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OpenSea

OpenSea — free tier with API key

🪙 Crypto & Web3UNMONITORED
AUTH APIKEYCORS ✓AGENT ?HTTPS ✓COMMERCIAL ?

OpenSea exposes a free-tier JSON API. Register for an API key if required; we verified a public or demo endpoint.

—HOW IT'S SCORED ⓘ
▶ Run liveDocs ↗
Status badge · for your READMEshipapis health badge: — · unmonitored
ON PROBE SCHEDULE

We probe a documented GET and expect 2xx JSON — full uptime and health score. Open provider docs ↗

Uptime historystarts after first probe

On our probe schedule. Uptime charts appear after the first check lands.

Example responsefrom provider docs — not verified by us
GET https://api.opensea.io/api/v2/collections/doodles-official&quot

{
  "errors": [
    "Missing an API Key, which is required for this request."
  ]
}
Call itcurl · fetch · python
curl "https://api.opensea.io/api/v2/collections/doodles-official&quot"
const res = await fetch("https://api.opensea.io/api/v2/collections/doodles-official&quot");
const data = await res.json();
console.log(data);
import requests

res = requests.get("https://api.opensea.io/api/v2/collections/doodles-official&quot")
print(res.json())
Endpoints · 6On scheduleFULL DOCS ↗
On schedule — GET /api/v2/collections/doodles-official&quot awaits first probe
GET/api/v2/collections/doodles-official&quotPROBED

OpenSea — free tier with API key

GET/api

Api — documented GET route.

GET/api/1

Api details by ID (example: 1).

GET/api?limit=10

Api — documented GET route.

GET/api/search?q=test

Search by query parameters.

GET/api/v2/traits/{slug}

Get collection traits

Machine-readable spec

We probe a documented GET and expect 2xx JSON — full uptime and health score. Export includes every documented route below.

Response-shape history

Not tracked yet. Shape-change history starts once this API joins our probe schedule.

OpenSea: common questions

Is OpenSea free to use?

Yes — OpenSea is a free crypto & web3 API. Free tier: Free tier — API key required. Whether the free tier allows commercial use is unclear — check the provider docs.

Does OpenSea need an API key?

Yes — OpenSea needs a free API key, which you pass on each request. Rate limits: Unpublished.

Can I call OpenSea from the browser?

Yes — OpenSea returns CORS headers over HTTPS, so front-end code can fetch it directly with no backend proxy. Use the fetch snippet on this page, or hit "Run live" to try it now.

Is OpenSea up right now?

OpenSea is catalogued but not yet on our probe schedule, so we don't publish a live status for it. Check the provider's own status page or docs for its current state.