Mempool vs Sharpe

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

Uptime · 30d
Uptime · 90d86.3%98.0%
Uptime · 30d90.0%96.7%
P50 · ms1001239
P95 · ms22583358
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverified (open-source project)Unverified
Free tierFree public API; no key for basic usageFree — limits not published
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 Sharpe: common questions

Which is more reliable, Mempool or Sharpe?

On our scheduled checks, Sharpe leads on measured uptime — Mempool at 86.3% versus Sharpe at 98.0% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, Mempool or Sharpe?

Mempool has the lower median latency in our checks — Mempool responds in 100 ms versus Sharpe at 1239 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Mempool and Sharpe need an API key?

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

Can I call Mempool and Sharpe from the browser?

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

Mempool has unclear commercial terms, and Sharpe 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.