Type Alias AssetTransferMethod

AssetTransferMethod: "permit" | "permit2" | "approve" | "erc7710"

Asset transfer method for scheme selection (x402-compatible).

"permit": EIP-3009 transferWithAuthorization (default)
"permit2": Uniswap Permit2 universal approval
"approve": Legacy approve + transferFrom
"erc7710": ERC-7710 smart account delegation