Adyen Checkout API vs Finage
Same instrument, two spec sheets — measured, not claimed.
Adyen Checkout API vs Finage: common questions
Which is more reliable, Adyen Checkout API or Finage?
On our scheduled checks, Finage leads on measured uptime — Adyen Checkout API at —% versus Finage 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 Adyen Checkout API and Finage need an API key?
Both ask you to authenticate — Adyen Checkout API uses an API key and Finage 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 Adyen Checkout API and Finage from the browser?
Only Finage is browser-friendly — it returns CORS headers over HTTPS. Adyen Checkout API needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are Adyen Checkout API and Finage free for commercial use?
Adyen Checkout API has unclear commercial terms, and Finage 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.