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 Amoy.

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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 (please use Polygon Amoy for this example) and copy your new ZeroDev project ID.

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 Amoy.

2

Enable in Dynamic

In the EVM section of your Dynamic Dashboard, toggle on Polygon Amoy and click Save.

Now, go to the Account Abstraction section, 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-powered embedded wallets + Email

Back in your Dynamic Dashboard, go to the Embedded Wallets section and enable Dynamic-powered embedded wallets.

Lastly, in the Log in & User Profile section, 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

Then import and add the ZeroDevSmartWalletConnectors and EthereumWalletConnectors to the walletConnectors prop on DynamicContextProvider.

To use ZeroDev v5.2, use Dynamic SDK version ^2.0.5

  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 dashboard

In 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://www.alchemy.com/faucets/polygon-amoy

7

Send a transaction

Run your app, and if you copied our snippet from earlier, you should see this basic page

Click 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 Amoy 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 Amoy 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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Specifying a bundler/paymaster RPC

Use ZeroDevSmartWalletConnectorsWithConfig and pass in values for bundlerRpc and paymasterRpc:

import { ZeroDevSmartWalletConnectorsWithConfig } from "@dynamic-labs/ethereum-aa";

<DynamicContextProvider
  settings={{
    environmentId: "YOUR_ENV_ID",
    walletConnectors: [
      ZeroDevSmartWalletConnectorsWithConfig({
        bundlerRpc: "CUSTOM_BUNDLER_RPC",
        paymasterRpc: "CUSTOM_PAYMASTER_RPC",
      }),
    ],
  }}
>
  {/* ... your app */}
</DynamicContextProvider>;

For more info, see: https://docs.zerodev.app/sdk/infra/pimlico#using-pimlico-paymaster

​
Specifying a bundler

To specify a bundler, use ZeroDevSmartWalletConnectorsWithConfig and pass in a value for bundlerProvider:

import { ZeroDevSmartWalletConnectorsWithConfig } from "@dynamic-labs/ethereum-aa";

<DynamicContextProvider
  settings={{
    environmentId: "YOUR_ENV_ID",
    walletConnectors: [
      ZeroDevSmartWalletConnectorsWithConfig({ bundlerProvider: "STACKUP" }),
    ],
  }}
>
  {/* ... your app */}
</DynamicContextProvider>;

For more info, see: https://docs.zerodev.app/meta-infra/rpcs#bundler—paymaster-rpcs

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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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Restricting Access to your ZeroDev Project

In order to restrict access to your ZeroDev project id to allow only dynamic to use it you can add dynamic’s static IP address’s to your projects IP allowlist.

Dynamic’s IP addresses:

  • 52.204.85.87
  • 54.145.74.8
  • 107.20.170.238
  • 52.206.26.56
  • 3.232.2.67
  • 44.213.187.169

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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.getAddress();

    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;

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

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FAQ