Track Health Factor

Learn how to track users health factors on Morpho, on-chain via a Smart Contract & off-chain via ethers.js.

Morpho-Aave

V3: solidity

/// IMPORTS ///

import {Types} from "@morpho-aave-v3/libraries/Types.sol";
import {DataTypes} from "@aave-v3-core/protocol/libraries/types/DataTypes.sol";

/// FUNCTION ///
contract Snippets {
    using MarketLib for Types.Market;

    IMorpho public immutable morpho;

    constructor(address morphoAddress) {
        morpho = IMorpho(morphoAddress);
    }
    
    /// @notice Returns the health factor of a given user.
    /// @param user The user of whom to get the health factor.
    /// @return The health factor of the given user (in wad).
    function healthFactor(address user) public view returns (uint256) {
        Types.LiquidityData memory liquidityData = morpho.liquidityData(user);

        return liquidityData.debt > 0 ? liquidityData.maxDebt.wadDiv(liquidityData.debt) : type(uint256).max;
    }

V3: ethers.js

/// IMPORTS ///

import { BigNumber, providers } from "ethers";
import { PercentMath, WadRayMath } from "@morpho-labs/ethers-utils/lib/maths";


/// FUNCTION ///
/**
 * This function compute the health factor on a specific user and returns the result.
 *
 * @param user The user address.
 * @param provider A provider instance
 *
 * @returns The health factor in _WAD_ units.
 */
export const getUserHealthFactor = async (user: string, provider: providers.BaseProvider) => {
  const { morphoAaveV3 } = getContracts(provider);
  const { debt, maxDebt } = await morphoAaveV3.liquidityData(user);

  return WadRayMath.wadDiv(maxDebt, debt);
};

V2: ethers.js

/// FUNCTION ///

const lens = new ethers.Contract("0x507fA343d0A90786d86C7cd885f5C49263A91FF", LensAbi, signer);

/**
 * This function compute the health factor on a specific user and returns the result.
 *
 * @param userAddress The user address.
 * @param provider A provider instance
 *
 * @returns The health factor in _WAD_ units.
 */
async function getUserHealthFactor(userAddress) {
   const hf = await lens.getUserHealthFactor(userAddress);
 return hf; 
}