MakxYieldVault

Overview

MakxYieldVault is an ERC-20 contract that holds ETH and lends it to MakxYieldPad. Depositors receive METH shares. YieldPad borrows ETH for token launches and pays interest back. Interest raises the share price, benefiting all depositors proportionally. All interest accrual logic is owned by YieldPad — the vault simply receives ETH via repay() and depositInterest().

State

Variable	Type	Description
`yieldPad`	`address`	Address of the authorized MakxYieldPad
`totalBondedETH`	`uint256`	ETH currently lent out (accounting marker, not physical balance)
`withdrawalCooldown`	`uint24`	Seconds between withdrawal request and redemption
`feeBps`	`uint256`	Protocol fee in BPS on deposit and redeem (max 1000)
`withdrawalRequests`	`mapping(address => WithdrawalRequest)`	Pending withdrawal requests

struct WithdrawalRequest {
    uint256 shares;
    uint48 requestedAt;
}

Depositor functions

`deposit()`

function deposit() external payable returns (uint256 shares)

Deposit ETH, receive METH shares. Calls collectInterest() on YieldPad first. Deducts feeBps if non-zero.

`requestWithdrawal(uint256 shares)`

function requestWithdrawal(uint256 shares) external

Starts the withdrawal cooldown. One active request per address.

`cancelWithdrawal()`

function cancelWithdrawal() external

Cancels a pending withdrawal request.

`redeem()`

function redeem() external nonReentrant returns (uint256 ethOut)

After cooldown: burns shares, sends ETH. Capped at idle vault balance — partial redemption possible. Deducts feeBps from output.

Lending interface (YieldPad only)

`borrow(uint256 amount)`

function borrow(uint256 amount) external onlyYieldPad

Lends ETH to YieldPad. Increments totalBondedETH. Reverts if amount > address(this).balance.

`repay()`

function repay() external payable onlyYieldPad

Receives ETH back from YieldPad (bond repayment or interest). Decrements totalBondedETH by msg.value.

View functions

`totalAssets()`

function totalAssets() public view returns (uint256)

Returns address(this).balance + totalBondedETH. This is the full ETH value backing all METH shares.

`sharePrice()`

function sharePrice() external view returns (uint256)

Returns ETH per METH share, scaled by 1e18. Returns 1e18 if supply is zero.

Owner functions

`configure(address _yieldPad, uint24 _withdrawalCooldown)`

Sets the authorized YieldPad address and withdrawal cooldown.

`setFeeBps(uint256 _feeBps)`

Sets the protocol fee on deposit/redeem. Capped at 1000 (10%).

Events

Event	Emitted when
`Deposited(user, ethAmount, shares)`	ETH deposited
`WithdrawalRequested(user, shares, requestedAt)`	Withdrawal request started
`WithdrawalCancelled(user)`	Request cancelled
`Redeemed(user, shares, ethOut)`	Shares redeemed for ETH
`Borrowed(amount)`	ETH lent to YieldPad
`Repaid(amount)`	ETH returned from YieldPad
`FeeBpsUpdated(feeBps)`	Protocol fee updated

Errors

Error	Condition
`ZeroAmount`	Zero ETH deposit or zero shares
`InsufficientShares`	Caller has fewer shares than requested
`InsufficientAvailableETH`	Vault idle balance too low to lend
`NoWithdrawalPending`	No active request to redeem or cancel
`CooldownNotElapsed`	Cooldown period not yet passed
`NotYieldPad`	Caller is not the authorized YieldPad
`TransferFailed`	ETH transfer reverted
`FeeTooHigh`	`feeBps` > 1000

​Overview

​State

​Depositor functions

​deposit()

​requestWithdrawal(uint256 shares)

​cancelWithdrawal()

​redeem()

​Lending interface (YieldPad only)

​borrow(uint256 amount)

​repay()

​View functions

​totalAssets()

​sharePrice()

​Owner functions

​configure(address _yieldPad, uint24 _withdrawalCooldown)

​setFeeBps(uint256 _feeBps)

​Events

​Errors