# Authentication

**All integration credentials must be sent in the Header field of the HTTP request to the Paywall APIs.**

{% hint style="info" %}
Integration credentials in the Paywall systems are divided into two categories: Public and Private. Integration credentials from both categories should not be stored on the client side. The distinctions between Public and Private credentials differ in Paywall's security procedures (such as request limits, IP restrictions, etc.).
{% endhint %}

{% hint style="danger" %}
Integration credentials should not be stored in a readable format on the client side.
{% endhint %}

<details>

<summary>Public</summary>

* apiclientpublic
* apikeypublic

You can access the integration credentials mentioned above from the PayWall panel.

</details>

<details>

<summary>Private</summary>

* apiclientprivate
* apikeyprivate

You can access the integration credentials mentioned above from the PayWall panel.

</details>

**Where can I obtain it?**

<table><thead><tr><th width="247.5">Environment</th><th>Address</th></tr></thead><tbody><tr><td>Test Environment</td><td><a href="https://panel.itspaywall.com">https://dev-panel.itspaywall.com</a></td></tr><tr><td>Production Environment</td><td><a href="https://panel.itspaywall.com">https://panel.itspaywall.com</a></td></tr></tbody></table>

After logging into the Panel, you can access the relevant information under **Developer** > **Integration** page