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Blockchair vs PumpFunData

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

APIBlockchairNEW—PumpFunDataNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Blockchair vs PumpFunData: common questions

Which is more reliable, Blockchair or PumpFunData?

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

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

Can I call Blockchair and PumpFunData from the browser?

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

Are Blockchair and PumpFunData free for commercial use?

Blockchair has unclear commercial terms, and PumpFunData 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.