Title: RequestAuthenticationMethod
Published: May 20, 2026

---

# class RequestAuthenticationMethod {}

## In this article

 * [Methods](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#methods)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#source)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#changelog)

[ Back to top](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#wp--skip-link--target)

Enum for request authentication methods.

## 󠀁[Methods](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#methods)󠁿

| Name | Description | 
| [RequestAuthenticationMethod::getImplementationClass](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/getimplementationclass/) | Gets the implementation class for the authentication method. |

## 󠀁[Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#source)󠁿

    ```php
    class RequestAuthenticationMethod extends AbstractEnum
    {
        /**
         * API key authentication.
         */
        public const API_KEY = 'api_key';
        /**
         * Gets the implementation class for the authentication method.
         *
         * @since 0.4.0
         *
         * @return class-string<RequestAuthenticationInterface&WithArrayTransformationInterface> The implementation class.
         *
         * @phpstan-ignore missingType.generics
         */
        public function getImplementationClass(): string
        {
            // At the moment, this is the only supported method.
            // Once more methods are available, add conditionals here for each method.
            return ApiKeyRequestAuthentication::class;
        }
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/providers/http/enums/requestauthenticationmethod.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Providers/Http/Enums/RequestAuthenticationMethod.php#L18)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Providers/Http/Enums/RequestAuthenticationMethod.php#L18-L39)

## 󠀁[Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-http-enums-requestauthenticationmethod/?output_format=md#changelog)󠁿

| Version | Description | 
| [0.4.0](https://developer.wordpress.org/reference/since/0.4.0/) | Introduced. |

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