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This guide shows you how to use Dynamic as a signer for Alchemy Smart Accounts.

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Install the sdk

By default, the latest version of the Dynamic SDK ships with Viem. If you need to use Ethers, please refer to this guide.
In this example, we are installing only the Ethereum connectors in order to keep bundle size light. If you need any others, you can find the references here.
npm i -s @dynamic-labs/sdk-react-core @dynamic-labs/ethereum

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Add Dynamic to your application

In order to use Dynamic, you should wrap your app with DynamicContextProvider at the highest possible level i.e. 
import { DynamicContextProvider } from '@dynamic-labs/sdk-react-core'
import { EthereumWalletConnectors } from '@dynamic-labs/ethereum'
import Home from './Home'

// Found in your Dynamic dashboard (https://app.dynamic.xyz/dashboard/developer/api)
const DYNAMIC_ENVIRONMENT_ID = 'XXXXX'

const App = () => {
  return (
    <div className="app">
      <DynamicContextProvider
        settings={{
          environmentId: DYNAMIC_ENVIRONMENT_ID,
          walletConnectors: [EthereumWalletConnectors],
        }}
      >
        <Home />
      </DynamicContextProvider>
    </div>
  )
}

export default App

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Create a SmartAccountSigner

Next, inside any component which is wrapped by the above DynamicContextProvider, use the useDynamicContext hook to fetch your provider, and create a SmartAccountSigner: 
import { WalletClientSigner, type SmartAccountSigner } from '@alchemy/aa-core'
import { useDynamicContext } from '@dynamic-labs/sdk-react-core'
import { isEthereumWallet } from '@dynamic-labs/ethereum'

// eslint-disable-next-line react-hooks/rules-of-hooks
const { primaryWallet } = useDynamicContext()

if (!isEthereumWallet(primaryWallet)) {
  throw new Error('This wallet is not a Ethereum wallet');
}

const dynamicProvider = await primaryWallet?.getWalletClient()

// a smart account signer you can use as an owner on ISmartContractAccount
export const dynamicSigner: SmartAccountSigner = new WalletClientSigner(
  dynamicProvider,
  'dynamic' // signer type
)

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Use it with Light Account

Let’s see it in action with aa-alchemy and LightSmartContractAccount from aa-accounts: 
import { AlchemyProvider } from '@alchemy/aa-alchemy'
import {
  LightSmartContractAccount,
  getDefaultLightAccountFactoryAddress,
} from '@alchemy/aa-accounts'
import { sepolia } from 'viem/chains'
import { dynamicSigner } from './dynamic'

const chain = sepolia

const provider = new AlchemyProvider({
  apiKey: 'ALCHEMY_API_KEY',
  chain,
}).connect(
  (rpcClient) =>
    new LightSmartContractAccount({
      chain,
      owner: dynamicSigner,
      factoryAddress: getDefaultLightAccountFactoryAddress(chain),
      rpcClient,
    })
)