No-as-a-Service vs VATlayer

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

Uptime · 30d
Uptime · 90d98.0%100%
Uptime · 30d98.3%100%
P50 · ms547473
P95 · ms17712118
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

No-as-a-Service vs VATlayer: common questions

Which is more reliable, No-as-a-Service or VATlayer?

On our scheduled checks, VATlayer leads on measured uptime — No-as-a-Service at 98.0% versus VATlayer at 100% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, No-as-a-Service or VATlayer?

VATlayer has the lower median latency in our checks — No-as-a-Service responds in 547 ms versus VATlayer at 473 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 No-as-a-Service and VATlayer need an API key?

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

Can I call No-as-a-Service and VATlayer from the browser?

Only No-as-a-Service 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 No-as-a-Service and VATlayer free for commercial use?

No-as-a-Service 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.