vaultDeposit

Deposit assets into the Zyfai Vault. Currently only supports USDC on Base chain.

Vault vs Safe SubAccount

The Vault is different from the Safe subaccount. The Vault is a shared contract where users deposit assets and receive shares. The Safe is a personal smart wallet for automated yield optimization. The vault is redirecting the deposited assets to one globally shared safe subaccount for automated yield optimization. Full architecture documentation

Signature

vaultDeposit(
  amount: string,
  asset?: VaultAsset,
  chainId?: SupportedChainId
): Promise<VaultDepositResponse>

Parameters

Parameter	Type	Required	Description
amount	string	✅	Amount to deposit in human readable format (e.g., "100" for 100 USDC)
asset	VaultAsset	❌	Asset to deposit (default: "USDC")
chainId	SupportedChainId	❌	Chain ID (default: 8453 - Base)

Returns

Deposit transaction result with transaction hash

Return Type

interface VaultDepositResponse {
  success: boolean;
  txHash: string;
  amount: string;
  asset: string;
  vaultAddress: string;
}

Example

// Connect wallet first
await sdk.connectAccount(walletClient, 8453);

// Deposit 100 USDC into the vault
const result = await sdk.vaultDeposit("100", "USDC");
console.log("Deposited:", result.txHash);
console.log("Vault address:", result.vaultAddress);

How It Works

1. Checks allowance: Verifies if the vault has permission to spend your USDC
2. Approves if needed: If allowance is insufficient, sends an approval transaction
3. Deposits: Transfers USDC to the vault and mints shares to your wallet
4. Waits for confirmation: Returns after the transaction is confirmed

Notes

• Wallet must be connected via connectAccount() before calling
• The amount is in human readable format (not wei/smallest units)
• You receive vault shares in return, representing your stake in the vault
• Use getVaultShares to check your share balance
• To withdraw, use vaultWithdraw