> For the complete documentation index, see [llms.txt](https://xai-foundation.gitbook.io/xai-network/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://xai-foundation.gitbook.io/xai-network/kn/about-xai/sentry-key-setup/step-1-purchase-a-sentry-key/option-2-buy-sentry-key-via-xai-sentry-node-desktop-app.md).

# 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.

<figure><img src="https://content.gitbook.com/content/neke8a6D4Ybg9dkRA2GD/blobs/OxD5IoP0UHmZ8GhtxRGF/image.png" alt="" width="143"><figcaption></figcaption></figure>

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 %}

<div align="center"><figure><img src="https://content.gitbook.com/content/neke8a6D4Ybg9dkRA2GD/blobs/zyDXgMhJsQwuDULDtH2c/image.png" alt="" width="309"><figcaption></figcaption></figure></div>

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

<div align="center"><figure><img src="https://content.gitbook.com/content/neke8a6D4Ybg9dkRA2GD/blobs/GDOBX7Be23S5dnkil1s2/image.png" alt="" width="309"><figcaption></figcaption></figure></div>

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>" %}