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Depositing ETH

Call deposit() on MakxYieldVault with ETH: 
vault.deposit{ value: amount }()
  1. The vault collects any pending interest from YieldPad — share price is updated before your deposit.
  2. Protocol feeBps is deducted from your ETH (if non-zero). Fee goes to protocol owner.
  3. You receive METH shares proportional to your contribution relative to totalAssets before the deposit.
There is no minimum deposit size (beyond gas costs).

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Withdrawal process

Withdrawal is a two-step process with a mandatory cooldown period. This protects against forced emergency LP liquidations and ensures the vault does not need to liquidate active positions just to service withdrawals.

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Step 1 — Request withdrawal

vault.requestWithdrawal(uint256 shares)
Locks in the number of shares you want to redeem. Starts the cooldown timer (withdrawalCooldown seconds). You can only have one active withdrawal request at a time per address.

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Step 2 — Redeem after cooldown

vault.redeem()
Available only after requestedAt + withdrawalCooldown has elapsed.
  1. Collects pending interest from YieldPad.
  2. Burns your shares and sends you ETH at the current share price.
  3. ETH out is capped at the vault’s idle balance — bonded ETH is not immediately available.
Partial redemption: If the vault has insufficient idle ETH, you receive what is available. The remainder of your request stays pending and you can call redeem() again later.

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Cancel a pending request

vault.cancelWithdrawal()
Cancels your pending withdrawal request. Your shares stay in your wallet.

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Why a cooldown?

The vault lends ETH to active token launches. That ETH (bondAmount) is locked in Uniswap V4 LP positions and only unlocks when a launch is liquidated or the bond is repaid. If instant withdrawals were allowed, a single large depositor could force emergency liquidations of active launches — harming creators and disrupting the protocol. The cooldown gives the vault time to accumulate idle ETH organically from:
  • New deposits from other users
  • Bonds repaid by token creators
  • Interest payments (which increase share price, not idle ETH directly)
  • Liquidation proceeds

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Available vs. bonded ETH

ETH typeAvailable for withdrawal
Idle ETH (vault balance)Yes, immediately after cooldown
Bonded ETH (lent to launches)No — unlocks only on repayment or liquidation
Check idle ETH: address(vault).balance Check bonded ETH: vault.totalBondedETH() Check total assets: vault.totalAssets() (both combined)

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Protocol fee on deposit and redeem

The vault’s feeBps (max 1000 = 10%) is deducted from both deposits and redemptions. The fee goes to the protocol owner. Fee of 0 is also valid (no fee). 
ethIn after fee  = msg.value × (10_000 - feeBps) / 10_000
ethOut after fee = grossEthOut × (10_000 - feeBps) / 10_000