After installing our Wordpress plugin you can add the following snippet to your theme function.
This function will enable the Divi builder for all new posts published through StoryChief.

function enable_divi_builder_storychief_after_publish_action($story) {
    $post_id = $story['external_id'];

    $post_content_prefix = '[et_pb_section][et_pb_row][et_pb_column][et_pb_text]';
    $post_content_suffix = '[/et_pb_text][/et_pb_column][/et_pb_row][/et_pb_section]';
    $post_content = $story['content'];

    $updated_post = array(
        'ID' => $post_id,
        'post_content' => $post_content_prefix . $post_content . $post_content_suffix,
    );

    kses_remove_filters();
    wp_update_post($updated_post);
    kses_init_filters();

    update_post_meta($post_id, '_et_pb_use_builder', 'on');
    update_post_meta($post_id, '_et_pb_show_page_creation', 'on');
    update_post_meta($post_id, '_et_pb_old_content', $post_content);
    // update_post_meta($post_id, '_et_pb_page_layout', 'et_no_sidebar');
}
add_action('storychief_after_publish_action', 'enable_divi_builder_storychief_after_publish_action', 1);

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