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⚠️THE AAVE LIQUIDATOR IS NO LONGER BEING MAINTAINED⚠️

Development and maintenance of the aave liquidator has stopped as of September 2020!
The repository is left public for demo / educational purposes only!

AAVE Liquidator

This script allows monitoring of a single address that has an outstanding loan on AAVE. Once that address has a health factor below 1 a liquidation call will be issued!

THIS SCRIPT MAY CONTAIN FAULTS! USE AT YOUR OWN RISK!

Installation Guide

Prerequisites

  1. Download and install node from the Official site
  2. Create an account on Infura and set up a new project
  3. Obtain Eth gas station api key

Setup

  1. Clone the repo
  2. Run npm install to install all dependencies
  3. In the root of the project create a file called config.json and copy the content below into it.
    Make sure config.json has EXACTLY the same structure but with YOUR data as shown below
{
  "mainnet": {
    "liquidatorAddress": "Address FROM which you will liquidate",
    "addressToLiquidate": "The address you wish TO liquidate",
    "collateralAddress": "Address of the collateral you wish to recieve",
    "repayTokenAddress": "Address of the token you liquidate with",
    "lpAddressProviderAddress": "0x24a42fD28C976A61Df5D00D0599C34c4f90748c8",
    "lpAddress": "0x398eC7346DcD622eDc5ae82352F02bE94C62d119",
    "latestLpCoreAddress": "0x3dfd23A6c5E8BbcFc9581d2E864a68feb6a076d3",
    "wss": "wss://mainnet.infura.io/ws/v3/YOUR_PRJECT_ID",
    "http": "https://mainnet.infura.io/v3/YOUR_PRJECT_ID",
    "mnemonic": "Seed phrase to your wallet",
    "ethGasStationAPIKey": "Your ETH GAS STATION API KEY",
    "dynamicGasPrice": "set to <true> or <false> depending on whether you want to set your own gas price or use eth gas station",
    "liquidationAmount": "Amount you wish to liquidate in WEI. Enter <"0"> and it will liquidate as much as possible",
    "gasPrice": "Gas price in WEI. I recommend you set this to (AT LEAST) the fastest as suggested by https://ethgasstation.info/",
    "gasLimit": 1000000,
    "receiveATokens": "Set to <true> or <false> depending on whether you want to receive you collateral as aTokens or not"
  },
  "ropsten": {
    "liquidatorAddress": "Address FROM which you will liquidate",
    "addressToLiquidate": "The address you wish TO liquidate",
    "collateralAddress": "Address of the collateral you wish to recieve",
    "repayTokenAddress": "Address of the token you liquidate with",
    "lpAddressProviderAddress": "0x1c8756FD2B28e9426CDBDcC7E3c4d64fa9A54728",
    "lpAddress": "0x9E5C7835E4b13368fd628196C4f1c6cEc89673Fa",
    "latestLpCoreAddress": "0x4295Ee704716950A4dE7438086d6f0FBC0BA9472",
    "wss": "wss://ropsten.infura.io/ws/v3/YOUR_PRJECT_ID",
    "http": "https://ropsten.infura.io/v3/YOUR_PRJECT_ID",
    "mnemonic": "Seed phrase to your wallet",
    "ethGasStationAPIKey": "Your ETH GAS STATION API KEY",
    "dynamicGasPrice": "set to <true> or <false> depending on whether you want to set your own gas price or use eth gas station",
    "liquidationAmount": "Amount you wish to liquidate in WEI. Enter <"0"> and it will liquidate as much as possible",
    "gasPrice": "Gas price in WEI. I recommend you set this to (AT LEAST) the fastest as suggested by https://ethgasstation.info/",
    "gasLimit": 1000000,
    "receiveATokens": "Set to <true> or <false> depending on whether you want to receive you collateral as aTokens or no"
  }
}

The ropsten part of the json object is only necessary if you wish to play around on the ropsten network before you run this on mainnet.
You can find AAVES's testnet solution here!
You can find the addresses of the different AAVE contracts and tokens for mainnet and ropsten here!

Running instructions

Approve

If you have not allowed AAVE's LendingPoolCore contract to spend the token type as you specified in the repayTokenAddress field in the config.json file, you will not be able to perform a liquidation and your transaction will fail! I have included a script that you can use to allow the contract to spend your specified repayToken! The script will perform a "inifity unlock" So you only need to run this once per token type. urthermore it will update 'config.json' file if the address to the LendingPoolCore contract has changed. If the address has changed you will have to re run this for every repay token type.

To run the script on mainnet

  • Enter npm run approve mainnet

To run the script on mainnet

  • Enter npm run approve

Run The Liquidator

Now that you have set up the config.json file and approved AAVE's LendingPoolCore contract to spend your funds you can start the liquidator.
Simply run the following command to start

For mainnet

  • Enter npm start mainnet

For Ropsten

  • Enter npm start

The liquidator is now live and awaiting the address you're monitoring to reach a health factor below 1!