Title: wp_rest_server_class
Published: December 9, 2015
Last modified: February 24, 2026

---

# apply_filters( ‘wp_rest_server_class’, string $class_name )

## In this article

 * [Description](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#description)
 * [Parameters](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#parameters)
 * [Source](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#source)
 * [Related](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#related)
 * [Changelog](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#wp--skip-link--target)

Filters the REST Server Class.

## 󠀁[Description](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#description)󠁿

This filter allows you to adjust the server class used by the REST API, using a 
different class to handle requests.

## 󠀁[Parameters](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#parameters)󠁿

 `$class_name`string

The name of the server class. Default ‘[WP_REST_Server](https://developer.wordpress.org/reference/classes/wp_rest_server/)‘.

## 󠀁[Source](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#source)󠁿

    ```php
    $wp_rest_server_class = apply_filters( 'wp_rest_server_class', 'WP_REST_Server' );
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/rest-api.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/6.9.4/src/wp-includes/rest-api.php#L623)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/6.9.4/src/wp-includes/rest-api.php#L623-L623)

## 󠀁[Related](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#related)󠁿

| Used by | Description | 
| [rest_get_server()](https://developer.wordpress.org/reference/functions/rest_get_server/)`wp-includes/rest-api.php` |

Retrieves the current REST server instance.

  |

## 󠀁[Changelog](https://developer.wordpress.org/reference/hooks/wp_rest_server_class/?output_format=md#changelog)󠁿

| Version | Description | 
| [4.4.0](https://developer.wordpress.org/reference/since/4.4.0/) | Introduced. |

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