Skip to content

Deploy your first Smart Contract on Cyber L2

In this tutorial we will be learning how to deploy a simple smart contracts on Cyber L2 using Forge in Foundry.

Step 1: Pre-requisites

Before deploying your smart contract, ensure you have completed the following:

  1. Add Cyber Testnet to MetaMask
    Follow the Guide for adding the Cyber network to your MetaMask wallet.

  2. Bridging Assets to Cyber Testnet
    Use the Bridging assets to Cyber guide to transfer assets from other networks to Cyber so you have funds available for deployment.

Step 2: Install Foundry

  • Linux or MacOS

    curl -L | bash
  • Windows

    curl --proto '=https' --tlsv1.2 -sSf | sh
    cargo install --git foundry-cli anvil --bins --locked

Step 3: Create a project

forge init hello_foundry
  • Foundry will create a new project directory with the name you specified. By default it will create a new project with a sample contract Counter and a sample test file.
cd hello_foundry
  1. We can build the project with forge build
$ forge build
  1. And run the tests with forge test
forge test

Step 4: Deploying your Smart Contract

Deploying a contract with Forge is a simple process that can be done with a single command. However, it requires an RPC endpoint, a private key that has funds, and any arguments for the constructor of the contract.

To deploy the Counter.sol contract, use the command that corresponds to the Cyber chain's RPC URL while running the forge create command:


    forge create --rpc-url "" --private-key YOUR_PRIVATE_KEY  src/Counter.sol:Counter


    forge create --rpc-url "" --private-key YOUR_PRIVATE_KEY src/Counter.sol:Counter

Step 5: Verify Your Smart Contract

After deployment, you can verify your smart contract on the Cyber Explorer by visiting Cyber Testnet Explorer or Cyber Mainnet Explorer. Search for your contract using its address and confirm that it has been successfully deployed.

Congratulations on deploying your contract on our mainnet!

Step 6: Join Cyber builders ecosystem

Visit our Ecosystem builder form and fill out all required fields. Provide the transaction hash of your Mainnet contract deployment as proof and submit the form.

Step 7: Join Discord and receive NFT Airdrop

After verifying your Mainnet contract deployment and form submission, you will receive an NFT airdrop to the provided wallet address. Keep an eye on announcements in Discord for updates on the airdrop distribution process.

If you face any issues, feel free to reach out to our engineers for Support.