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Spoo.me vs Genderize.io

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

APISpoo.meUNMONITORED—Genderize.ioNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedKeyless usage limited (x-rate-limit-limit: 25 observed); 2,500 names/mo with a free key
Rate limitUnpublishedKeyless cap 25 per x-rate-limit-limit header; remaining/reset exposed in response headers
In directory since2026-07-052026-07-05
operationalpartialdownno data

Spoo.me vs Genderize.io: common questions

Which is more reliable, Spoo.me or Genderize.io?

Only Genderize.io is on our probe schedule so far (—% uptime over 90 days). The other is catalogued but not yet live-checked, so we can't compare measured reliability head-to-head — check the uncovered API's own status page for now.

Do Spoo.me and Genderize.io need an API key?

Neither needs a paid key — Spoo.me is callable with no signup, and Genderize.io is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Spoo.me and Genderize.io from the browser?

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

Are Spoo.me and Genderize.io free for commercial use?

Spoo.me has unclear commercial terms, and Genderize.io 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.