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Vector Express v2.0 vs YADG

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

APIVector Express v2.0NEW—YADGNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFreeFree tier — API key required
Rate limit5 req/window · 4 remaining · resets 1783513379Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Vector Express v2.0 vs YADG: common questions

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

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

Vector Express v2.0 needs no key, while YADG requires a free API key. If you want to start calling without signup, reach for Vector Express v2.0 first.

Can I call Vector Express v2.0 and YADG from the browser?

Neither sends browser-friendly CORS headers reliably, so call Vector Express v2.0 and YADG from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Vector Express v2.0 and YADG free for commercial use?

Vector Express v2.0 has unclear commercial terms, and YADG 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.