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Binance vs OpenSea

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

APIBinanceDEAD0OpenSeaDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Binance vs OpenSea: common questions

Which is more reliable, Binance or OpenSea?

Both are neck-and-neck — Binance and OpenSea each measure 0.0% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Do Binance and OpenSea need an API key?

Binance needs no key, while OpenSea requires a free API key. If you want to start calling without signup, reach for Binance first.

Can I call Binance and OpenSea from the browser?

Only OpenSea is browser-friendly — it returns CORS headers over HTTPS. Binance needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Binance and OpenSea free for commercial use?

Binance has unclear commercial terms, and OpenSea 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.