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Adyen Checkout API vs Banking API

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

APIAdyen Checkout APINEW—Banking APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Adyen Checkout API vs Banking API: common questions

Which is more reliable, Adyen Checkout API or Banking API?

On our scheduled checks, Banking API leads on measured uptime — Adyen Checkout API at —% versus Banking API 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 Banking API need an API key?

Both ask you to authenticate — Adyen Checkout API uses an API key and Banking API 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 Banking API from the browser?

Neither sends browser-friendly CORS headers reliably, so call Adyen Checkout API and Banking API from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Adyen Checkout API and Banking API free for commercial use?

Adyen Checkout API has unclear commercial terms, and Banking API 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.