OpenSea API

NFT marketplace data and collection analytics

What is OpenSea API?

OpenSea is the largest NFT marketplace. Their API provides access to collection data, ownership information, trading activity, and more for building NFT applications.

API Features

  • Collection Data - Floor price, volume, owners
  • NFT Metadata - Attributes, images, descriptions
  • Trading History - Sales, transfers, bids
  • Ownership - Token ownership verification
  • Real-Time Events - WebSocket for live updates
  • Collection Stats - Historical analytics

API Endpoints

# Get collection stats
GET https://api.opensea.io/api/v2/collection/{slug}

# Get NFT metadata
GET https://api.opensea.io/api/v2/chain/{chain}/nft/{address}/{token_id}

# Get owners
GET https://api.opensea.io/api/v2/chain/{chain}/nfts/{address}/{token_id}/owners

# Get events
GET https://api.opensea.io/api/v2/events

Pricing

  • Free Tier - 4.5 requests/sec, 50K calls/day
  • Premium - Custom rates available

Build with OpenSea

Create NFT marketplaces, galleries, and analytics tools.

OpenSea → Docs →