• get_children
• get_extended
• get_post
• get_post_ancestors
• get_post_mime_type
• get_post_status
• get_post_type
• get_posts
• is_post
• is_single
• is_sticky
• wp_get_recent_posts
• wp_get_single_post

Вставка/удаление записи

• wp_delete_post
• wp_insert_post
• wp_publish_post
• wp_update_post

Страницы

• get_all_page_ids
• get_page
• get_page_by_path
• get_page_by_title
• get_page_children
• get_page_hierarchy
• get_page_uri
• get_pages
• is_page
• page_uri_index
• wp_list_pages

Произвольное поле (postmeta)

• add_post_meta
• delete_post_meta
• get_post_custom
• get_post_custom_keys
• get_post_custom_values
• get_post_meta
• update_post_meta

Вложения

• get_attached_file
• is_attachment
• is_local_attachment
• update_attached_file
• wp_attachment_is_image
• wp_insert_attachment
• wp_delete_attachment
• wp_get_attachment_image
• wp_get_attachment_image_src
• wp_get_attachment_metadata
• wp_get_attachment_thumb_file
• wp_get_attachment_thumb_url
• wp_get_attachment_url
• wp_check_for_changed_slugs
• wp_count_posts
• wp_mime_type_icon
• wp_update_attachment_metadata

Закладки

• get_bookmark
• get_bookmarks
• wp_list_bookmarks

Другие

• add_meta_box
• get_the_ID
• get_the_author
• get_the_content
• wp_get_post_categories
• wp_set_post_categories
• wp_trim_excerpt