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How can I create a custom endpoint in the WordPress REST API?

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How can I create a custom endpoint in the WordPress REST API?

Asked on Mar 21, 2026

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Creating a custom endpoint in the WordPress REST API allows you to extend the API with your own data and functionality. This involves registering a new route and defining a callback function to handle requests.

<!-- BEGIN COPY / PASTE -->
    add_action('rest_api_init', function () {
        register_rest_route('myplugin/v1', '/custom-endpoint', array(
            'methods' => 'GET',
            'callback' => 'my_custom_endpoint_callback',
        ));
    });

    function my_custom_endpoint_callback(WP_REST_Request $request) {
        return new WP_REST_Response(array('message' => 'Hello, World!'), 200);
    }
    <!-- END COPY / PASTE -->

Additional Comment:

Place this code in your theme's functions.php file or a custom plugin.
The "myplugin/v1" is the namespace and version for your custom endpoint.
The callback function should handle the request and return a WP_REST_Response object.
Ensure you have the REST API enabled and accessible on your WordPress site.

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Ask any question about WordPress here... and get an instant response.

How can I create a custom endpoint in the WordPress REST API?

Asked on Mar 21, 2026

Answer

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