CoW Protocol SDK — DeFi Router

Contract Details

Categorysdk

Files20

Price$9.99

Tech Stack

TypeScript Python ethers.js httpx eth-account

Chains

Ethereum Gnosis Arbitrum

Description

TypeScript/Python SDK for integrating CoW Protocol (Coincidence of Wants) surplus-based fee routing. Create orders, get quotes, track settlements, and capture MEV protection surplus. Supports both CoW Swap API and on-chain GPv2Settlement interactions.

Features

✓ Full CoW Protocol API client (TypeScript + Python)
✓ EIP-712 order signing with domain separation
✓ Surplus tracking and savings calculation
✓ Order lifecycle: create, quote, track, cancel
✓ Multi-chain support (Mainnet, Gnosis, Arbitrum)
✓ Rate-limited HTTP client with exponential backoff
✓ Comprehensive type definitions and NatSpec
✓ Async Python client with httpx

cow-protocol-sdk.sol

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title CoW Protocol SDK
/// @notice SDK for integrating CoW Protocol surplus-based fee routing.
contract CowProtocolSdk {
    address public immutable owner;
    uint256 public constant VERSION = 1;

    event Initialized(address indexed deployer);

    constructor() {
        owner = msg.sender;
        emit Initialized(msg.sender);
    }

    // ... full implementation in purchased package
}