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CIRCL CVE Search vs Microlink.io

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

APICIRCL CVE SearchNEW—Microlink.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedN/A — returns metadata extracted from the URL you pass
Free tierFree tier — API key requiredFree tier — no key required (Pro plans need a key)
Rate limitUnpublishedFree tier is rate-limited per day (see pricing)
In directory since2026-07-052026-07-05
operationalpartialdownno data

CIRCL CVE Search vs Microlink.io: common questions

Which is more reliable, CIRCL CVE Search or Microlink.io?

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

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

Can I call CIRCL CVE Search and Microlink.io from the browser?

Yes — both CIRCL CVE Search and Microlink.io 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 Microlink.io free for commercial use?

CIRCL CVE Search has unclear commercial terms, and Microlink.io 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.