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Bitmex vs Mempool

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

APIBitmexNEW—MempoolNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (open-source project)
Free tierFree tier — key may be requiredFree public API; no key for basic usage
Rate limit300 req/window · 299 remaining · resets 1783520161Enforced — HTTP 429 on excess, repeated abuse may be banned; numeric limits unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Bitmex vs Mempool: common questions

Which is more reliable, Bitmex or Mempool?

On our scheduled checks, Mempool leads on measured uptime — Bitmex at —% versus Mempool 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 Bitmex and Mempool need an API key?

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

Can I call Bitmex and Mempool from the browser?

Only Mempool 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 Mempool free for commercial use?

Bitmex has unclear commercial terms, and Mempool 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.