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Data.parliament.uk API vs IPASIS

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

APIData.parliament.uk APINEW—IPASISNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
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 IPASIS: common questions

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

On our scheduled checks, IPASIS leads on measured uptime — Data.parliament.uk API at —% versus IPASIS at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Data.parliament.uk API and IPASIS need an API key?

Both ask you to authenticate — Data.parliament.uk API uses an API key and IPASIS 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 IPASIS from the browser?

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

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

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