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Coffee vs Covid Tracking Project

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

APICoffeeNEW—Covid Tracking ProjectNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY 4.0
Free tierFree — no API keyFree — no key required (archived dataset)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Coffee vs Covid Tracking Project: common questions

Which is more reliable, Coffee or Covid Tracking Project?

On our scheduled checks, Covid Tracking Project leads on measured uptime — Coffee 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 Coffee and Covid Tracking Project need an API key?

Neither needs a paid key — Coffee 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 Coffee and Covid Tracking Project from the browser?

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

Are Coffee and Covid Tracking Project free for commercial use?

Coffee 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.