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Acoustid API vs Shodan EntityDB API

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

APIAcoustid APINEW—Shodan EntityDB APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key may be required for productionFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Acoustid API vs Shodan EntityDB API: common questions

Which is more reliable, Acoustid API or Shodan EntityDB API?

On our scheduled checks, Shodan EntityDB API leads on measured uptime — Acoustid API at —% versus Shodan EntityDB API 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 Acoustid API and Shodan EntityDB API need an API key?

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

Can I call Acoustid API and Shodan EntityDB API from the browser?

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

Are Acoustid API and Shodan EntityDB API free for commercial use?

Acoustid API has unclear commercial terms, and Shodan EntityDB API 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.