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SnapshotAPI vs Web of Science API Expanded

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

APISnapshotAPIDEAD0Web of Science API ExpandedHEALTHY88
Uptime · 30d
Uptime · 90d6.9%99.02%
Uptime · 30d0.0%98.3%
P50 · ms396787
P95 · ms5471985
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

SnapshotAPI vs Web of Science API Expanded: common questions

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

On our scheduled checks, Web of Science API Expanded leads on measured uptime — SnapshotAPI at 6.9% 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, SnapshotAPI or Web of Science API Expanded?

SnapshotAPI has the lower median latency in our checks — SnapshotAPI responds in 396 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 SnapshotAPI and Web of Science API Expanded need an API key?

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

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

SnapshotAPI 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.