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Shodan EntityDB API vs User Agent Lookup API

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

APIShodan EntityDB APIHEALTHY87User Agent Lookup APIHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms918426
P95 · ms1306764
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Shodan EntityDB API vs User Agent Lookup API: common questions

Which is more reliable, Shodan EntityDB API or User Agent Lookup API?

Both are neck-and-neck — Shodan EntityDB API and User Agent Lookup API each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Shodan EntityDB API or User Agent Lookup API?

User Agent Lookup API has the lower median latency in our checks — Shodan EntityDB API responds in 918 ms versus User Agent Lookup API at 426 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Shodan EntityDB API and User Agent Lookup API need an API key?

Neither needs a paid key — Shodan EntityDB API is callable with no signup, and User Agent Lookup API is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Shodan EntityDB API and User Agent Lookup API from the browser?

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

Are Shodan EntityDB API and User Agent Lookup API free for commercial use?

Shodan EntityDB API has unclear commercial terms, and User Agent Lookup 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.