Title: ProviderMetadata::getAuthenticationMethod
Published: May 20, 2026

---

# ProviderMetadata::getAuthenticationMethod(): WordPressAiClientProvidersHttpEnumsRequestAuthenticationMethod|null

## In this article

 * [Return](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-dto-providermetadata/getauthenticationmethod/?output_format=md#return)
 * [Source](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-dto-providermetadata/getauthenticationmethod/?output_format=md#source)
 * [Changelog](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-dto-providermetadata/getauthenticationmethod/?output_format=md#changelog)

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

Gets the authentication method.

## 󠀁[Return](https://developer.wordpress.org/reference/classes/wordpress-aiclient-providers-dto-providermetadata/getauthenticationmethod/?output_format=md#return)󠁿

 WordPressAiClientProvidersHttpEnumsRequestAuthenticationMethod|null The authentication
method.

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

    ```php
    public function getAuthenticationMethod(): ?RequestAuthenticationMethod
    {
        return $this->authenticationMethod;
    }
    ```

[View all references](https://developer.wordpress.org/reference/files/wp-includes/php-ai-client/src/providers/dto/providermetadata.php/)
[View on Trac](https://core.trac.wordpress.org/browser/tags/7.0/src/wp-includes/php-ai-client/src/Providers/DTO/ProviderMetadata.php#L164)
[View on GitHub](https://github.com/WordPress/wordpress-develop/blob/7.0/src/wp-includes/php-ai-client/src/Providers/DTO/ProviderMetadata.php#L164-L167)

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

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

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