With Privy, you can pregenerate self-custodial Ethereum and Solana embedded wallets for existing users, or create a new user with other login methods, like an email address or phone number, without requiring the user to login. You can even send assets to the wallet before the user logs in to your app for the first time. Once the user associated with the account logs in, they will be able to access the pregenerated wallet and any assets sent to them.

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Pregenerating wallets for new users

To pregenerate embedded wallets for a given user, use the importUser method from PrivyClient.
importUser: ({linkedAccounts: LinkedAccountType[], customMetadata?: CustomMetadataType, wallets?: WalletCreateRequestType[]}) => Promise<User>

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Usage

const user = await privy.importUser({
    linkedAccounts: [
        {
        type: 'email',
        address: '[email protected]',
        },
    ],
    customMetadata: {
        username: 'name',
        isVerified: true,
        age: 23,
    },
    wallets: [
        {
            chainType: 'ethereum',
            createSmartWallet: true,
            additionalSigners: [
                {
                    signerId: '<signer-id>',
                    // Policies specific to this signer
                    policyIds: ['<policy-id>']
                }
            ],
            // Policies for all transactions on the wallet, no matter the signer
            policyIds: ['<policy-id>']
        },
        {
            chainType: 'solana',
            additionalSigners: [
                {
                    signerId: '<signer-id>',
                    policyIds: ['<policy-id>']
                }
            ],
            policyIds: []
        }
    ]
});

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Params

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linkedAccounts
LinkedAccountType[]
required
An array of linked accounts to associate with the user.
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customMetadata
CustomMetadataType
(Optional) Custom metadata to associate with the user.
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wallets
WalletCreateRequestType[]
(Optional) An array of wallets to create for the user.

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Returns

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user
User
The user with the newly created wallets.

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Creating wallets for existing users

To create embedded wallets for an existing user, use the createWallets method from PrivyClient.
createWallets: ({userId: string, wallets?: WalletCreateRequestType[]}) => Promise<User>

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Usage

const user = await privy.createWallets({
    userId: 'did:privy:clddy332f002tyqpq3b3lv327',
    wallets: [
        {
            chainType: 'ethereum',
            createSmartWallet: true,
        },
        {
            chainType: 'solana',
        }
    ]
});

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Params

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userId
string
required
The Privy user ID to create wallets for.
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wallets
WalletCreateRequestType[]
(Optional) An array of wallets to create for the user.

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Returns

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user
User
The user with the newly created wallets.