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Authentication vs VulDB

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

APIAuthenticationHEALTHY89VulDBHEALTHY94
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms720360
P95 · ms18011138
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?

Both are neck-and-neck — Authentication and VulDB each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Authentication or VulDB?

VulDB has the lower median latency in our checks — Authentication responds in 720 ms versus VulDB at 360 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

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.