yan-man / eth-bot

bot to check eth prices, perform actions, etc

Eth Bot Price Checker v0.1.0

Bot to check eth prices against other ERC-20 tokens.

Connects to the Uniswap Factory smart contract on Ethereum mainnet via web3.js.

Quickstart

1. Clone project into empty directory:

   $ git clone https://github.com/yan-man/eth-bot.git
   

2. cd into directory

3. Get mainnet Infura RPC URL from: https://infura.io/

4. Copy example.json file to create default.json file in root config directory. Update RPC_URL field. interval field units are in seconds.

{
  "RPC_URL": "https://mainnet.infura.io/v3/______________",
  "PORT": 3000
  "INTERVAL": 5
}

5. Install dependencies:

$ npm install

6. Run project:

$ npm run dev

7. In console, you should see price comparisons displayed in a table, updating in regular intervals defined by INTERVAL field in default.json config. NOTE: some prices seem off, probably due to Uniswap V1 implementation.

Details

CRON jobs are set up to poll for data every 1 second. This can be configured in the ./index.js file - pollingInterval variable.

The selection of tokens that are included are in ./services/tokens.js file. Update relevant information to query for other token data.

Further:

• Add more ERC-20 tokens to compare
• Add more DEXs to find price spread differences and identify arbitrage opportunities
• Update to UniswapV3 implementation
• Include slippage adjustment
• Perform swaps based on price spread differences
• Add unit tests
• maybe ethers.js instead; easier to work with

Requirements

• node v17.1.0
• npm v8.1.3

Author

Yan Man