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Bitmex vs OpenSea

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

APIBitmexDEAD0OpenSeaDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — key may be requiredFree tier — API key required
Rate limit300 req/window · 299 remaining · resets 1783520161Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Bitmex vs OpenSea: common questions

Which is more reliable, Bitmex or OpenSea?

Both are neck-and-neck — Bitmex 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 Bitmex and OpenSea need an API key?

Both ask you to authenticate — Bitmex uses an API key and OpenSea 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 Bitmex and OpenSea from the browser?

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

Are Bitmex and OpenSea free for commercial use?

Bitmex 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.