3Pool Convex Meta Vault

Abstract ERC-4626 vaults with DAI, USDC or USDT asset invested in Curve's 3Pool, and then the 3Pool LP token (3Crv) is invested in an underlying 3Pool-based (3Crv) Meta Vault.
Capabilities
​ERC-4626 compliant tokenized vault.
​ERC-20 compliant token.
Invests DAI, USDC or USDT in Curve's 3Pool and then invests the 3Crv LP token in an underlying ERC4626 vault.
Sandwich attack protection on ERC4626 operations deposit, mint, withdraw and redeem.
Vault operations are pausable by the Governor.
Emergency asset recovery by the Governor. This will be removed after 2 months.
Vault configuration is controlled by a protocol Governor. This includes:
Setting the slippage limits for mint, deposit, redeem and withdraw.
Initially the Governor can upgrade the contracts via a proxy without a time delay. After 6 weeks, this will be changed to a one week time delay.
Contract Interface
See the metavaults github repository for contract diagrams and process diagrams.
See General ERC-4626 Vault Interface for the standard ERC-4626 functions.
Variables
BASIS_SCALE
uint256 BASIS_SCALE
Basis points calculation scale. 100% = 10000. 1% = 100
redeemSlippage
uint256 redeemSlippage
Redeem slippage in basis points i.e. 1% = 100
depositSlippage
uint256 depositSlippage
Deposit slippage in basis points i.e. 1% = 100
withdrawSlippage
uint256 withdrawSlippage
Withdraw slippage in basis points i.e. 1% = 100
mintSlippage
uint256 mintSlippage
Mint slippage in basis points i.e. 1% = 100
assetScale
uint256 assetScale
Scale of one asset. eg 1e18 if asset has 18 decimal places.
assetFromUsdScale
uint256 assetFromUsdScale
Converts USD value with 18 decimals back down to asset/vault scale. For example, convert 18 decimal USD value back down to USDC which only has 6 decimal places. Will be 1 for DAI, 1e12 for USDC and USDT.
threeCrvTokenScale
uint256 threeCrvTokenScale
Scale of the Curve.fi 3Crv token. 1e18 = 18 decimal places
metaVault
contract IERC4626Vault metaVault
Address of the underlying Meta Vault that implements ERC-4626.
assetPoolIndex
uint256 assetPoolIndex
The index of underlying asset DAI, USDC or USDT in 3Pool. DAI = 0, USDC = 1 and USDT = 2
Functions
liquidateVault
function liquidateVault(uint256 minAssets) external
Governor liquidates all the vault's assets and send to the governor. Only to be used in an emergency. eg whitehat protection against a hack.
Parameters
Name
Type
Description
minAssets
uint256
Minimum amount of asset tokens to receive from removing liquidity from the Curve 3Pool. This provides sandwich attack protection.
resetAllowances
function resetAllowances() external
Approves Curve's 3Pool contract to transfer assets (DAI, USDC or USDT) from this vault. Also approves the underlying Meta Vault to transfer 3Crv from this vault.
setRedeemSlippage
function setRedeemSlippage(uint256 _slippage) external
Governor function to set redeem slippage.
Parameters
Name
Type
Description
_slippage
uint256
Redeem slippage to apply as basis points i.e. 1% = 100
setDepositSlippage
function setDepositSlippage(uint256 _slippage) external
Governor function to set deposit slippage.
Parameters
Name
Type
Description
_slippage
uint256
Deposit slippage to apply as basis points i.e. 1% = 100
setWithdrawSlippage
function setWithdrawSlippage(uint256 _slippage) external
Governor function to set withdraw slippage.
Parameters
Name
Type
Description
_slippage
uint256
Withdraw slippage to apply as basis points i.e. 1% = 100
setMintSlippage
function setMintSlippage(uint256 _slippage) external
Governor function to set mint slippage.
Parameters
Name
Type
Description
_slippage
uint256
Mint slippage to apply as basis points i.e. 1% = 100
​

Name	Type	Description
minAssets	uint256	Minimum amount of asset tokens to receive from removing liquidity from the Curve 3Pool. This provides sandwich attack protection.

Name	Type	Description
_slippage	uint256	Redeem slippage to apply as basis points i.e. 1% = 100

Name	Type	Description
_slippage	uint256	Deposit slippage to apply as basis points i.e. 1% = 100

Name	Type	Description
_slippage	uint256	Withdraw slippage to apply as basis points i.e. 1% = 100

Name	Type	Description
_slippage	uint256	Mint slippage to apply as basis points i.e. 1% = 100

Last modified 4mo ago