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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 Feb 24, 2026

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Previous Question

Creating a custom endpoint in the WordPress REST API allows you to extend the API with your own data and functionality. This involves using the `register_rest_route` function within a custom plugin or your theme's `functions.php` file.

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

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

Additional Comment:

Ensure your custom endpoint is unique to avoid conflicts with existing routes.
Use the `rest_api_init` action to register your route when the REST API is initialized.
Return a `WP_REST_Response` object for proper HTTP status and response formatting.
Test your endpoint by accessing it via `https://yourwebsite.com/wp-json/myplugin/v1/myendpoint`.

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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 Feb 24, 2026

Answer

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