概要
This skill provides comprehensive guidance for developing non-fungible tokens using ERC-721 and multi-tokens via ERC-1155. It covers essential smart contract patterns including gas-optimized minting with ERC721A, on-chain and off-chain metadata management using IPFS, EIP-2981 royalty implementation, and the creation of soulbound or dynamic NFTs. Perfect for developers building digital art collections, Web3 marketplaces, or gaming assets who need battle-tested, production-ready implementation patterns and marketplace compatibility.