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serpstack vs Shodan EntityDB API

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

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

serpstack vs Shodan EntityDB API: common questions

Which is more reliable, serpstack or Shodan EntityDB API?

On our scheduled checks, Shodan EntityDB API leads on measured uptime — serpstack 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 serpstack and Shodan EntityDB API need an API key?

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

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

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

Are serpstack and Shodan EntityDB API free for commercial use?

serpstack 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.