No matter how your user signs up, whether it’s using social login i.e. Telegram, email/phone login or even with a branded wallet i.e. Metamask, you can create an embedded wallet for them using Dynamic. Simply decide when you want this wallet created and follow the guides below.
Please make sure you are on the latest V4 alpha of the SDK on your frontend before continuing.

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During Signup (automatic)

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Creating wallets for non-wallet authentication login

By default, embedded wallets are created automatically for users during sign-up if they don’t already have a wallet on the enabled chain. All you have to do is check that the “Create on Sign up” toggle is turned on in the Embedded Wallet configuration page.

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Creating wallets for external wallet login

Embedded wallets can be automatically created for users signing in with external wallets, such as Metamask. To enable this feature, click the “Create on Sign up” card to expand the “Advanced Options” panel, and ensure the “Embedded Wallet for Third-Party Wallets” toggle is enabled.
Automatic embedded wallet creation only creates a single wallet for a user on each chain you have selected. If you want to create multiple wallets per chain you will need to use the createEmbeddedWalletAccount method from the useEmbeddedWallet hook. See creating additional wallets

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Before Signup (pre-generated)

Pre-generated wallets allow you to create a wallet for a user prior to their first interaction with your application using either an email, phone number or social identifier (i.e. Farcaster or Twitter). Simply provide an identifier to our API and receive the new wallet address in the response. The user can receive funds and assets into their wallet! 
const options = {
  method: "POST",
  headers: {
    Authorization: "Bearer <token>",
    "Content-Type": "application/json",
  },
  body: '{"identifier":"me@myemail.com","type":"email", "chain":"ETH", ,"socialProvider":"emailOnly"}',
};

fetch(
  "https://app.dynamicauth.com/api/v0/environments/YOUR_ENVIRONMENT_ID/embeddedWallets",
  options
)
  .then((response) => response.json())
  .then((response) => console.log(response))
  .catch((err) => console.error(err));
Check out the createEmbeddedWallet API to see all the available identifier types.

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Creating wallets on additional chains

For users with an existing embedded wallet on a single chain, you can create an embedded wallet on an additional chain using the createEmbeddedWalletAccount method exported from the useEmbeddedWallet hook.

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Custom Logic (manual)

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Creating wallets any time

If you do not want to create wallets for users automatically when they sign up, you can create wallets for users using custom logic, calling the createEmbeddedWallet method from the useEmbeddedWallet hook when you want to create a wallet for a user. 
import { useEmbeddedWallet } from "@dynamic-labs/sdk-react-core";

// component declaration and all other logic you might need

const { createEmbeddedWallet } = useEmbeddedWallet();

const onCreateWalletHandler = async () => {
  try {
    await createEmbeddedWallet();
  } catch (e) {
    console.error(e);
  }
};

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Creating additional wallets

For users with an existing embedded wallet, you can create additional embedded wallets using the createEmbeddedWalletAccount method exported from the useEmbeddedWallet hook. Using the createEmbeddedWalletAccount method to create additional wallets on the same chain derives wallets from the user’s existing secret recovery phrase. This means that the user can access all their wallets using the same exported recovery phrase for each chain. The private keys for each wallet are derived from the recovery phrase and are unique to each wallet.
Embedded wallets created in Live environments cannot be deleted or removed. Ensure that you only create the desired quantity of wallets for each user.
The limitations for creating additional wallets are as follows:
  • Maximum of 5 wallets per chain
  • Maximum of 15 wallets per user
  • If Smart Wallets are enabled, each generated signer wallet will have its own AA enabled wallet

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Creating Embedded Wallet alongside Branded Wallet

Keep the “Create on Sign up” toggle in the Embedded Wallet configuration page toggled on, and then use the createEmbeddedWallet method from the useEmbeddedWallet hook to create a wallet for a user who has signed up using a branded wallet. You can tell if you need to create that wallet post signup by checking userHasEmbeddedWallet from the useEmbeddedWallet hook. 
import { useEmbeddedWallet } from "@dynamic-labs/sdk-react-core";

// component declaration and all other logic you might need

const { createEmbeddedWallet, userHasEmbeddedWallet } = useEmbeddedWallet();

const onCreateWalletHandler = async () => {
  if (!userHasEmbeddedWallet) {
    try {
      await createEmbeddedWallet();
    } catch (e) {
      console.error(e);
    }
  }
};

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Notes

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Content Security Policy (CSP)

Embedded wallets use iframes to provide one more security layer to the wallet. If you enforce CSP on your website, you will need to add the following to your frame-src directive:

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What Next?