Description:

account abstraction alchemy

ERC-4337: Account Abstraction, for usage with Alchemy Account Abstraction #

Read more about Alchemy account abstraction
Alchemy AA API documentation
Features #


Create private key signer


Create smart wallet


ABI Encoding/Decoding


Sent transactions with sponsored gas


Wait for transaction receipt


Getting started #
To get started, you need to add account_abstraction_alchemy to your project.

flutter pub add account_abstraction_alchemy

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Create Alchemy app and get your Alchemy API key from dashboard.
Create gas policy for created app, and get gas policy ID.
Usage #

// Import the package

import 'package:account_abstraction_alchemy/account_abstraction_alchemy.dart';

// Create EthPrivateKey from private key hex string
// it's up to you how you obtain the private key hex you can create random or
// use private key provided by web3auth for example
// created private key will be used to create "signer"

final privateKey = EthPrivateKey.fromHex(PRIVATE KEY HEX HERE);


// Setup network config
// Currently supporting ethereum mainnet, polygon, and sepolia testnet networks.

final network = NetworkConfigs.getConfig(
Network.sepolia,
AccountType.simple,
EntryPointVersion.v06,
"ALCHEMY-API-KEY-HERE",
"ALCHEMY-GAS-POLICY-ID-HERE");

// Generate salt

final salt = Uint256.fromHex(hexlify(
keccak256(EthereumAddress.fromHex(signer.getAddress()).addressBytes)));

// Create wallet factory
final SmartWalletFactory walletFactory = SmartWalletFactory(network, signer);

// Finally create simple smart account
final wallet = await walletFactory.createSimpleAccount(salt);
print('Wallet address: ${wallet?.address.hex}');

// Now you need send some sepolia eth to your newly created wallet address
// and send your first transaction

final recipient = EthereumAddress.fromHex('0x502FE2DCc50DfFec11317f26363fcb44D507D81C');
final amountWei = EtherAmount.inWei(BigInt.from(10000000000000000)); // 0.01 eth
// send it
final transaction = await wallet.send(recipient, amountWei);
// than we wait for receipt
final response = await transaction.wait();
// done, you can check transactions details on sepolia explorer
print(response!.receipt.transactionHash);
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Additional information #
This library designed to be used only with gas manager, to sponsor gas for transactions.
Important: if you want to send batch transactions use Light account type.
Currently supported entry point versions:

0.6

Currently supported smart accounts:

Simple (does not support batch transactions)
Light (supports batch transactions)

Tested on Android and Web platforms, but should work on all platforms.

License

For personal and professional use. You cannot resell or redistribute these repositories in their original state.

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