> For the complete documentation index, see [llms.txt](https://circular-protocol.gitbook.io/standard-apis/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://circular-protocol.gitbook.io/standard-apis/api-docs/php/mainnet-integration.md).

# Mainnet Integration

For using the Mainnet change the NAG url to `https://circularlabs.io/NAG_Mainnet.php?cep=` with the setNAGURL method.

```php
<?php

require 'vendor/autoload.php';
use CircularProtocol\Api\CircularProtocolAPI;

$circular = new CircularProtocolAPI();
$circular->setNAGURL("https://circularlabs.io/NAG_Mainnet.php?cep=");
```