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HasData: Structured Web Data APIs vs Web of Science API Expanded

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

APIHasData: Structured Web Data APIsNEW—Web of Science API ExpandedNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

HasData: Structured Web Data APIs vs Web of Science API Expanded: common questions

Which is more reliable, HasData: Structured Web Data APIs or Web of Science API Expanded?

On our scheduled checks, Web of Science API Expanded leads on measured uptime — HasData: Structured Web Data APIs at —% versus Web of Science API Expanded 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 Web of Science API Expanded need an API key?

Both ask you to authenticate — HasData: Structured Web Data APIs uses an API key and Web of Science API Expanded uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call HasData: Structured Web Data APIs and Web of Science API Expanded from the browser?

Only HasData: Structured Web Data APIs is browser-friendly — it returns CORS headers over HTTPS. Web of Science API Expanded needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are HasData: Structured Web Data APIs and Web of Science API Expanded free for commercial use?

HasData: Structured Web Data APIs has unclear commercial terms, and Web of Science API Expanded 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.