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Version: SDK V2

Integration

To use the full potential of the Biconomy Smart Account you will need an instance of a Bundler and Paymaster. The Biconomy SDK provides you with access to all of this. Below is a basic installation and integration for smart accounts in your code.

Installation​

First, install the required packages for initializing the Smart Account.


npm install @biconomy/account @biconomy/bundler @biconomy/paymaster @biconomy/common @biconomy/core-types @biconomy/modules

Integration Example​


import { BiconomySmartAccountV2, DEFAULT_ENTRYPOINT_ADDRESS } from "@biconomy/account"
import { ECDSAOwnershipValidationModule, DEFAULT_ECDSA_OWNERSHIP_MODULE } from "@biconomy/modules";
import { ChainId } from "@biconomy/core-types"
import { IBundler, Bundler } from '@biconomy/bundler'
import { IPaymaster, BiconomyPaymaster } from '@biconomy/paymaster'

  // create instance of bundler
  const bundler: IBundler = new Bundler({
    //https://dashboard.biconomy.io/ get bundler urls from your dashboard
    bundlerUrl: "",    
    chainId: ChainId.POLYGON_MUMBAI,
    entryPointAddress: DEFAULT_ENTRYPOINT_ADDRESS,
  })


  // create instance of paymaster
  const paymaster: IPaymaster = new BiconomyPaymaster({
    //https://dashboard.biconomy.io/ get paymaster urls from your dashboard
    paymasterUrl: ""
  })

  // instance of ownership module 
  const ownerShipModule = await ECDSAOwnershipValidationModule.create({
    signer: {}, // ethers signer object
    moduleAddress: DEFAULT_ECDSA_OWNERSHIP_MODULE
  })

  const biconomyAccount = await BiconomySmartAccountV2.create({
    chainId: ChainId.POLYGON_MUMBAI, //or any chain of your choice
    bundler: bundler, // instance of bundler
    paymaster: paymaster, // instance of paymaster
    entryPointAddress: DEFAULT_ENTRYPOINT_ADDRESS, //entry point address for chain
    defaultValidationModule: ownerShipModule, // either ECDSA or Multi chain to start
    activeValidationModule: ownerShipModule // either ECDSA or Multi chain to start
  })
  const address = await biconomySmartAccount.getAccountAddress()

info

Make sure to call both create methods from an async function!

Regardless of what frontend framework you may use these steps for creating a smart account will remain the same. See our tutorials for in depth integrations of the smart account.