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OWASP API Security Project vs ValidEU API

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

APIOWASP API Security ProjectNEW—ValidEU APINEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthnoneapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OWASP API Security Project vs ValidEU API: common questions

Which is more reliable, OWASP API Security Project or ValidEU API?

On our scheduled checks, ValidEU API leads on measured uptime — OWASP API Security Project at —% versus ValidEU 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 OWASP API Security Project and ValidEU API need an API key?

OWASP API Security Project needs no key, while ValidEU API requires a free API key. If you want to start calling without signup, reach for OWASP API Security Project first.

Can I call OWASP API Security Project and ValidEU API from the browser?

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

Are OWASP API Security Project and ValidEU API free for commercial use?

OWASP API Security Project has unclear commercial terms, and ValidEU 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.