Deploy Your APP
Use Hardhat


Hardhat (opens in a new tab) is an Ethereum development environment. Compile your contracts and run them on a development network. Get Solidity stack traces, console.log and more.

You can use Hardhat to edit, compile, debug, and deploy your smart contracts to Mint.

Creating a Hardhat Project

  1. Create a directory for your project:
mkdir hardhat && cd hardhat
  1. Initialize the project, which will create a package.json file
npm init -y
  1. Install Hardhat
npm install hardhat
  1. Create a project
npx hardhat
  1. Create an empty hardhat.config.js and install the Ethers plugin to use the Ethers.js library to interact with the network.
npm install @nomiclabs/hardhat-ethers ethers

Creating Your Smart Contract

  1. Create a contracts directory
mkdir contracts && cd contracts
  1. Create your_contract.sol file in contracts directory
touch your_contract.sol

Creating Your Configuration File

Modify the Hardhat configuration file and create a secure file to store your private key in.

  1. Create a secrets.json file to store your private key
touch secrets.json
  1. Add your private key to secrets.json
  "privateKey": "YOUR-PRIVATE-KEY-HERE"
  1. Add the file to your project’s .gitignore, and never reveal your private key.

  2. Modify the hardhat.config.js file

    • Import the Ethers.js plugin
    • Import the secrets.json file
    • Inside the module.exports add the Mint network configuration
const { privateKey } = require('./secrets.json');
module.exports = {
  solidity: "0.8.20",
  defaultNetwork: "mint-local",
  networks: {
      // for mainnet
    "mint-mainnet": {
      url: "",
      accounts: [process.env.PRIVATE_KEY as string],
      gasPrice: 1000000000,
    // for Sepolia testnet
    "mint-sepolia": {
      url: "",
      accounts: [process.env.PRIVATE_KEY as string]
      gasPrice: 1000000000,
    // for local dev environment
    "mint-local": {
      url: "http://localhost:8545",
      accounts: [process.env.PRIVATE_KEY as string],
      gasPrice: 1000000000,