# Option 2: Buy Sentry Key via Xai Sentry Node desktop app

#### **If you've already downloaded the Xai Sentry Node desktop app, you can initiate buying keys via the desktop application. See steps below:**

1. Navigate to the Keys page in the desktop application.

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2. Click "Purchase Keys" on the Keys page.

<figure><img src="https://content.gitbook.com/content/neke8a6D4Ybg9dkRA2GD/blobs/8uFS3JiVhHKN3SRTe7H9/image.png" alt="" width="375"><figcaption></figcaption></figure>

3. Enter your desired quantity.

{% hint style="warning" %}

* The recommended max quantity per transaction is 100 keys. Purchasing more than 100 keys in a single transaction will likely fail due to gas limits on Arbitrum One. There is no limit to the number of Keys per wallet.
* #### The price you see below is only for demo purposes - this is not a real key and not a final price.

{% endhint %}

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4. Enter a promo code (if you have one).

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5. Click "Confirm Purchase". This will pop you out to a web browser.

{% hint style="info" %}
Xai Sentry Key purchases will only ever take place on the xai.games domain. Check that you are on xai.games whenever purchasing Xai Sentry Keys.
{% endhint %}

<div align="center"><figure><img src="https://content.gitbook.com/content/neke8a6D4Ybg9dkRA2GD/blobs/wIJgTxB5TfONhv2qz0Il/image.png" alt="" width="309"><figcaption></figcaption></figure></div>

6. Complete the remaining steps using the guide below:

{% @supademo/embed demoId="mkRyp8eTNZByn6edaoyi8" url="<https://app.supademo.com/demo/mkRyp8eTNZByn6edaoyi8>" %}