BuyWhere vs Open VSX Registry API

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

Uptime · 30d
Uptime · 90d99.02%100%
Uptime · 30d100%100%
P50 · ms440245
P95 · ms1901693
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree — limits not published
Rate limitUnpublished10800 req/window · 10799 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

BuyWhere vs Open VSX Registry API: common questions

Which is more reliable, BuyWhere or Open VSX Registry API?

On our scheduled checks, Open VSX Registry API leads on measured uptime — BuyWhere at 99.02% versus Open VSX Registry API 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, BuyWhere or Open VSX Registry API?

Open VSX Registry API has the lower median latency in our checks — BuyWhere responds in 440 ms versus Open VSX Registry API at 245 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 BuyWhere and Open VSX Registry API need an API key?

Open VSX Registry API needs no key, while BuyWhere requires a free API key. If you want to start calling without signup, reach for Open VSX Registry API first.

Can I call BuyWhere and Open VSX Registry API from the browser?

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

Are BuyWhere and Open VSX Registry API free for commercial use?

BuyWhere has unclear commercial terms, and Open VSX Registry API 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.