Rarible Multichain SDK is an open-source development tool created by leading NFT tool Rarible Protocol. This protocol helps developers to create NFT marketplaces and applications. Developers use Rarible Multichain SDK to create NFT collections, mint and sell NFTs, query NFT data, transfer tokens, and much more. Reducing the complexity of programming on-chain, Rarible Multichain SDK creates an abstraction layer for supported blockchains so it's easier to interact with blockchain logic.