> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Node.js

> Create user wallets from your backend in under 5 minutes

<Warning>
  **You are viewing docs for the previous version of the Wallets SDK.** We recommend upgrading to V1.
  See the [updated version of this page](/wallets/quickstarts/nodejs) or the [V1 migration guide](/wallets/guides/migrate-to-v1).
</Warning>

<CardGroup cols={2}>
  <Snippet file="before-you-start.mdx" />
</CardGroup>

<Steps>
  <Step title="Install the SDK">
    Run the following command to install the SDK:

    <Snippet file="wallets-sdk-installation-cmd.mdx" />
  </Step>

  <Step title="Create a wallet">
    See all supported chains [here](/introduction/supported-chains).

    ```tsx index.ts theme={null}
    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: "<your-chain>",
        signer: {
            type: "<signer-type>",
        },
    });

    console.log(wallet.address);
    ```
  </Step>
</Steps>

## Launching in Production

For production, the steps are almost identical, but some changes are required:

1. Create a developer account on the [production console](https://www.crossmint.com/console)
2. Create a production client API key on the [API Keys](https://www.crossmint.com/console/projects/apiKeys) page with the API scopes `users.create`, `users.read`, `wallets.read`, `wallets.create`, `wallets:transactions.create`, `wallets:transactions.sign`, `wallets:balance.read`, `wallets.fund`
3. Replace your test API key with the production key

## Learn More

<CardGroup cols={3}>
  <Card title="Check Balances" icon="money-bill-transfer" iconType="duotone" href="/wallets/v0/guides/check-balances">
    Check the balance of a wallet.
  </Card>

  <Card title="Transfer Tokens" icon="coins" iconType="duotone" color="#1A5785" href="/wallets/v0/guides/transfer-tokens">
    Send tokens between wallets.
  </Card>

  <Card title="Operational Signers" icon="key" iconType="duotone" color="#2156B9" href="/wallets/v0/guides/signers/registering-a-signer">
    Register operational signers on a wallet.
  </Card>
</CardGroup>

## Other Links

<CardGroup cols={2}>
  <Card title="API Reference" icon="terminal" color="#B56710" href="/api-reference/wallets/create-wallet">
    Deep dive into API reference docs.
  </Card>

  <Card title="Talk to an expert" icon="message" iconType="duotone" color="#ADD8E6" href="https://www.crossmint.com/contact/sales">
    Contact our sales team for support.
  </Card>
</CardGroup>