How do I make a marketplace for my items using OpenSea?

If you are just starting your project and your contract is ERC721 or ERC1155 compliant, the process is fairly quick and easy. Just go to our developer tutorial and follow the instructions.

I've already built my project but it doesn't comply with the metadata standard. Can I still get listed?

Yes! Depending on the structure of your smart contract, we may be able to do a custom integration. In particular, if your contract is ERC721 or ERC1155 compliant, you can provide us with a metadata URL for your items that should be relatively easy to integrate.

Just send us a note at [email protected] and we'll reach out to you with next steps.

I'm just starting out. How can I make sure my items will be available on OpenSea?

That's great that you have a fresh start. We highly recommend following our OpenSea Developer Tutorial to learn how to properly structure your contract and metadata for full OpenSea compatibility. It's pretty quick to get started, and it's actually a lot of fun! We even have a video tutorial companion.

How can I get support while building my items?

Glad you asked. Please contact us to help with the integration. We also recommend signing up for our mailing list to get fresh updates on all things OpenSea.

Is this only for games?

Nope! We'll support any asset type, as long as it's on the blockchain. Check out the Dottabot Software License project, as well as Crypto Stamps for a couple examples of non-game projects.

I re-deployed my contract. How do I update the old one?

When you add the new contract with the same name as your previous contract, it will automatically have a new storefront with "V2" after the name (or "V3", "V4", etc.). For example, if we deployed another CryptoPuffs contract, it would have the name "CryptoPuffs V2" and be available at https://opensea.io/category/cryptopuffsv2

To update your smart contract, simply rename the old contract to CryptoPuffsOld, and rename the new contract to CryptoPuffs through the storefront customizer.

After you've updated your contract, you'll probably want to get rid of the old one. We don't have an interface for deleting old smart contracts, so you'll need to contact us. We'll be sure to get on it as soon as possible!

What does OpenSea provide for my Dapp?

OpenSea provides a powerful marketplace for your Dapp, allowing your items to be bought and sold quickly and easily. It's battle-tested and frequented by the most active community in the NFT space. OpenSea allows you to focus on design, content and your users, while still having a full-featured marketplace for your project's digital assets. Plus, you can set a fee on secondary sales so that you keep earning long after the initial item sale.

Customization

Your OpenSea storefront can be tailored exactly to your project, creating a fully customizable landing page and marketplace. If you're looking for even more customization that the native OpenSea marketplace, you can explore our white-label solution, as well as our OpenSea SDK for creating auctions directly inside your application.

Liquidity and discoverability