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Authentication vs VulDB

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

APIAuthenticationNEW—VulDBNEW—
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 — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Authentication vs VulDB: common questions

Which is more reliable, Authentication or VulDB?

On our scheduled checks, VulDB leads on measured uptime — Authentication at —% versus VulDB 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 Authentication and VulDB need an API key?

Authentication needs no key, while VulDB requires a free API key. If you want to start calling without signup, reach for Authentication first.

Can I call Authentication and VulDB from the browser?

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

Are Authentication and VulDB free for commercial use?

Authentication has unclear commercial terms, and VulDB 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.