This project demonstrates the implementation of EIP-7702 using viem's experimental features.

⚠️ Important Notice: This is an experimental implementation of EIP-7702. Currently, wallet and RPC provider support is limited. The demo uses Alchemy, but your wallet might override this.

EIP-7702 is one of the most exciting Ethereum improvements in a while. It lets your regular wallet (EOA) temporarily gain smart contract superpowers!

Imagine your wallet could:

• Do multiple things in one go - Like sending tokens to 10 people at once, saving you gas and time
• Let someone else pay gas fees for you - Perfect for onboarding new users who don't have ETH yet

Without EIP-7702, you'd need to deploy an actual smart contract wallet to do any of this. Now your regular wallet can have these powers temporarily, exactly when needed!

Technically speaking: EIP-7702 introduces a new transaction type (0x04) with a delegation mechanism that injects contract code into your EOA's execution context.

This demo provides two ways to explore EIP-7702:

See EIP-7702 in action with the example from viem's docs! Send ETH to multiple recipients in a single transaction - something normally impossible with a regular wallet.

• 🔄 Batch transfer ETH to multiple recipients in one transaction
• 📝 Detailed activity logging and real-time feedback
• 🛡️ Simple, focused implementation of the viem example

The real power tool! Test EIP-7702 with any contract of your choice. Just paste a contract address, select a function, and our tool will handle the EIP-7702 transaction setup for you.

• 📄 ABI detection and function parsing
• 🎮 Dynamic form generation for any contract function
• 📱 Visual transaction builder and previewer
• 🔍 Transaction status tracking and error handling

• 🔌 Supports both Sepolia and Holesky testnets

• 💼 MetaMask and other web3 wallet support (once they ship it)

Try it out at [https://eip7702demo.netlify.app/]

1. Clone the repository:

git clone https://github.com/yourusername/eip7702-viem-demo.git
cd eip7702-viem-demo

2. Install dependencies:

npm install

3. Create a .env file with your Alchemy API key:

VITE_ALCHEMY_API_KEY=your_alchemy_api_key

4. Start the development server:

npm run dev

The BatchCallDelegation contract is deployed at:

• Sepolia: 0x6987E30398b2896B5118ad1076fb9f58825a6f1a
• Holesky: 0x979dd1ab4a7e3b3370b1daceec8b4198f97e0d6f

To deploy to a different network:

forge script script/Deploy.s.sol --rpc-url your_rpc_url --broadcast

1. Authorization: When initiating a transaction, your wallet signs an authorization message allowing the contract to act as an interface.

2. Transaction Creation: The signed authorization is included with your transaction data containing the instructions.

3. Execution: During processing, the EVM temporarily injects the contract's code into your EOA's context.

4. Processing: The contract's functions run within your EOA's context, executing all operations atomically.

• Built with SvelteKit and Viem
• Uses Foundry for contract deployment
• Implements EIP-7702 with multiple fallback methods for wallet compatibility

# Install dependencies
npm install

# Start development server
npm run dev

# Build for production
npm run build

# Deploy contracts (requires Foundry)
forge script script/Deploy.s.sol --rpc-url $RPC_URL --broadcast

Contributions are welcome! Please feel free to submit a Pull Request.

MIT

• Viem for their experimental EIP-7702 implementation
• EIP-7702 authors and contributors