The first iteration of account abstraction from Dynamic uses ZeroDev and embedded wallets. This guide will walk you through settting up ZeroDev and Dynamic so that you can sponsor transactions on Polygon Mumbai.
For a working example using Dynamic v2 and ZeroDev v5, see our example repo: https://github.com/dynamic-labs/dynamic-zerodev-example

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Initial setup

1

ZeroDev Account

Sign up for a free account at https://dashboard.zerodev.app/ and create a project
Configure your project name and network
Note that the network you select in your ZeroDev project will be the network that the smart contract wallet is deployed on and cannot be changed without creating a new project. For this guide, we will be using Polygon Mumbai.
Copy your ZeroDev project id
2

Enable in Dynamic

In your Dynamic Dashboard, go to Configurations > EVM
And toggle on Polygon Mumbai and click Save
Now, go to Configurations > Account Abstraction
Enable ZeroDev and paste in your ZeroDev project id
3

Choose who gets a SCW

On the same configuration page as the step above, you’ll see there are two different types of configuration for issuing smart contract wallets (SCWs) in Dynamic - the wallet level and the user level.
  • Wallet level
Choose whether to issue SCWs to all wallets, or only to embedded wallets. Note that for the former, you will need to handle the UI and frontend yourself.
  • User level
Choose whether to issues SCWs to all your users (existing included next time they log in), or just new users.
4

Enable Dynamic Embedded wallets + Email

  • In your Dynamic Dashboard, go to Configurations > Email/Social Auth & Embedded Wallets
  • Enable Dynamic Embedded wallets and Enable Email sign up (optionally, Enable social sign up and configure oauth)
Note that we currently only create smart wallets for embedded wallets. You will see native web3 wallets in your Dynamic widget, and can still use one to sign in, but only new embedded wallets will have a smart wallet.
5

Render Dynamic

In your local React project, install the following packages:
  • @dynamic-labs/sdk-react-core
  • @dynamic-labs/ethereum-aa
  • @dynamic-labs/ethereum
  • @zerodev/sdk
Then import and add the ZeroDevSmartWalletConnectors and EthereumWalletConnectors to the walletConnectors prop on DynamicContextProvider.
If using ZeroDev v4, the minimum Dynamic SDK version you need to use is ^1.0.0. If using ZeroDev v5, the minimum Dynamic SDK version you need to use is ^2.0.0-alpha.8.
  import { DynamicContextProvider, DynamicWidget } from "@dynamic-labs/sdk-react-core";
  import { EthereumWalletConnectors } from "@dynamic-labs/ethereum";
  import { ZeroDevSmartWalletConnectors } from "@dynamic-labs/ethereum-aa";

  const App = () => (
    <DynamicContextProvider
      settings={{
        environmentId: "YOUR_ENVIRONMENT_ID",
        walletConnectors: [
          EthereumWalletConnectors,
          ZeroDevSmartWalletConnectors
        ],
      }}
    >
      <DynamicWidget />
    </DynamicContextProvider>
  )

  export default App;
Make sure to grab your Dynamic environment id from from the Dynamic Dashboard under Developer > SDK & API Keys, and replace it in the environmentID setting.
6

Set up a gas sponsorship rule

Now we will set up a basic gas sponsorship policy in the ZeroDev dashboardIn the Gas Policies tab, click on the button labeled “New” in the Project Policies section
Select “Amount” as the Type, “10” as the value and “Day” as the interval. This is saying that we will sponsor up to 10 MATIC total per day
Click Create Project Policy, and that’s it! Now start your app, log in and try sending some MATIC out. The Dynamic SDK will check if a transaction meets your gas policies and will automatically hide the gas in the transaction confirmation step if the gas is sponsored, if not the gas will be displayed.
Since you will be creating a brand new wallet when you log in, you will have to first send some MATIC to this address. You can access a free MATIC faucet here: https://mumbaifaucet.com/
7

Send a transaction

Run your app, and if you copied our snippet from earlier, you should see this basic pageClick Connect your wallet, enter your email and hit Continue. After pasting in your OTP, you are prompted to Set up a passkey.Go ahead and set up your passkey, and now you’re fully logged in! Next, we’re going to send a transaction. To do that, we will need some MATIC. Grab your wallet address by clicking on the Dynamic Widget, then click on the three dots next to your address and hit “Copy wallet address”. You can paste your address into free Polygon Mumbai faucet which will deposit some free test MATIC into your account. After doing so, if you refresh your app, you should see your balance update
Optionally, set up fiat onramp by following our guide here: https://docs.dynamic.xyz/fiat-onboarding/banxa
Now, send yourself some MATIC by clicking on the Send button in the Dynamic Widget. Enter 0.1 as the amount, and an addres of your choosing as the recipient, then hit Send now. You will see a screen like the following. Notice that there is no gas estimate field, because this transaction will be sponsored!Hit confirm, sign for the transaction with your passkey. Congratulations, you just sent a gas-sponsored transaction! If you take your smart wallet address and paste it into the Polygon Mumbai scanner, you will see your smart wallet and the transaction you just sent.

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Advanced Configuration

Now you are set up, you can utilize the full functionality of ZeroDev inside Dynamic - everything from session keys to gas policies. Learn more in the ZeroDev Docs.

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Using with Viem & Ethers

You can use viem or ethers with account abstraction to sign messages or send sponsored transaction with no extra configuration, it also works with our wagmi integration.

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Going Further

Once you’ve tested things out and want to deploy to a live network, you will need to do the following:
  1. Add your credit card to ZeroDev under Account Settings > Billing
  2. Create a new ZeroDev project and select a live network
  3. Copy your new ZeroDev project id and paste it into your Dynamic Dashboard a. We recommend using your Dynamic Sandbox environment for testing your testnet setup, and using your Dynamic Live environment for production.

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Examples

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Get smart wallet address vs signer address

The wallet connector will return your smart wallet address, that address will be used in the Dynamic UI and is the main address you will interact with. But you can fetch the signer address by using the wallet connector getEOAConnector and then fetching the address there. 
import { useEffect, useState } from "useEffect";
import {
  useDynamicContext,
  DynamicContextProvider,
  DynamicWidget,
} from "@dynamic-labs/sdk-react-core";
import {
  isZeroDevConnector,
  ZeroDevSmartWalletConnectors,
} from "@dynamic-labs/ethereum-aa";
import { EthereumWalletConnectors } from "@dynamic-labs/ethereum";

const SignerAddress = () => {
  const { primaryWallet } = useDynamicContext();
  const [signerAddress, setSignerAddress] = useState();

  useEffect(() => {
    if (!primaryWallet) {
      return;
    }

    const {
      connector,
      address, // This is your smart wallet address
    } = primaryWallet;

    if (!isZeroDevConnector(connector)) {
      return;
    }

    const signerConnector = connector.getEOAConnector();

    if (!signerConnector) {
      return;
    }

    // This is the signer address
    const [address] = signerConnector.fetchPublicAddress();

    setSignerAddress(address);
  }, [primaryWallet]);

  return <span>My Signer address: {signerAddress}</span>;
};

const App = () => (
  <DynamicContextProvider
    settings={{
      environmentId: "YOUR_ENVIRONMENT_ID",
      walletConnectors: [
        EthereumWalletConnectors,
        ZeroDevSmartWalletConnectors,
      ],
    }}
  >
    <DynamicWidget />

    <SignerAddress />
  </DynamicContextProvider>
);

export default App;

​
Using ZeroDev KernelAccountClient

To do a batched transaction, you can use the ZeroDev KernelAccountClient directly from the wallet connector. 
import {
  useDynamicContext,
  DynamicContextProvider,
  DynamicWidget,
} from "@dynamic-labs/sdk-react-core";
import {
  isZeroDevConnector,
  ZeroDevSmartWalletConnectors,
} from "@dynamic-labs/ethereum-aa";
import { EthereumWalletConnectors } from "@dynamic-labs/ethereum";

const contractABI = [
  {
    inputs: [{ internalType: "address", name: "_to", type: "address" }],
    name: "mint",
    outputs: [],
    stateMutability: "nonpayable",
    type: "function",
  },
];

const contractAddress = "0x34bE7f35132E97915633BC1fc020364EA5134863";

const BatchMint = () => {
  const { primaryWallet } = useDynamicContext();

  const mint = async () => {
    if (!primaryWallet) {
      return;
    }

    const { connector, address } = primaryWallet;

    // Use the isZeroDevConnector type guard to check for the ZeroDevConnector
    if (!isZeroDevConnector(connector)) {
      return;
    }

    // Export the ZeroDev KernelAccountClient from the connector
    const kernelClient = connector.getAccountAbstractionProvider();

    if (!kernelClient) {
      return;
    }

    // Now the kernelClient can be used to perform user operations

    const { hash } = await kernelClient.sendUserOperation([
      {
        callData: await kernelClient.account.encodeCallData({
          abi: contractABI,
          args: [address],
          functionName: "mint",
        }),
        target: contractAddress,
      },
      // ... add your additional transactions here
    ]);
  };

  if (!primaryWallet) return null;

  return <button onClick={mint}>mint</button>;
};

const App = () => (
  <DynamicContextProvider
    settings={{
      environmentId: "YOUR_ENVIRONMENT_ID",
      walletConnectors: [
        EthereumWalletConnectors,
        ZeroDevSmartWalletConnectors,
      ],
    }}
  >
    <DynamicWidget />

    <BatchMint />
  </DynamicContextProvider>
);

export default App;
For more information about ZeroDev’s AA features, go to ZeroDev’s documentation: https://docs.zerodev.app/

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FAQ