🏗 scaffold-stylus

Documentation | Website

🧪 An open-source, up-to-date toolkit for building decentralized applications (dapps) on the Arbitrum blockchain. It's designed to make it easier for developers to create and deploy smart contracts and build user interfaces that interact with those contracts.

⚙️ Built using Rust, NextJS, RainbowKit, Stylus, Wagmi, Viem, and TypeScript.

• ✅ Contract Hot Reload: Your frontend auto-adapts to your smart contract as you edit it.
• 🪝 Custom hooks: Collection of React hooks wrapped around wagmi to simplify interactions with smart contracts with TypeScript autocompletion.
• 🧱 Components: Collection of common web3 components to quickly build your frontend.
• 🔥 Burner Wallet & Local Faucet: Quickly test your application with a burner wallet and local faucet.
• 🔐 Integration with Wallet Providers: Connect to different wallet providers and interact with the Arbitrum network.

Requirements

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

• Node (>= v20.18)
• Yarn (v2+)
• Git
• Docker
• Foundry Cast
• Solc (Solidity compiler)

Note: Windows Compatibility

Scaffold-Stylus currently does not support Windows natively. If you're using Windows, we recommend:

• Use WSL (Windows Subsystem for Linux) - Install WSL2 and run Scaffold-Stylus within the Linux environment
• Switch to Linux or macOS - For the best development experience

For WSL setup, follow the Microsoft WSL installation guide.

Quickstart

To get started with Scaffold-Stylus, follow the steps below:

1. Install Stylus tools (or use stylusup)

If you prefer a one-liner, install via stylusup (recommended):

Tool for installing all the Stylus essentials for development. Stylusup will install the latest stable versions of:

• Rust (if not present) to provide the core programming environment.
• cargo-stylus (latest version) a tool for creating and managing Stylus projects.
• Adding WebAssembly support to compile Rust code for blockchain environments.
• Optionally collecting and sending telemetry data to track installation statistics.

curl -s https://stylusup.sh/install.sh | sh

Alternatively, install Rust and the Stylus CLI tool with Cargo:

curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh

Check the Rust installation guide for more information.

Then install the Stylus CLI tools:

cargo install --force --locked cargo-stylus@0.10.2

Prerequisite:

• cargo-stylus version 0.10.2
• rustc version match with packages/stylus/contracts/rust-toolchain.toml

Set default toolchain match rust-toolchain.toml and add the wasm32-unknown-unknown build target to your Rust compiler:

rustup default 1.89
rustup target add wasm32-unknown-unknown --toolchain 1.89

You should now have it available as a Cargo subcommand:

cargo stylus --help

2. Create a new project (recommended)

Use the interactive setup to scaffold a new project:

npx create-stylus@latest

Then navigate into your project directory:

cd <project-name>
yarn install
# Initialize submodules (required for Nitro dev node)
git submodule update --init --recursive

3. Clone this repo & install dependencies (alternative)

git clone https://github.com/Arb-Stylus/scaffold-stylus.git
cd scaffold-stylus
yarn install
# Initialize submodules (required for Nitro dev node)
git submodule update --init --recursive

4. Run a local network

In your first terminal:

yarn chain

This command starts a local Stylus-compatible network using the Nitro dev node script (./nitro-devnode/run-dev-node.sh). The network runs on your local machine and can be used for testing and development. You can customize the Nitro dev node configuration in the nitro-devnode submodule.

5. Deploy the test contract

In your second terminal:

yarn deploy

This command deploys a test smart contract to the local network. The contract is located in packages/stylus/contracts/your-contract/src and can be modified to suit your needs. The yarn deploy command uses the deploy script located in packages/stylus/scripts to deploy the contract to the network. You can also customize the deploy script .

6. Start your NextJS app

In your third terminal:

yarn start

Visit your app at: http://localhost:3000. You can interact with your smart contract using the Debug Contracts page, which provides a user-friendly interface for testing your contract's functions and viewing its state.

7. Test your smart contract

yarn stylus:test

Development Workflow

• Edit your smart contract lib.rs in packages/stylus/contracts/your-contract/src
• Edit your frontend in packages/nextjs/app
• Edit your deployment scripts in packages/stylus/scripts

Create Your Own Contract

Scaffold-Stylus enables you to create and deploy multiple contracts within a single project. Follow the steps below to create and deploy your own contracts.

Step 1: Generate New Contract

Use the following command to create a new contract and customize it as needed:

yarn new-module <contract-name>

The generated contract will be located in packages/stylus/contracts/<contract-name>.

Workspace structure: packages/stylus/contracts is a Cargo workspace with members = ["*"]. yarn new-module <name> (via scripts/new_module.sh) scaffolds the new contract under contracts/ — the glob auto-discovers it, no manual wiring needed.

Step 2: Validate Your Contract Before Deployment

Before deploying, it's recommended to validate your contract size using cargo stylus check:

cd packages/stylus/contracts/<contract-name>
cargo stylus check

This command performs several important checks:

• Contract size validation: Ensures your contract doesn't exceed size limitations
• WASM compilation: Verifies your Rust code compiles to WebAssembly
• Deployment hash computation: Calculates the deployment hash
• WASM data fee estimation: Estimates the cost of deploying your contract

Contract Size Indicators:

• 🔴 Red indicator: Contract size exceeds limitations - DO NOT DEPLOY
• 🟡 Yellow/🟢 Green indicator: Contract size within acceptable limits - OK to deploy

Important: When using constructors, error logs from constructor execution may not be visible. Consider using initialize() functions instead for better error visibility.

Step 3: Deploy Your Contract

yarn deploy [...options]

This command runs the deploy.ts script located in packages/stylus/scripts. You can customize this script with your deployment logic.

Available Options:

• --network <network>: Specify which network to deploy to
• --estimate-gas: Only perform gas estimation without deploying
• --max-fee=<maxFee>: Set maximum fee per gas in gwei

Note: Deployment information is automatically saved in packages/stylus/deployments by default.

Deploying to Other Networks

To deploy your contracts to other networks (other than the default local Nitro dev node), you'll need to configure your RPC endpoint and wallet credentials.

Prerequisites

1. Set the RPC URL

Configure your target network's RPC endpoint using the proper RPC_URL_<network> environment variable. You can set this in your shell or create a .env file (see .env.example for reference):

env RPC_URL_SEPOLIA=https://your-network-rpc-url

Note: If RPC URL is not provided, system will use default public RPC URL from that network

1. Set the Private Key

For real deployments, you must provide your own wallet's private key. Set the PRIVATE_KEY_<network> environment variable:

env PRIVATE_KEY_SEPOLIA=your_private_key_here

Security Note: A development key is used by default when running the Nitro dev node locally, but for external deployments, you must provide your own private key.

1. Set the Account Address

Set the ACCOUNT_ADDRESS_<network>

env ACCOUNT_ADDRESS_SEPOLIA=your_account_address_here

1. Update Frontend Configuration

Open packages/nextjs/scaffold.config.ts and update the targetNetworks array to include your target chain. This ensures your frontend connects to the correct network and generates the proper ABI in deployedContracts.ts:

ts import * as chains from "./utils/scaffold-stylus/supportedChains"; // ... targetNetworks: [chains.arbitrumSepolia],

Arbitrum Testnet Faucets (Optional)

For Arbitrum testnets, you may need testnet ETH to deploy contracts. You can obtain testnet tokens from these faucets:

• Chainlink Faucet
• QuickNode Faucet
• Alchemy Faucet

Available Networks

This template supports Arbitrum networks only. You can test which networks are available and their RPC URLs:

yarn info:networks

This will show you all supported networks and their corresponding RPC endpoints.

Deploy to Other Network (Non-Orbit Chains)

Once configured, deploy to your target network:

yarn deploy --network <network>

Important Security Notes:

• The values in .env.example provide a template for required environment variables
• Always keep your private key secure and never commit it to version control
• Consider using environment variable management tools for production deployments

Deploy to Orbit Chains

Visit our Deploy to Orbit chain documentation for detailed guide

Verify your contract (Highly Experimental)

Visit our Verify section

🛠️ Troubleshooting Common Issues

Visit our Troubleshooting section

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Documentation

Visit our docs to learn how to start building with Scaffold-Stylus.

To learn more about its features, check out our website.

Contributing to Scaffold-Stylus

We welcome contributions to Scaffold-Stylus!

Please see CONTRIBUTING.md for more information and guidelines for contributing to Scaffold-Stylus.