OpenSea is the world's first and largest NFT marketplace for NFTs and crypto collectibles.
Tools
Build Criteria Offer
Build a portion of a criteria offer including the merkle tree needed to post an offer.
Cancel Order
Offchain cancel a single order, offer or listing, by its order hash when protected by the SignedZone. Protocol and Chain are required to prevent hash collisions. Please note cancellation is only assured if a fulfillment signature was not vended prior to cancellation.
Create Criteria Offer
Create a criteria offer to purchase any NFT in a collection or which matches the specified trait.
Create Item Offer
Create an offer to purchase a single NFT (ERC721 or ERC1155).
Create Listing
List a single NFT (ERC721 or ERC1155) for sale on the OpenSea marketplace.
Fulfill Listing
Retrieve all the information, including signatures, needed to fulfill a listing directly onchain.