Smart Accounts

Smart Accounts enable Account Abstraction (ERC-4337) for your users, allowing features like gas sponsorship (paymasters), batched transactions, and session keys. Smart account support is configured in your Web3Auth Dashboard and is automatically applied when you use showWalletUI or request.

info

Smart Account configuration is managed at the project level in the Web3Auth Dashboard. The SDK automatically retrieves the configuration during initialize().

Wallet Services Configuration

You can customize the wallet UI behavior for smart account flows using walletServicesConfig in Web3AuthOptions.

WalletServicesConfig

Parameter	Description
confirmationStrategy?	Controls how transaction confirmations are presented. Accepts ConfirmationStrategy as a value. Default is ConfirmationStrategy.DEFAULT.
whiteLabel?	Optional whitelabel configuration to apply specifically to the wallet services UI. Accepts WhiteLabelData as a value. When set, it is merged with the project-level whitelabel config.

ConfirmationStrategy

Value	Description
POPUP	Shows transaction confirmations in a popup window.
MODAL	Shows transaction confirmations in a modal overlay.
AUTO_APPROVE	Automatically approves transactions without showing a confirmation.
DEFAULT	Uses the platform default confirmation behavior.

Interface

data class WalletServicesConfig(
    val confirmationStrategy: ConfirmationStrategy? = ConfirmationStrategy.DEFAULT,
    var whiteLabel: WhiteLabelData? = null
)

enum class ConfirmationStrategy {
    @SerializedName("popup")
    POPUP,
    @SerializedName("modal")
    MODAL,
    @SerializedName("auto-approve")
    AUTO_APPROVE,
    @SerializedName("default")
    DEFAULT
}

Usage

val web3Auth = Web3Auth(
  Web3AuthOptions(
    clientId = "YOUR_WEB3AUTH_CLIENT_ID",
    web3AuthNetwork = Web3AuthNetwork.SAPPHIRE_MAINNET,
    redirectUrl = "YOUR_APP_SCHEME://auth",
    walletServicesConfig = WalletServicesConfig(
      confirmationStrategy = ConfirmationStrategy.MODAL
    )
  ),
  this
)

Using Smart Account Operations

Once smart accounts are enabled in your dashboard, you can use the request method to send user operations. See the request page for full details and examples.

Supported Smart Account Methods

Method	Description
eth_sendUserOperation	Send a user operation for account abstraction.
eth_estimateUserOperationGas	Estimate gas for a user operation.
wallet_showUserOperation	Display user operation details in the wallet UI.

Example

val userOp = JsonObject().apply {
    addProperty("sender", smartAccountAddress)
    addProperty("nonce", "0x0")
    addProperty("initCode", "0x")
    addProperty("callData", encodedCallData)
    addProperty("callGasLimit", "0x5208")
    addProperty("verificationGasLimit", "0x5208")
    addProperty("preVerificationGas", "0x5208")
    addProperty("maxFeePerGas", "0x3b9aca00")
    addProperty("maxPriorityFeePerGas", "0x3b9aca00")
    addProperty("paymasterAndData", "0x")
    addProperty("signature", "0x")
}

val params = JsonArray().apply {
    add(userOp)
}

val userOpCompletableFuture = web3Auth.request(
    "eth_sendUserOperation",
    requestParams = params
)

userOpCompletableFuture.whenComplete { result, error ->
    if (error == null) {
        Log.d("UserOp Hash", result.toString())
    } else {
        Log.d("UserOp Error", error.message ?: "Failed to send user operation")
    }
}

tip

The bundler and paymaster configuration is automatically handled by the Web3Auth Dashboard. You do not need to provide these URLs manually in your Android code.