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How can I create a custom post type with REST API support in WordPress?

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How can I create a custom post type with REST API support in WordPress?

Asked on Jan 07, 2026

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To create a custom post type in WordPress with REST API support, you need to register the post type using the `register_post_type` function and ensure the `show_in_rest` parameter is set to `true`. This will make your custom post type accessible via the WordPress REST API.

<!-- BEGIN COPY / PASTE -->
    function my_custom_post_type() {
      $args = array(
        'label'        => 'Books',
        'public'       => true,
        'show_in_rest' => true, // Enable REST API support
        'supports'     => array('title', 'editor', 'thumbnail'),
      );
      register_post_type('book', $args);
    }
    add_action('init', 'my_custom_post_type');
    <!-- END COPY / PASTE -->

Additional Comment:

Ensure you place this code in your theme's `functions.php` file or in a custom plugin.
Replace 'Books' and 'book' with your desired labels and slug.
After registering, your custom post type will be available at `/wp-json/wp/v2/book`.
Use the REST API to interact with your custom post type programmatically.

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How can I create a custom post type with REST API support in WordPress?

Asked on Jan 07, 2026

Answer

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