OpenSea

Build your own marketplace in minutes

OpenSea provides a one-stop shop for creating your own customizable marketplace for your ERC721 or non-fungible token (NFT) project. Allow users to smoothly buy and sell your items, get custom stats and analytics, and earn revenue when your items get traded.

Guides

Developer Tutorials

Select the developer tutorial that best suits your needs

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Start to finish: build a new tradeable ERC721 from scratch

This tutorial will teach you how to build an ERC721 from start to finish, with immediate OpenSea marketplace integration.

Estimated time: a few hours!

Get Started

Configure an existing mainnet ERC721 project with OpenSea

Have you already deployed your ERC721 contract on the mainnet? It's dead simple to get your items viewable and tradeable on OpenSea! This guide will show you how to configure your existing ERC721 items to get them to show up on Op.

If you haven't deployed to mainnet yet, we recommend the main OpenSea Developer Tutorial.

Get Started

Run a crowdsale for your items

If you're running a crowdsale for your ERC721 items, OpenSea has a suite of tools that allows you to auction your items off to an initial set of users. Note that we recommend completing the main OpenSea Developer Tutorial first.

Get Started

Pull collectible data using the OpenSea API.

In addition to an instant marketplace for ERC721-based items, OpenSea provides an HTTP API for fetching non-fungible ERC721 assets based on a set of query parameters.

Read the API docs

Developer Tutorials

Select the developer tutorial that best suits your needs

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