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Portal’s Flutter SDK provides EVM Account Type management through the portal.evmAccountType API. This enables checking wallet account types and upgrading EOA wallets to EIP-7702 on supported EVM chains.

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Overview

The EVM Account Type functionality allows you to:
  • Check wallet status to determine the current account type
  • Upgrade to EIP-7702 to enable ejecting the Portal wallet’s EOA private key

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Prerequisites

Before using EVM Account Type operations, ensure you have:

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Checking Wallet Status

Use getStatus to check the current account type of your wallet. The response includes both the account status and metadata about the wallet addresses. 
try {
  final chainId = 'eip155:10143'; // Monad Testnet

  final response = await portal.evmAccountType.getStatus(chainId: chainId);

  print('Status: ${response.data.status}');
  print('EOA Address: ${response.metadata.eoaAddress}');

  if (response.metadata.smartContractAddress != null) {
    print('Smart Contract Address: ${response.metadata.smartContractAddress}');
  }

  if (response.data.status == 'EIP_155_EOA') {
    print('Can upgrade to EIP-7702');
  } else if (response.data.status == 'EIP_7702_EOA') {
    print('Already upgraded');
  } else {
    print('Cannot upgrade');
  }
} catch (e) {
  print('Failed to get account status: $e');
}
Response (EvmAccountTypeStatusResponse):
  • data.status: One of EIP_155_EOA, SMART_CONTRACT, or EIP_7702_EOA
  • metadata.eoaAddress: The EOA address associated with the wallet
  • metadata.smartContractAddress: Your smart contract wallet address (optional, may be null for EOA-only accounts)
  • metadata.chainId: The chain identifier

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Upgrading to EIP-7702

Use upgradeTo7702 to upgrade an EOA wallet to EIP-7702. This method automatically handles the entire upgrade process, including gas subsidization, and returns the transaction hash directly. 
try {
  final chainId = 'eip155:10143'; // Monad Testnet

  // Upgrade to EIP-7702
  final txHash = await portal.evmAccountType.upgradeTo7702(chainId: chainId);
  print('Upgrade done! TX: $txHash');

  // Verify final status
  final status = await portal.evmAccountType.getStatus(chainId: chainId);
  print('Final Status: ${status.data.status}');

  if (status.data.status == 'EIP_7702_EOA') {
    print('Successfully upgraded to EIP-7702!');
  }
} on PortalException catch (e) {
  print('Upgrade error: ${e.message}');
} catch (e) {
  print('Upgrade failed: $e');
}
What happens during the upgrade:
  1. Chain validation: Verifies the chain uses the eip155 namespace
  2. Status check: Confirms the wallet is currently an EIP_155_EOA
  3. Authorization building: Creates the EIP-7702 authorization list
  4. Signature: Signs the authorization hash with your wallet
  5. Transaction submission: Submits the subsidized upgrade transaction (gas is paid by Portal)
  6. Transaction hash: Returns the on-chain transaction hash
Response: The method returns a String containing the transaction hash of the submitted upgrade transaction. Error handling: The method throws a PortalException with the following error codes:
  • NOT_INITIALIZED: Portal was not initialized before calling the method
  • EVM_ACCOUNT_TYPE_UPGRADE_ERROR: The upgrade failed (e.g., wallet is not an EIP_155_EOA, unsupported chain, or transaction submission failed)
The upgrade process is irreversible per wallet. Once upgraded to EIP-7702, the wallet cannot be reverted to a standard EOA on that chain.

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Supported Networks

EVM Account Type upgrades are currently available on:
  • Monad Testnet (eip155:10143)
For a complete list of supported chains, reach out to the Portal team.

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Next Steps