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Mempool vs Coinlore

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

APIMempoolNEW—CoinloreNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (open-source project)Unverified
Free tierFree public API; no key for basic usageFree, no key
Rate limitEnforced — HTTP 429 on excess, repeated abuse may be banned; numeric limits unpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Mempool vs Coinlore: common questions

Which is more reliable, Mempool or Coinlore?

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

Neither needs a paid key — Mempool is callable with no signup, and Coinlore is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Mempool and Coinlore from the browser?

Yes — both Mempool and Coinlore send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Mempool and Coinlore free for commercial use?

Mempool has unclear commercial terms, and Coinlore 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.