shipapis
StarSubmit an APISubmit API

Adoptium vs VATlayer

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

APIAdoptiumNEW—VATlayerNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
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

Adoptium vs VATlayer: common questions

Which is more reliable, Adoptium or VATlayer?

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

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

Can I call Adoptium and VATlayer from the browser?

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

Are Adoptium and VATlayer free for commercial use?

Adoptium has unclear commercial terms, and VATlayer 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.