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CoinRanking vs Mempool

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

APICoinRankingNEW—MempoolNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified (open-source project)
Free tierFree tier — API key may be required for productionFree public API; no key for basic usage
Rate limit5 req/window · 4 remaining · resets 24Enforced — HTTP 429 on excess, repeated abuse may be banned; numeric limits unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

CoinRanking vs Mempool: common questions

Which is more reliable, CoinRanking or Mempool?

On our scheduled checks, Mempool leads on measured uptime — CoinRanking 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 CoinRanking and Mempool need an API key?

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

Can I call CoinRanking and Mempool from the browser?

Yes — both CoinRanking and Mempool 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 CoinRanking and Mempool free for commercial use?

CoinRanking 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.