Update Custom Fees for HTS Tokens via Contract (HIP-1010 Reference Implementation)

This repository shows how to update custom fees for HTS tokens (fungible and NFT) via a smart contracts, which is enabled by HIP-1010. The example demonstrates how to interact with HTS precompiles using standard Solidity interfaces, enabling developers to work with Hedera tokens using familiar ERC-like patterns.

Try It in Gitpod

1. Enter your Hedera testnet credentials in the .env file

2. Run tests for fungible tokens, NFTs, or both:

   Fungible Token	NFT
   npx hardhat test ./test/updateFungibleTokenFeeViaContract.test.js	npx hardhat test ./test/updateNftFeeViaContract.test.js

Local Setup

1. Clone the repository

   git clone https://github.com/ed-marquez/hedera-example-update-token-fees-via-contract-hip-1010.git

2. Copy .env.sample to .env and add your environment variables (and Hedera testnet credentials)

   cp .env.sample .env

3. Install dependencies

   npm install

4. Run tests for fungible tokens, NFTs, or both:

   npx hardhat test ./test/updateFungibleTokenFeeViaContract.test.js

   npx hardhat test ./test/updateNftFeeViaContract.test.js

   npx hardhat test

5. Follow the instructions in the terminal

Key Files

• .env: Account credentials and environment variables
• hardhat.config.js: Hardhat configuration including network settings and compiler options
• constants.js: Network configurations and default values
• utils/tokenOperations.js: Functions for creating and managing HTS tokens
• utils/contractInterfaces.js: ABI interfaces for HTS precompile interactions
• test/: Test files demonstrating HTS precompile usage patterns