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Trading Bot

Technology Stack & Tools

  • Solidity (Writing Smart Contract)
  • Javascript (Bot & Testing)
  • Ethers (Blockchain Interaction)
  • Hardhat (Development Framework)
  • Alchemy (For forking the Ethereum mainnet)

Requirements For Initial Setup

Setting Up

1. Install Dependencies:

$ npm install

⚠️ Only use npm , do not use Yarn

2. Get API KEY from Alchemy:

3. Create and Setup .env

Before running any scripts, you'll need to create a .env file with the following values (see .env.example):

  • ETH_NODE_URI="https://eth-mainnet.alchemyapi.io/v2/apiKey"
  • MNEMONIC="season clay citizen print travel olive umbrella cream high wrestle cupboard trash" (I use this for testing only. the first account goingto recieve profit/execute arbitrage contract)
  • CONTRACT_ADDRESS="0xeE9F0a940f7eD451A08527Cb828B490D115dd51E" (Arbitrage contract address, it will appear to you after you deploy it)
  • PRICE_DIFFERENCE=0.50 (Difference in price between Uniswap & Sushiswap, default is 0.50%)
  • UNITS=0 (Only used for price reporting)
  • GAS_LIMIT=600000 (Currently a hardcoded value, may need to adjust during testing)
  • GAS_PRICE=0.0093 (Currently a hardcoded value, may need to adjust during testing)

4. Create and Setup pairs.config.js

Before running any scripts, you'll need to create a pairs.config.js file with the following values (see pairs.config.js.example):

  • for="0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2" (By default we are using WETH)
  • against="0x95aD61b0a150d79219dCF64E1E6Cc01f0B64C4cE" (By default we are using SHIB)
  • _unlockAddress=0xdEAD000000000000000042069420694206942069 (This is optional if you want to test locally and manipulate the pool price)
  • _swapAmount=405000000000000 (This is optional if you want to test locally and manipulate the pool price)

5. Start Hardhat node, deploy contract and start the bot

$ npm run node:deploy:bot

6. Manipulate Price

In another terminal run: $ npm run swap <PairIndexNumber>

MAINNET

1. deploy contract

$ npm run deploy -- --network mainnet

2. verify contract

$ npm run verify -- --network mainnet

2. Copy contract address and put it in .env file

CONTRACT_ADDRESS_MAINNET="0xeE9F0a940f7eD451A08527Cb828B490D115dd51E"

3. Run the bot

$ npm run bot -- --network mainnet

GOERLI

1. deploy contract

$ npm run deploy -- --network goerli