Liquity V1 (liquity-v1)

Decentralized borrowing protocol offering interest-free loans against ETH collateral. Issues LUSD stablecoin with minimum 110% collateral ratio.

What it offers

closeTrove: Close an existing Trove (repay all debt and withdraw collateral)
repayLUSD: Repay LUSD debt on an open Trove
openTrove: Open a new Trove by depositing ETH and borrowing LUSD
adjustTrove: Adjust Trove collateral and/or debt

Interest-free loans with one-time borrowing fee (0.5% - 5%)
Minimum collateral ratio: 110%. Below this, Trove can be liquidated
Hint addresses (upperHint, lowerHint) optimize sorted trove list insertion - use Liquity frontend SDK to compute
Minimum debt: 2000 LUSD (including 200 LUSD gas reserve)
closeTrove requires repaying all debt including the 200 LUSD gas reserve

On Ethereum, LiquityV1 is a namespace: its contracts need no import.

function main() {
  // Ethereum's borrowerOperations, `0x24179CD81c9e782A4096035f7eC97fB8B783e007`.
  require(LiquityV1.BorrowerOperations != 0);
}

Chain	Contract	Address	In a program
Ethereum	borrowerOperations	`0x24179CD81c9e782A4096035f7eC97fB8B783e007`	`LiquityV1.BorrowerOperations`
Ethereum	lusd	`0x5f98805A4E8be255a32880FDeC7F6728C6568bA0`	`LiquityV1.Lusd`

import BorrowerOperationsABI from "./protocols/liquity-v1/BorrowerOperationsABI.json"; Speaks for: borrowerOperations.

openTrove(uint256 _maxFeePercentage, uint256 _LUSDAmount, address _upperHint, address _lowerHint) payable
closeTrove()
adjustTrove(uint256 _maxFeePercentage, uint256 _collWithdrawal, uint256 _LUSDChange, bool _isDebtIncrease, address _upperHint, address _lowerHint) payable
repayLUSD(uint256 _LUSDAmount, address _upperHint, address _lowerHint)