Data.parliament.uk API vs REST Countries
Same instrument, two spec sheets — measured, not claimed.
Data.parliament.uk API vs REST Countries: common questions
Which is more reliable, Data.parliament.uk API or REST Countries?
On our scheduled checks, REST Countries leads on measured uptime — Data.parliament.uk API at 93.9% versus REST Countries 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 REST Countries?
REST Countries has the lower median latency in our checks — Data.parliament.uk API responds in 534 ms versus REST Countries at 274 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 REST Countries need an API key?
REST Countries needs no key, while Data.parliament.uk API requires a free API key. If you want to start calling without signup, reach for REST Countries first.
Can I call Data.parliament.uk API and REST Countries from the browser?
Yes — both Data.parliament.uk API and REST Countries 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 REST Countries free for commercial use?
Data.parliament.uk API has unclear commercial terms, and REST Countries 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.