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Shields vs ValidEU API

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

APIShieldsHEALTHY100ValidEU APIHEALTHY97
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms30273
P95 · ms925786
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

Shields vs ValidEU API: common questions

Which is more reliable, Shields or ValidEU API?

Both are neck-and-neck — Shields and ValidEU 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, Shields or ValidEU API?

Shields has the lower median latency in our checks — Shields responds in 30 ms versus ValidEU API at 273 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 Shields and ValidEU API need an API key?

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

Can I call Shields and ValidEU API from the browser?

Only Shields 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 Shields and ValidEU API free for commercial use?

Shields 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.