Swapping a Native Token to ERC-20

With Intent Swap, you can swap a chain's native token (like ETH on Ethereum) to any ERC-20 token. This is ideal for users who hold only native tokens and want to acquire other assets without first wrapping them manually.

How It Works

Native token swaps require an additional on-chain step compared to ERC-20 swaps:

1. Create Order - The SDK generates a FusionOrder with optimal auction parameters
2. Submit to Relayer - Use submitNativeOrder() to register the order with the resolver network
3. Deploy Escrow - Use NativeOrdersFactory to deploy an escrow contract that holds your native token
4. Automatic Wrapping - The escrow wraps your native token (e.g., ETH → WETH) and locks it
5. Order Execution - Resolvers compete to fill your order at the best price
6. Direct Delivery - The destination token is transferred directly to your wallet

If no resolver fills the order before expiry, the escrow returns your native token.

Key Differences from ERC-20 Swaps

• No approval needed - Native tokens don't require ERC-20 approval
• Escrow deployment required - You must send a transaction to deploy the escrow contract
• Small gas cost - The escrow deployment costs a small amount of gas (~0.001 ETH)

Interactive Code Example

Explore the complete implementation — this example demonstrates swapping native ETH for USDC on Ethereum mainnet: