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Registrum API vs Web of Science API Expanded

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

APIRegistrum APIHEALTHY96Web of Science API ExpandedHEALTHY88
Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms246787
P95 · ms15531985
AuthapiKeyapiKey
CORSnono
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

Registrum API vs Web of Science API Expanded: common questions

Which is more reliable, Registrum API or Web of Science API Expanded?

On our scheduled checks, Registrum API leads on measured uptime — Registrum API at 100% versus Web of Science API Expanded at 99.02% 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, Registrum API or Web of Science API Expanded?

Registrum API has the lower median latency in our checks — Registrum API responds in 246 ms versus Web of Science API Expanded at 787 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 Registrum API and Web of Science API Expanded need an API key?

Both ask you to authenticate — Registrum API 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 Registrum API and Web of Science API Expanded from the browser?

Neither sends browser-friendly CORS headers reliably, so call Registrum API and Web of Science API Expanded from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Registrum API and Web of Science API Expanded free for commercial use?

Registrum API 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.