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Data.parliament.uk API vs OkSurf

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

APIData.parliament.uk APIHEALTHY84OkSurfHEALTHY91
Uptime · 30d
Uptime · 90d92.2%100%
Uptime · 30d91.7%100%
P50 · ms678624
P95 · ms41641870
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 OkSurf: common questions

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

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

OkSurf has the lower median latency in our checks — Data.parliament.uk API responds in 678 ms versus OkSurf at 624 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 OkSurf need an API key?

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

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

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

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

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