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kingswap-contracts's Introduction

KingSwap Contracts

KingSwap is a platform that enables users without native tokens to use an ERC20Permit compatible token for paying swap transaction fees towards a native token. It utilizes the EIP-2612 standard, allowing users to sign a message that authorizes a spender to use their tokens on their behalf. By integrating with PancakeSwapV4 hooks, KingSwap efficiently refunds transaction fees to the relayer on the user's behalf.

Contracts Overview

KingSwap

  • Description: The central contract that users interact with for token swapping and for the relayer to receive refunds on transaction fees.
  • Main Functions:
    • Token swapping
    • Refunding the relayer for transaction fees

KingSwapHook

  • Description: This contract monitors the gas expended by the relayer to cover transaction fees for the user.
  • Key Operations:
    • Receives tokens from the PancakeSwap Vault
    • Splits tokens between the relayer and the user

Development Guide

Install Dependencies

forge install

Compile Contracts

forge compile

Run Tests

forge test

Deployed Contracts Information

Base Sepolia Testnet

Arbitrum Sepolia Testnet

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