Ethereum: Implementing Safe Tx Builder in Custom network safe-infrastructure

Implementing a Safe Tx Builder in Custom Ethereum Network Infrastructure

As users of the Safe wallet, you are no stranger to managing your Ethereum assets with care. However, navigating the complex web of transaction building and sending funds across networks can be daunting, even for experienced users. One significant challenge is finding an accessible and user-friendly interface for implementing safe transactions.

In this article, we will explore how to implement a Safe Tx Builder within our custom network infrastructure, ensuring seamless and secure transactions across all supported Ethereum networks.

The Current State of Transaction Building

Currently, the transaction building process in Safe requires users to navigate the web UI or manually copy and paste the transaction details from another wallet. This can be time-consuming, error-prone, and may not provide the level of security and protection that Safe users expect.

Solution Overview: Implementing a Custom Network Safe-Infrastructure

To address this issue, we will implement a custom network-safe infrastructure for transaction building in our Safe app. We will leverage OpenZeppelin’s [Safe]( library to provide an accessible and secure way to build safe transactions.

Step 1: Setting up the Custom Network

First, we need to set up a custom network with multiple signers and a shared private key. This will enable us to implement a decentralized transaction building process that can be accessed by all users on the network.

Here’s an example of how to create a custom network in Safe:

import { ethers } from 'ethers';


const networkName = 'MyCustomNetwork';

const networkId = 12345;


const network = new ethers.Net(networkName);


const signer = await ethers.getSigner();

Step 2: Implementing the Tx Builder

Next, we’ll implement a Safe Tx Builder within our app that provides users with an accessible and user-friendly interface for building safe transactions. We will use a combination of Web3 libraries (e.g., @ethersproject/web3-accounts) to interact with the Ethereum network.

Here’s an example of how to create a simple transaction builder in our Safe app:

import { ethers } from 'ethers';

import { Signer } from '@ethersproject/signer';

import Web3 = require('@ethersproject/web3-accounts');


const txBuilder = (signer: Signer, recipientAddress?: string) => {

  const options = {

    gasLimit: '2000000',

    gasPrice: ethers.utils.toWei('20', 'gwei'),

  };


  return new ethers.Transactions()

    .add(

      signer,

      recipientAddress,

      transactionDetails

    )

    .signAndConfirm(options);

};


const transactionDetails = {

  from: signer.address,

  to: recipientAddress,

};

Step 3: Integrating the Tx Builder with Safe

Finally, we’ll integrate our custom network-safe infrastructure for transaction building into the Safe app. We will create a new feature page within our app that allows users to build safe transactions using our tx builder.

Here’s an example of how to implement this integration in our Safe app:

“`javascript

import { useEffect } from ‘react’;

import { ethers } from ‘ethers’;

import Web3 = require(‘@ethersproject/web3-accounts’);

const TransactionBuilderPage = () => {

const [transactionBuilder, setTransactionBuilder] = useState(false);

const [txDetails, setTxDetails] = useState({});

useEffect(() => {

const signer = await ethers.getSigner();

const network = new ethers.Net(‘MyCustomNetwork’);

const transactionBuilder = (signer: Signer, recipientAddress?: string) => {

// …

};

setTransactionBuilder(

() =>

txBuilder(signer, recipientAddress)

.then((tx) => ({

tx,

txHash: tx.