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Quandl vs SnapshotAPI

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

APIQuandlNEW—SnapshotAPINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSnoyes
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

Quandl vs SnapshotAPI: common questions

Which is more reliable, Quandl or SnapshotAPI?

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

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

Can I call Quandl and SnapshotAPI from the browser?

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

Are Quandl and SnapshotAPI free for commercial use?

Quandl has unclear commercial terms, and SnapshotAPI 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.