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Data.parliament.uk API vs Wikidata

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

APIData.parliament.uk APIHEALTHY84WikidataHEALTHY90
Uptime · 30d
Uptime · 90d92.2%100%
Uptime · 30d91.7%100%
P50 · ms678585
P95 · ms41643283
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Data.parliament.uk API vs Wikidata: common questions

Which is more reliable, Data.parliament.uk API or Wikidata?

On our scheduled checks, Wikidata leads on measured uptime — Data.parliament.uk API at 92.2% versus Wikidata at 100% 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 Wikidata?

Wikidata has the lower median latency in our checks — Data.parliament.uk API responds in 678 ms versus Wikidata at 585 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 Wikidata need an API key?

Wikidata needs no key, while Data.parliament.uk API requires a free API key. If you want to start calling without signup, reach for Wikidata first.

Can I call Data.parliament.uk API and Wikidata from the browser?

Only Data.parliament.uk API is browser-friendly — it returns CORS headers over HTTPS. Wikidata needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Data.parliament.uk API and Wikidata free for commercial use?

Data.parliament.uk API has unclear commercial terms, and Wikidata 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.