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UUID Generator vs Vector Express v2.0

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

APIUUID GeneratorNEW—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 limit60 req/window · 59 remaining5 req/window · 4 remaining · resets 1783513379
In directory since2026-07-052026-07-05
operationalpartialdownno data

UUID Generator vs Vector Express v2.0: common questions

Which is more reliable, UUID Generator or Vector Express v2.0?

On our scheduled checks, Vector Express v2.0 leads on measured uptime — UUID Generator 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 UUID Generator and Vector Express v2.0 need an API key?

Neither needs a paid key — UUID Generator 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 UUID Generator and Vector Express v2.0 from the browser?

Only UUID Generator 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 UUID Generator and Vector Express v2.0 free for commercial use?

UUID Generator 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.