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.

Open your own marketplace

Let your users freely trade your NFTs by opening your own marketplace on OpenSea.

Customize

You can finally open a beautiful, customizable marketplace on your own domain, fully integrated into your project.

Set your own fee

You can set your own fee on the secondary sales of your items on OpenSea. Whenever a user makes a sale, you earn a commission.

Get stats & insights

Get stats and insights to see how your collectibles are trending.

Run your own crowd sale

Sell the items in your game to an initial user base of early adopters. Even sell off items in your own token.

Sell packs of items

Instead of individual items, you can finally sell packs of items to give more to your users.

Gift items to users

Reward your users with items to grow your app's user base.

Create lootboxes

Create lootboxes to gamify your app and build engagement.