account_abstraction_alchemy

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.