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Photon API vs ValidEU API

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

APIPhoton APINEW—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

Photon API vs ValidEU API: common questions

Which is more reliable, Photon API or ValidEU API?

On our scheduled checks, ValidEU API leads on measured uptime — Photon API 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 Photon API and ValidEU API need an API key?

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

Can I call Photon API and ValidEU API from the browser?

Only Photon API 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 Photon API and ValidEU API free for commercial use?

Photon API 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.