shipapis
StarSubmit an APISubmit API

SLA Uptime Calculator vs Vector Express v2.0

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

APISLA Uptime CalculatorNEW—Vector Express v2.0NEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree
Rate limitUnpublished5 req/window · 4 remaining · resets 1783513379
In directory since2026-07-052026-07-05
operationalpartialdownno data

SLA Uptime Calculator vs Vector Express v2.0: common questions

Which is more reliable, SLA Uptime Calculator or Vector Express v2.0?

On our scheduled checks, Vector Express v2.0 leads on measured uptime — SLA Uptime Calculator at —% versus Vector Express v2.0 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 SLA Uptime Calculator and Vector Express v2.0 need an API key?

Neither needs a paid key — SLA Uptime Calculator is callable with no signup, and Vector Express v2.0 is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call SLA Uptime Calculator and Vector Express v2.0 from the browser?

Only SLA Uptime Calculator is browser-friendly — it returns CORS headers over HTTPS. Vector Express v2.0 needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are SLA Uptime Calculator and Vector Express v2.0 free for commercial use?

SLA Uptime Calculator has unclear commercial terms, and Vector Express v2.0 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.