Open your own marketplace

Let your users freely trade your ERC721 and ERC1155 items 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.

Airdrop items to users as rewards

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

Create lootboxes

Create lootboxes to gamify your app and build engagement.

Power your in-app economy with OpenSea.js

Buy, sell, & bundle

• Enable users to instantly create auctions (without paying gas) in any currency of their choosing.
• Let users bid directly on items.
• Allow users to create multi-item bundles (even with items from other games!)

Easily pull in data on your assets

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

Fetch assets with our API

OpenSea provides an HTTP API for fetching non-fungible ERC721 assets based on a set of query parameters. Wallets and websites can now display:

Assets

Get assets filtered by a particular collectible type, or belonging to a particular wallet address

Activity

Get events happening on all assets (not just on our marketplace), including sales, listings, bids, transfers, and more

Profile

Get usernames and profile details for account addresses