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