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CheapShark API vs CIRCL CVE Search

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

APICheapShark APINEW—CIRCL CVE SearchNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CheapShark API vs CIRCL CVE Search: common questions

Which is more reliable, CheapShark API or CIRCL CVE Search?

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

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

Can I call CheapShark API and CIRCL CVE Search from the browser?

Only CIRCL CVE Search is browser-friendly — it returns CORS headers over HTTPS. CheapShark API needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are CheapShark API and CIRCL CVE Search free for commercial use?

CheapShark API has unclear commercial terms, and CIRCL CVE Search 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.