Get started by requesting an API key and instantiating your own OpenSea SDK instance. It allows developers to access the official orderbook, filter it, create buy orders ( offers), create sell orders ( auctions), and complete trades programmatically. This is the JavaScript SDK for OpenSea, the largest marketplace for NFTs. You don't have to deploy your own smart contracts or backend orderbooks. These can be ERC-721 or ERC-1155 (semi-fungible) items.
With OpenSea.js, you can easily build your own native marketplace for your non-fungible tokens, or NFTs. A JavaScript library for crypto-native ecommerce: buying, selling, and bidding on any cryptogood.
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