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CIRCL CVE Search vs HasData: Structured Web Data APIs

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

APICIRCL CVE SearchNEW—HasData: Structured Web Data APIsNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIRCL CVE Search vs HasData: Structured Web Data APIs: common questions

Which is more reliable, CIRCL CVE Search or HasData: Structured Web Data APIs?

On our scheduled checks, HasData: Structured Web Data APIs leads on measured uptime — CIRCL CVE Search at —% versus HasData: Structured Web Data APIs 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 HasData: Structured Web Data APIs need an API key?

Both ask you to authenticate — CIRCL CVE Search uses an API key and HasData: Structured Web Data APIs uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call CIRCL CVE Search and HasData: Structured Web Data APIs from the browser?

Yes — both CIRCL CVE Search and HasData: Structured Web Data APIs 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 HasData: Structured Web Data APIs free for commercial use?

CIRCL CVE Search has unclear commercial terms, and HasData: Structured Web Data APIs 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.