JSON API DELETE USER extends the JSON API Plugin with a new Controller to delete user with meta data. Documentation You need to create nonce to delete user, nonce can be created by calling http://localhost/api/get_nonce/?controller=user&method=delete_user_with_meta You can then use ‘nonce’ value to delete user. = Method: delete_user_with_meta= You can find example.php file to understand delete user api call via curl. http://localhost/wordpress/api/user/delete_user_with_meta?email=example@domain.com