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CIRCL CVE Search vs Free Public APIs API

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

APICIRCL CVE SearchNEW—Free Public APIs APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIRCL CVE Search vs Free Public APIs API: common questions

Which is more reliable, CIRCL CVE Search or Free Public APIs API?

On our scheduled checks, Free Public APIs API leads on measured uptime — CIRCL CVE Search at —% versus Free Public APIs 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 CIRCL CVE Search and Free Public APIs API need an API key?

Free Public APIs API needs no key, while CIRCL CVE Search requires a free API key. If you want to start calling without signup, reach for Free Public APIs API first.

Can I call CIRCL CVE Search and Free Public APIs API from the browser?

Yes — both CIRCL CVE Search and Free Public APIs 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 CIRCL CVE Search and Free Public APIs API free for commercial use?

CIRCL CVE Search has unclear commercial terms, and Free Public APIs 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.