diff --git a/README.md b/README.md
index 392f615..a9ca085 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,4 @@
 	- [wp ajax course](https://developer.wordpress.org/plugins/javascript/ajax/)
 	- [examples from stackoverflow](https://stackoverflow.com/questions/43557755/how-to-call-ajax-in-wordpress)
 	- using `admin_url('admin-ajax.php')` or `wp-utils`
+- [wordpress apis](https://make.wordpress.org/core/handbook/best-practices/core-apis/)