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HasData: Structured Web Data APIs vs Open VSX Registry API

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

APIHasData: Structured Web Data APIsNEW—Open VSX Registry APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublished10800 req/window · 10799 remaining
In directory since2026-07-052026-07-05
operationalpartialdownno data

HasData: Structured Web Data APIs vs Open VSX Registry API: common questions

Which is more reliable, HasData: Structured Web Data APIs or Open VSX Registry API?

On our scheduled checks, Open VSX Registry API leads on measured uptime — HasData: Structured Web Data APIs at —% versus Open VSX Registry API 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 HasData: Structured Web Data APIs and Open VSX Registry API need an API key?

Open VSX Registry API needs no key, while HasData: Structured Web Data APIs requires a free API key. If you want to start calling without signup, reach for Open VSX Registry API first.

Can I call HasData: Structured Web Data APIs and Open VSX Registry API from the browser?

Yes — both HasData: Structured Web Data APIs and Open VSX Registry API send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are HasData: Structured Web Data APIs and Open VSX Registry API free for commercial use?

HasData: Structured Web Data APIs 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.