Vault Craft - Safe ERC-4626 LTV Vault Helpers

A collection of Solidity helper contracts that provide safe, slippage-protected operations for ERC-4626 tokenized vaults and collateral vaults.

Safe ERC-4626 Helpers

Project provides the helper contracts that wrap ERC-4626 vault operations with built-in slippage protection and detailed error reporting:

• Safe4626Helper: For standard ERC-4626 vault operations with try/catch error handling and slippage protection
• Safe4626CollateralHelper: For collateral-specific ERC-4626 vault operations with try/catch error handling and slippage protection

Flash Loan Helpers

Flash loan helpers that enable minting and redeeming LTV vault shares using flash loans, reducing the upfront capital requirements for users:

• FlashLoanMintHelperWstethAndWeth: Enables minting LTV vault shares using a flash loan. The helper:

  • Takes a flash loan of WETH from Morpho
  • Converts WETH to stETH and wraps it to wstETH
  • Uses wstETH as collateral (combining flash loan collateral with user-provided collateral)
  • Mints shares in the LTV vault via executeLowLevelRebalanceShares
  • Repays the flash loan
  • Allows users to mint shares with minimal upfront capital by leveraging the flash loan

• FlashLoanRedeemHelperWstethAndWeth: Enables redeeming LTV vault shares using a flash loan and Curve exchange. The helper:

  • Takes a flash loan of WETH from Morpho
  • Redeems shares from the LTV vault via executeLowLevelRebalanceShares
  • Unwraps wstETH collateral to stETH
  • Swaps stETH for ETH via Curve exchange
  • Wraps ETH to WETH
  • Repays the flash loan and sends remaining WETH to the user (if whitelisted)
  • Includes slippage protection for the Curve swap

Deployed Addresses

Mainnet

Name	Address
Safe4626Helper	0xb79baeb8eed4d53f040dfea46703812bbd0a1d9e
Safe4626CollateralHelper	0x25cd7dc2ffb7c453241a8c530e73c34bd642809c
FlashLoanMintHelperWstethAndWeth	0x2f5636d96ed34cd9f3eb3ab5b657175a36408645
FlashLoanRedeemHelperWstethAndWeth	0xa5836756b1d5db03dfccbafc4083a1e675a1f644

Sepolia

Contract	Address
Safe4626CollateralHelper	0x25cd7dc2ffb7c453241a8c530e73c34bd642809c
Safe4626Helper	0xb79baeb8eed4d53f040dfea46703812bbd0a1d9e
GhostMintHelper	0x169d36086e2a68062ed36bac5e0e733c5f0b872a
GhostRedeemHelper	0x5f3eb9daef690364c2539b8148faa421b60427b2

Security Audit

These contracts have undergone a security audit by Oxorio:

• Oxorio: Vault Craft Security Audit Report

Links

• Website: LTV
• Protocol implementation: GitHub Repository
• Documentation: Protocol Documentation
• Twitter: @ltvprotocol