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OpenSea vs Pharos API

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

APIOpenSeaDEAD0Pharos APIDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeyapiKey
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFree tier — API key required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenSea vs Pharos API: common questions

Which is more reliable, OpenSea or Pharos API?

Both are neck-and-neck — OpenSea and Pharos API each measure 0.0% 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.

Do OpenSea and Pharos API need an API key?

Both ask you to authenticate — OpenSea uses an API key and Pharos API 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 Pharos API from the browser?

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

Are OpenSea and Pharos API free for commercial use?

OpenSea has unclear commercial terms, and Pharos 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.