Data.parliament.uk API vs Wikipedia REST

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

Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms
P95 · ms
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearyes
Data licenseUnverifiedCC BY-SA 4.0
Free tierFree tier — API key requiredUnlimited within etiquette
Rate limitUnpublished200/sec global courtesy cap
In directory since2026-07-052026-05-09
operationalpartialdownno data

Data.parliament.uk API vs Wikipedia REST: common questions

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

Only Wikipedia REST is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do Data.parliament.uk API and Wikipedia REST need an API key?

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

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

Yes — both Data.parliament.uk API and Wikipedia REST send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

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

Data.parliament.uk API has unclear commercial terms, and Wikipedia REST allows commercial use on its free tier. 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.