terryzhao / flashbot

Flashbot

Flashbot is an arbitrage bot that fills 0x limit orders using DY/DX flash loans and 1inch.exchange

Based on extropy.io defi bot But uses 1inch v2 API instead of 1inch v1 (OneSplit) smart contract

How it works

1. Fetches 0x limit orders from Mesh network
2. Checks 1inch.exchange prices and finds if there is a profitable arbitrage opportunity
3. If the opportunity was found Flashbot calls getFlashLoan function of TradingBot.sol smart contract which:
   • flash borrows 10 000 WETH from DY/DX
   • Fills 0x WETH/DAI order
   • Makes a swap on 1inch.exchange to get WETH for DAI from the previous step
   • Checks if arbitrage was profitable
   • If not profitable reverts transaction, if yes - pays borrowed WETH back to DY/DX

Example output

How to run and test

npm i

Fill in .env file like in .env.example

Create a local ethereum mainnet fork:

NODE_OPTIONS="--max-old-space-size=4096" ganache-cli --fork https://mainnet.infura.io/v3/<YOUR INFURA KEY> -p 8545 --gasLimit 0xfffffffffff -d --mnemonic "YOUR MNEMONIC HERE"

Compile and deploy FlashBot smart contract

truffle migrate

Run Flashbot

node ./src/bot.js

Future work

1. Add more flash loan protocols
2. Add a possibility to choose assets pairs for the arbitrage and choose the arbitrage strategy
3. Liquidation bot