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Adyen Checkout API vs MetalpriceAPI

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

APIAdyen Checkout APINEW—MetalpriceAPINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnoyes
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 MetalpriceAPI: common questions

Which is more reliable, Adyen Checkout API or MetalpriceAPI?

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

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

Only MetalpriceAPI 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 MetalpriceAPI free for commercial use?

Adyen Checkout API has unclear commercial terms, and MetalpriceAPI 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.