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Deploy a smart contract on Monad using Hardhat

Hardhat is a comprehensive development environment consisting of different components for editing, compiling, debugging, and deploying your smart contracts.

Requirements​

Before you begin, you need to install the following dependencies:

  • Node.js v18.0.0 or later
note

If you are on Windows, we strongly recommend using WSL 2 when following this guide.

1. Create a new Hardhat project​

tip

You can use the hardhat-monad template to create a new project with Monad configuration already set up.

hardhat-monad is a Hardhat template with Monad configuration.

Clone the repository to your machine using the command below:

git clone https://github.com/monad-developers/hardhat-monad.git

2. Install dependencies​

npm install

3. Create an .env file​

cp .env.example .env

Edit the .env file with your private key.

warning

Protect your private key carefully. Never commit it to version control, share it in public repositories, or expose it in client-side code. Your private key provides full access to your funds.

4. Deploy the smart contract​

Deploying to the local hardhat node​

Run hardhat node by running:

npx hardhat node

To deploy the example contract to the local hardhat node, run the following command in a separate terminal:

npx hardhat ignition deploy ignition/modules/Lock.ts

Deploying to Monad Testnet​

The following command will deploy the example contract to the Monad Testnet using Hardhat Ignition:

npx hardhat ignition deploy ignition/modules/Lock.ts --network monadTestnet

To redeploy the same code to a different address, use the command below:

npx hardhat ignition deploy ignition/modules/Lock.ts --network monadTestnet --reset

You can customize deployment parameters:

npx hardhat ignition deploy ignition/modules/Lock.ts --network monadTestnet --parameters '{"unlockTime": 1893456000, "lockedAmount": "1000000000000000"}'

Next Steps​

Check out how to verify the deployed smart contract on Monad Explorer.