Create Wallet

This page has been updated for Wallets SDK V1. If you are using the previous version, see the previous version of this page or the V1 migration guide.

Prerequisites

API Key: Ensure you have an API key with the scopes: wallets.create.

Try it Live

Experience wallet creation in action with this interactive demo. Create a Solana testnet wallet using just your email address:

Creating a Wallet

Wallet creation requires a recovery signer — used for account recovery and adding new signers. On client-side SDKs, a device signer is automatically added as the default operational signer.

import { useWallet } from '@crossmint/client-sdk-react-ui';

const { createWallet } = useWallet();

const wallet = await createWallet({
    chain: "base-sepolia",
    recovery: {
        type: "email",
        email: "user@example.com",
    },
});

See the React SDK reference for all parameters.

import { CrossmintWallets, createCrossmint } from "@crossmint/wallets-sdk";

const crossmint = createCrossmint({
    apiKey: "<your-server-api-key>",
});

const crossmintWallets = CrossmintWallets.from(crossmint);

const wallet = await crossmintWallets.createWallet({
    chain: "base-sepolia",
    recovery: {
        type: "server",
        secret: process.env.RECOVERY_SIGNER_SECRET,
    },
    signers: [
        { type: "server", secret: process.env.WALLET_SIGNER_SECRET },
    ],
});

See the SDK reference for all parameters and return types.

import { useWallet } from '@crossmint/client-sdk-react-native-ui';

const { createWallet } = useWallet();

const wallet = await createWallet({
    chain: "base-sepolia",
    recovery: {
        type: "email",
        email: "user@example.com",
    },
});

See the React Native SDK reference for all parameters.

import com.crossmint.kotlin.sdk.Crossmint
import com.crossmint.kotlin.types.EVMChain
import com.crossmint.kotlin.signers.SignerType

val sdk = Crossmint.instance
val result = sdk.crossmintWallets.createWallet(
    chain = EVMChain.BaseSepolia,
    recovery = SignerType.Email("user@example.com")
)
val wallet = result.getOrThrow()
println("Wallet address: ${wallet.address}")

import CrossmintClient

let sdk = CrossmintSDK.shared(
    apiKey: crossmintApiKey,
    authManager: crossmintAuthManager
)

let wallet = try await sdk.crossmintWallets.createWallet(
    chain: EVMChain.baseSepolia,
    recovery: EVMSigners.email("user@example.com")
)
print("Wallet address:", wallet.address)

import 'package:crossmint_flutter/crossmint_flutter_ui.dart';

final controller = CrossmintWalletContext.of(context).requireWalletController;

final wallet = await controller.createWallet(
  const CrossmintWalletCreateRequest(
    chain: 'base-sepolia',
    recovery: CrossmintEmailSignerConfig(email: 'user@example.com'),
  ),
);

With CrossmintWalletProvider + createOnLogin, the wallet is created automatically after login. See the Flutter SDK reference for all parameters.

curl --request POST \
    --url https://staging.crossmint.com/api/2025-06-09/wallets \
    --header 'Content-Type: application/json' \
    --header 'X-API-KEY: <x-api-key>' \
    --data '{
        "chainType": "evm",
        "config": {
            "adminSigner": {
                "type": "email",
                "email": "user@example.com"
            }
        },
        "owner": "email:user@example.com"
    }'

See the API reference for more details.

The REST API uses adminSigner (recovery role) and delegatedSigners (operational signers). These map to recovery and signers in the SDK.

Retrieving an Existing Wallet

Use getWallet() to retrieve a wallet that was previously created. If the wallet does not exist, it throws a WalletNotAvailableError.

import { useWallet } from '@crossmint/client-sdk-react-ui';

const { getWallet } = useWallet();

const wallet = await getWallet({ chain: "base-sepolia" });

import { CrossmintWallets, createCrossmint } from "@crossmint/wallets-sdk";

const crossmint = createCrossmint({
    apiKey: "<your-server-api-key>",
});

const crossmintWallets = CrossmintWallets.from(crossmint);

const wallet = await crossmintWallets.getWallet(
    "<wallet-address>",
    { chain: "base-sepolia" }
);

await wallet.useSigner({
    type: "server",
    secret: process.env.WALLET_SIGNER_SECRET!,
});

import { useWallet } from '@crossmint/client-sdk-react-native-ui';

const { getWallet } = useWallet();

const wallet = await getWallet({ chain: "base-sepolia" });

import com.crossmint.kotlin.sdk.Crossmint
import com.crossmint.kotlin.types.EVMChain

val sdk = Crossmint.instance
val result = sdk.crossmintWallets.getWallet(chain = EVMChain.BaseSepolia)
val wallet = result.getOrThrow()
println("Wallet address: ${wallet.address}")

import CrossmintClient

let sdk = CrossmintSDK.shared(
    apiKey: crossmintApiKey,
    authManager: crossmintAuthManager
)

let wallet = try await sdk.crossmintWallets.getWallet(
    chain: EVMChain.baseSepolia,
    recovery: EVMSigners.email("user@example.com")
)

import 'package:crossmint_flutter/crossmint_flutter_ui.dart';

final controller = CrossmintWalletContext.of(context).requireWalletController;

final wallet = await controller.getWallet(
  const CrossmintWalletLookupRequest(chain: 'base-sepolia'),
);

curl --request GET \
    --url https://staging.crossmint.com/api/2025-06-09/wallets/<wallet-locator> \
    --header 'X-API-KEY: <x-api-key>'

See the API reference for more details.

Get-or-Create Pattern

If you want to retrieve an existing wallet or create one if it does not exist, use WalletNotAvailableError to implement the pattern:

import { useWallet, WalletNotAvailableError } from '@crossmint/client-sdk-react-ui';

const { getWallet, createWallet } = useWallet();

let wallet;
try {
    wallet = await getWallet({ chain: "base-sepolia" });
} catch (error) {
    if (error instanceof WalletNotAvailableError) {
        wallet = await createWallet({
            chain: "base-sepolia",
            recovery: {
                type: "email",
                email: "user@example.com",
            },
        });
    } else {
        throw error;
    }
}

import {
    CrossmintWallets,
    WalletNotAvailableError,
    createCrossmint,
} from "@crossmint/wallets-sdk";

const crossmint = createCrossmint({
    apiKey: "<your-server-api-key>",
});

const crossmintWallets = CrossmintWallets.from(crossmint);

let wallet;
try {
    wallet = await crossmintWallets.getWallet(
        "<wallet-address>",
        { chain: "base-sepolia" }
    );
    await wallet.useSigner({
        type: "server",
        secret: process.env.WALLET_SIGNER_SECRET!,
    });
} catch (error) {
    if (error instanceof WalletNotAvailableError) {
        wallet = await crossmintWallets.createWallet({
            chain: "base-sepolia",
            recovery: {
                type: "server",
                secret: process.env.RECOVERY_SIGNER_SECRET,
            },
            signers: [
                {
                    type: "server",
                    secret: process.env.WALLET_SIGNER_SECRET,
                },
            ],
        });
    } else {
        throw error;
    }
}

import { useWallet, WalletNotAvailableError } from '@crossmint/client-sdk-react-native-ui';

const { getWallet, createWallet } = useWallet();

let wallet;
try {
    wallet = await getWallet({ chain: "base-sepolia" });
} catch (error) {
    if (error instanceof WalletNotAvailableError) {
        wallet = await createWallet({
            chain: "base-sepolia",
            recovery: {
                type: "email",
                email: "user@example.com",
            },
        });
    } else {
        throw error;
    }
}

import com.crossmint.kotlin.sdk.Crossmint
import com.crossmint.kotlin.types.EVMChain
import com.crossmint.kotlin.signers.SignerType

val sdk = Crossmint.instance
val wallet = sdk.crossmintWallets.getWallet(chain = EVMChain.BaseSepolia)
    .getOrNull()
    ?: sdk.crossmintWallets.createWallet(
        chain = EVMChain.BaseSepolia,
        recovery = SignerType.Email("user@example.com")
    ).getOrThrow()

import CrossmintClient

let sdk = CrossmintSDK.shared(
    apiKey: crossmintApiKey,
    authManager: crossmintAuthManager
)

let wallet: EVMWallet
if let existing = try await sdk.crossmintWallets.getWallet(
    chain: EVMChain.baseSepolia,
    recovery: EVMSigners.email("user@example.com")
) {
    wallet = existing
} else {
    wallet = try await sdk.crossmintWallets.createWallet(
        chain: EVMChain.baseSepolia,
        recovery: EVMSigners.email("user@example.com")
    )
}

import 'package:crossmint_flutter/crossmint_flutter_ui.dart';

final controller = CrossmintWalletContext.of(context).requireWalletController;

// Controller.getWallet returns null when the wallet does not exist.
var wallet = await controller.getWallet(
  const CrossmintWalletLookupRequest(chain: 'base-sepolia'),
);
wallet ??= await controller.createWallet(
  const CrossmintWalletCreateRequest(
    chain: 'base-sepolia',
    recovery: CrossmintEmailSignerConfig(email: 'user@example.com'),
  ),
);

On client-side SDKs (React, React Native), if you use CrossmintWalletProvider with the createOnLogin prop, the wallet is created automatically when the user logs in — no manual createWallet call is needed.

Introduction

Quickstarts ⚡️

Concepts

Guides

API Reference

Prerequisites

Try it Live

Creating a Wallet

Retrieving an Existing Wallet

Get-or-Create Pattern

Next Steps

Transfer tokens

Add signers

Fund your wallet

Introduction

Quickstarts ⚡️

Concepts

Guides

API Reference

Documentation Index

​Prerequisites

​Try it Live

​Creating a Wallet

​Retrieving an Existing Wallet

​Get-or-Create Pattern

​Next Steps

Transfer tokens

Add signers

Fund your wallet

Prerequisites

Try it Live

Creating a Wallet

Retrieving an Existing Wallet

Get-or-Create Pattern

Next Steps