Can I create NFTs with on-chain metadata?

Yes, it provides patterns for base64 encoded JSON and SVG generation directly on the blockchain, removing dependence on external storage.

Does it support marketplace royalties?

Yes, it includes full implementations for EIP-2981, ensuring your contract communicates royalty info correctly to platforms like OpenSea and Rarible.

Which NFT standards are supported by this skill?

This skill provides comprehensive coverage for ERC-721 (non-fungible), ERC-1155 (multi-token), and the gas-optimized ERC721A standard.

What is the benefit of using the ERC721A pattern included here?

ERC721A allows for minting multiple NFTs for the cost of almost a single one, significantly reducing gas fees for your users during large drops.

How are Soulbound tokens handled?

The skill includes logic to override transfer hooks, ensuring tokens are locked to the recipient's wallet for use in identity or achievement systems.

NFT Standards & Smart Contracts

Name: NFT Standards & Smart Contracts
Author: HermeticOrmus

byHermeticOrmus

E-commerce Solutions

Implements industry-standard NFT protocols including ERC-721 and ERC-1155 with advanced features like royalties and gas-optimized minting.

About

This skill empowers developers to build sophisticated NFT ecosystems by providing battle-tested patterns for ERC-721 and ERC-1155 standards. It covers the complete lifecycle of digital assets, from metadata handling (IPFS and on-chain) to specialized implementations like Soulbound tokens, dynamic NFTs that evolve based on state, and EIP-2981 royalty enforcement. By leveraging gas-optimized strategies like ERC721A, it ensures efficient deployment and minting, making it an essential resource for building NFT marketplaces, gaming assets, or digital collectibles.

Key Features

EIP-2981 royalty support for marketplace compatibility
Specialized token patterns including Soulbound and Dynamic NFTs
0 GitHub stars
Gas-optimized batch minting with ERC721A integration
Standardized ERC-721 and ERC-1155 implementation using OpenZeppelin
Advanced metadata handling for IPFS and on-chain SVG generation

Use Cases

Building an on-chain gaming inventory system with multi-token support
Developing a high-volume NFT collection with gas-efficient minting
Implementing a digital identity or credentialing system using Soulbound tokens

About

Key Features

EIP-2981 royalty support for marketplace compatibility
Specialized token patterns including Soulbound and Dynamic NFTs
0 GitHub stars
Gas-optimized batch minting with ERC721A integration
Standardized ERC-721 and ERC-1155 implementation using OpenZeppelin
Advanced metadata handling for IPFS and on-chain SVG generation

Use Cases

Building an on-chain gaming inventory system with multi-token support
Developing a high-volume NFT collection with gas-efficient minting
Implementing a digital identity or credentialing system using Soulbound tokens