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

# API Key

> Integrate with WalletKit API from server-side applications using your API key

Using API Keys is ideal when you have an existing authentication system in place for your users.

<Warning>
  API Keys are intended for server-side use only. You should never expose your API key in any public website or app's client-side code.
</Warning>

### Setup

You can find and manage your API keys in the [WalletKit Dashboard](https://app.walletkit.com/api-keys).

Once you have the API key from the WalletKit dashboard, authenticate your requests like so:

<CodeGroup>
  ```typescript Typescript theme={null}
  const wk = new WalletKitClient({
    projectId: "<Your Project ID>",
    token: "<Your API Key>":,
  });
  ```

  ```bash Curl theme={null}
  curl --request GET \
    --url https://testnet.walletkit.com/wallets \
    --header 'X-WalletKit-Project-ID: <Project ID>' \
    --header 'Authorization: Bearer <Your API Key>'
  ```
</CodeGroup>