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CIE-10 API vs Covid Tracking Project

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

APICIE-10 APINEW—Covid Tracking ProjectNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0
Free tierFree — limits not publishedFree — no key required (archived dataset)
Rate limit120 req/window · 119 remaining · resets 1783518425Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIE-10 API vs Covid Tracking Project: common questions

Which is more reliable, CIE-10 API or Covid Tracking Project?

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

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

Can I call CIE-10 API and Covid Tracking Project from the browser?

Yes — both CIE-10 API and Covid Tracking Project 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 Covid Tracking Project free for commercial use?

CIE-10 API has unclear commercial terms, and Covid Tracking Project allows commercial use on its free tier. 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.