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Lookup.im API vs Quandl

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

APILookup.im APINEW—QuandlNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Lookup.im API vs Quandl: common questions

Which is more reliable, Lookup.im API or Quandl?

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

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

Can I call Lookup.im API and Quandl from the browser?

Neither sends browser-friendly CORS headers reliably, so call Lookup.im API and Quandl from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Lookup.im API and Quandl free for commercial use?

Lookup.im API has unclear commercial terms, and Quandl 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.