Account Kit

Appearance

@alchemy/aa-core ​

This package contains the core interfaces and components for interacting with 4337 infrastructure. The primary interfaces that it exports are the SmartAccountClient and SmartContractAccount.

The SmartAccountClient is an EIP-1193 compliant Provider that wraps JSON RPC methods. With this Client, you can submit User Operations to RPC providers, estimate gas, configure a Paymaster, send standard JSON RPC requests, and more. It is not opinionated about which RPC provider you are using and is configurable to work with any RPC provider. Because it implements EIP-1193, it can be used with any web3 library.

The SmartContractAccount interface defines how you would interact with your Smart Contract Account. Any object that extends SmartContractAccount may also expose additional methods that allow its use with a SmartAccountClient to provide ergonomic utilities for building and submitting User Operations.

Getting started ​

To get started, first install the package:

bash
yarn add @alchemy/aa-core
bash
npm i -s @alchemy/aa-core
bash
pnpm i @alchemy/aa-core

Then, you can create a client like so:

ts
import { createMultiOwnerModularAccount } from "@alchemy/aa-accounts";
import {
  LocalAccountSigner,
  SmartAccountSigner,
  createSmartAccountClient,
  polygonMumbai,
} from "@alchemy/aa-core";
import { http } from "viem";

const chain = polygonMumbai;
const signer: SmartAccountSigner = LocalAccountSigner.mnemonicToAccountSigner(
  "YOUR_OWNER_MNEMONIC"
);
const rpcTransport = http("https://polygon-mumbai.g.alchemy.com/v2/demo");

export const smartAccountClient = createSmartAccountClient({
  transport: rpcTransport,
  chain,
  account: await createMultiOwnerModularAccount({
    transport: rpcTransport,
    chain,
    signer,
  }),
});