Abra Liquidation Bot

Rust implementation of an abracadabra liquidator

Prerequisites

• Rust
• Foundry (optional to test & deploy new contracts)

Wallet

This is an immature software, only use with wallet with smaller ETH amount.

How to run

make build-release

• create .env from .env.example and fill the necessary endpoints. RPC_URL is the current chain websocket rpc and RPC_URL_SEND is the http rpc endpoint to send the transaction.
• launch_one.sh and launch_all.sh contains examples how to run the bot, modify and adapt at will.
• each bot process are isolated instance and corresponding to one cauldron listener and liquidator using it's own parameters.
• full archives nodes needs to be used to properly work

Improvement

The bot needs a lot of improvements and polishing:

TODO

• Everytime the bot is started, it's fetching previous blocks to build a in-memory database of user's positions. It should be cached locally and incrementaly only fetch the newer block when initialized.
• Support 0x swappers
• Having module so that cauldron's specific features are handled properly. For example, with GLP cauldron's it needs to use a Lens contract to resolve the best asset to burn GLP to and use it to build the 0x api request.
• Support cook based liquidation, where the master contract is approved/disapproved using a signature instead of approving the master contract globally.
• Better code architecture divided in module
• Passing less parameters and instead having a struct accross the multiple functions
• Better way to handle launching the bots
• Support for better profitability checks. Current bot state is making very minor checks for profitability, like the MIN_BORROW_PART part of the configuration which ignores user positions that are inferior to the value.
• Telegram/Discord notifications handling

Bugs / issues

• Revise why sending a transaction using web socket fails and find a way to only use websocket or http so it's simpler to handle.
• Something the gas estimate pass but the transactions fails, spending gas.
• The bot can drain all your wallet ETH as it doesn't have any support for profitability checks and killswitch when something goes wrong.