Upgrading to EIP-7702

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Overview

• 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

• A properly initialized Portal client
• An active wallet on a supported network (see Create a wallet)
• Understanding of EVM Account Type concepts
• You fund the Upgrade Sponsor address with native tokens for the target chain in the Portal Dashboard

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Checking Wallet Status

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');
}

• 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

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');
}

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

• 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)

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Supported Networks

• Monad Testnet (eip155:10143)

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Next Steps

• Learn about signing transactions
• Explore Portal API methods
• Review EVM Account Type concepts
• Check out wallet lifecycle management