概要
This skill provides comprehensive guidance for building NFT ecosystems on Ethereum and EVM-compatible chains. It covers the full lifecycle of digital assets, from implementing base ERC-721 and ERC-1155 standards using OpenZeppelin to advanced patterns like on-chain metadata, soulbound tokens, and EIP-2981 royalties. Whether you are launching a generative art collection, building in-game items, or developing a marketplace, this skill ensures best practices for gas efficiency, security, and cross-platform marketplace compatibility.