IPASIS vs REST Countries
Same instrument, two spec sheets — measured, not claimed.
IPASIS vs REST Countries: common questions
Which is more reliable, IPASIS or REST Countries?
On our scheduled checks, REST Countries leads on measured uptime — IPASIS at 0.0% 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.
Do IPASIS and REST Countries need an API key?
REST Countries needs no key, while IPASIS requires a free API key. If you want to start calling without signup, reach for REST Countries first.
Can I call IPASIS and REST Countries from the browser?
Neither sends browser-friendly CORS headers reliably, so call IPASIS and REST Countries from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are IPASIS and REST Countries free for commercial use?
IPASIS 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.