yoast_seo_settings_change_indexnow_endpoint.php

<?php

/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/* Change IndexNow endpoint in Yoast SEO
* Credit: Yoast team
* Last Tested: Apr 21 2025 using Yoast SEO 24.9 on WordPress 6.8
* Available endpoints: https://www.indexnow.org/faq
*/

add_filter( 'Yoast\WP\SEO\indexnow_endpoint', 'yoast_seo_settings_change_indexnow_endpoint' );

function yoast_seo_settings_change_indexnow_endpoint () {
  return 'https://www.bing.com/indexnow';
}

yoast_seo_settings_change_indexnow_key.php

<?php

/********* DO NOT COPY THE PARTS ABOVE THIS LINE *********/

/* Change IndexNow key in Yoast SEO
* Credit: Yoast team
* Last Tested: Apr 22 2025 using Yoast SEO 24.9 on WordPress 6.8
* REQUIRED: Visit the homepage after adding the code to update the key
* Yoast SEO will create the [key.txt] dynamically
*/

add_filter( 'init', 'yoast_seo_settings_change_indexnow_key' );

function yoast_seo_settings_change_indexnow_key () {
	$new_key = 'your-private-key'; // Change to your private key
  
	//Do not remove the lines below
	$options = get_option('wpseo');
	$options[ 'index_now_key' ] = $new_key;
	update_option( 'wpseo' , $options);
}