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Micro User Service vs Web of Science API Expanded

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

APIMicro User ServiceDEAD0Web of Science API ExpandedHEALTHY88
Uptime · 30d
Uptime · 90d18.6%99.02%
Uptime · 30d0.0%98.3%
P50 · ms231787
P95 · ms8271985
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Micro User Service vs Web of Science API Expanded: common questions

Which is more reliable, Micro User Service or Web of Science API Expanded?

On our scheduled checks, Web of Science API Expanded leads on measured uptime — Micro User Service at 18.6% 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, Micro User Service or Web of Science API Expanded?

Micro User Service has the lower median latency in our checks — Micro User Service responds in 231 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 Micro User Service and Web of Science API Expanded need an API key?

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

Neither sends browser-friendly CORS headers reliably, so call Micro User Service 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 Micro User Service and Web of Science API Expanded free for commercial use?

Micro User Service 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.