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Data.parliament.uk API vs Web of Science API Expanded

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

APIData.parliament.uk APIHEALTHY84Web of Science API ExpandedHEALTHY88
Uptime · 30d
Uptime · 90d92.2%99.02%
Uptime · 30d91.7%98.3%
P50 · ms678787
P95 · ms41641985
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

Data.parliament.uk API vs Web of Science API Expanded: common questions

Which is more reliable, Data.parliament.uk API or Web of Science API Expanded?

On our scheduled checks, Web of Science API Expanded leads on measured uptime — Data.parliament.uk API at 92.2% 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, Data.parliament.uk API or Web of Science API Expanded?

Data.parliament.uk API has the lower median latency in our checks — Data.parliament.uk API responds in 678 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 Data.parliament.uk API and Web of Science API Expanded need an API key?

Both ask you to authenticate — Data.parliament.uk 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 Data.parliament.uk API and Web of Science API Expanded from the browser?

Only Data.parliament.uk API 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 Data.parliament.uk API and Web of Science API Expanded free for commercial use?

Data.parliament.uk 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.