OpenSea Developer Platform

As the first and largest marketplace for Non-Fungible Tokens and Semi-Fungible Tokens, OpenSea provides a first-in-class developer platform consisting of an API, SDK, and developer tutorials. Feel free to browse around and get acclimated with developing smart contracts and interacting with NFT data.

Fetch NFTs with our API

OpenSea provides a REST API for fetching NFT items based on a set of parameters. Apps can now display:

NFTs

Filter by collection, type, or wallet address.

Activity

Get all NFT related events (not just on our marketplace) including sales, listings, bids, transfers, and more.

Accounts

Get profile information for wallet addresses.

Power your in-app economy with OpenSea.js

Buy, sell, & bundle

Enable users to create auctions (w/o paying gas) in any currency, bid on items, and create multi-item bundles.

Easily pull in data on your NFT items

Access the OpenSea API with a JavaScript wrapper, allowing you to search NFTs, collections, users, and more.

Build on the largest marketplace for digital items