abstractjs 🚀

The Biconomy SDK is your all-in-one toolkit for building decentralized applications (dApps) with ERC4337 Account Abstraction and Smart Accounts. It is designed for seamless user experiences and offers non-custodial solutions for user onboarding, sending transactions (userOps), gas sponsorship and much more.

📚 Table of Contents

• SDK 🚀

  • 📚 Table of Contents
  • 🛠️ Quickstart
    • Installation
    • Testing
  • 📄 Documentation and Resources
  • 💼 Examples
  • License
  • Connect with Biconomy 🍊

🛠️ Quickstart

Installation

1. Add the package:

bun add @biconomy/abstractjs viem @rhinestone/module-sdk

2. Basic Usage:

import { toMultichainNexusAccount, mcUSDC, createMeeClient } from "@biconomy/abstractjs";
import { base, optimism } from "viem/chains";
import { privateKeyToAccount } from "viem/accounts";
import { http } from "viem";

const eoaAccount = privateKeyToAccount(`0x${process.env.PRIVATE_KEY}`)
const mcNexus = await toMultichainNexusAccount({
  signer: eoaAccount,
  chainConfigurations: [
    {
      chain: base,
      transport: http(),
      version: getMEEVersion(DEFAULT_MEE_VERSION)
    },
    {
      chain: optimism,
      transport: http(),
      version: getMEEVersion(DEFAULT_MEE_VERSION)
    }
  ]
})
const meeClient = await createMeeClient({ account: mcNexus })

const quote = await meeClient.getQuote({
  instructions: [{
    calls: [{ to: "0x...", value: 1n, gasLimit: 100000n }],
    chainId: base.id
  }],
  feeToken: {
    address: mcUSDC.addressOn(base.id),
    chainId: base.id
  }
})

// Execute the quote and get back a transaction hash
// This sends the transaction to the network
const { hash } = await meeClient.executeQuote({ quote })

Testing

Prerequisites:

• Node.js (v22 or higher)
• Bun package manager
• Foundry
• Yarn (must be 1.1.x, not 3.x). This is necessary because the nexus contracts repo relies on yarn.

Setup:

bun install --frozen-lockfile

Funding test accounts:

# Fund test nexus accounts with native tokens and USDC, using a funded PRIVATE_KEY master account
bun run fund:nexus

Running Tests:

# Run all tests
bun run test

# Run tests in watch mode for a specific subset of tests (by test description)
bun run test:watch -t=mee

For detailed information about the testing framework, network configurations, and debugging guidelines, please refer to our Testing Documentation.

📄 Documentation and Resources

For a comprehensive understanding of our project and to contribute effectively, please refer to the following resources:

• Biconomy Documentation
• Biconomy Dashboard
• API Documentation
• Contributing Guidelines: Learn how to contribute to our project, from code contributions to documentation improvements.
• Code of Conduct: Our commitment to fostering an open and welcoming environment.
• Security Policy: Guidelines for reporting security vulnerabilities.
• Changelog: Stay updated with the changes and versions

License

This project is licensed under the MIT License. See the LICENSE file for details

Connect with Biconomy 🍊