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OpenSea vs VALR

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

APIOpenSeaNEW—VALRNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenSea vs VALR: common questions

Which is more reliable, OpenSea or VALR?

On our scheduled checks, VALR leads on measured uptime — OpenSea at —% versus VALR 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 OpenSea and VALR need an API key?

Both ask you to authenticate — OpenSea uses an API key and VALR uses an API key. Each key is free to obtain; the Auth and Card-required rows above spell out the signup terms.

Can I call OpenSea and VALR from the browser?

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

Are OpenSea and VALR free for commercial use?

OpenSea has unclear commercial terms, and VALR 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.