear commercial terms, and F1 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.