0x Protocol (zerox)

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What it offers

• transformERC20: Execute a token swap via the Exchange Proxy transformer pipeline

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Notes

• The Exchange Proxy address is the same on 6 of its 7 chains; Optimism’s differs
• Uses transformer pipeline architecture - each swap is a sequence of transformations
• Route computation happens via 0x API - transformations array comes from API response
• Approve inputToken to exchangeProxy before swapping
• 0x API provides the route, slippage protection, and transformer calldata

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Its names in a program

function main() {
  // Ethereum's exchangeProxy, `0xDef1C0ded9bec7F1a1670819833240f027b25EfF`.
  require(Zerox.ExchangeProxy != 0);
}

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Deployments

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ABI

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ExchangeProxyABI

• transformERC20(address inputToken, address outputToken, uint256 inputTokenAmount, uint256 minOutputTokenAmount, (uint32 deploymentNonce, bytes data)[] transformations) payable returns (uint256 outputTokenAmount)

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Next steps

• Protocols: the other protocols, by what they do.
• Protocols and tokens: calling a contract by its namespace, or through its ABI.
• Glossary: the words these pages use, in plain terms.