> For the complete documentation index, see [llms.txt](https://docs.0xprocessing.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.0xprocessing.com/quick-start/api-set-up.md).

# API set up

1. Navigate to the **Settings menu.**
2. Open the integrated method section API
3. Find the section called **“API key”** and click **"Generate key"**.

<figure><img src="/files/P0b3LjAsxf08jxbeul6g" alt=""><figcaption></figcaption></figure>

{% hint style="danger" %}
**Please copy this key and save it somewhere safe. For security reasons, we cannot show it to you again. If you generate another key, the old one will no longer work.**
{% endhint %}

Use this API key for authorization when integrating one of their payment methods and withdrawals from the Merchant balance.&#x20;

API documentation: [0xProcessing API](/0xprocessing-api/obtaining-api-keys.md)