Add Links to Customizer

You need to start by adding the register action and then add section, setting and control. Be sure the change the $my_theme to your theme’s slug so this options only show up on your theme.

class SampleAddonCustomizer {

   public $my_theme="enter-your-theme-slug-here"; // <- Enter your theme slug here

   public function hooks() {

     $current_theme = wp_get_theme();

     if( $current_theme->template == $this->my_theme ) {
       add_action( 'customize_register', array( $this, 'register' ), 99 );
     }

   }

   public function register( $wp_customize ) {

         $wp_customize->add_section( 'my_custom_section_links', array(
           'capability' => 'edit_theme_options',
           'priority'   => 50,
           'title'      => __( 'Index/Archive', 'sample-customizer-addon' )
         ) );


         $wp_customize->add_setting(  'special', array(
           'capability' => 'edit_theme_options',
           'type'       => 'hidden',
           'autoload'   => false
         ) );

         $wp_customize->add_control( 'special', array(
             'label'   => 'Links to settings',
             'description' => $this->get_links(),
             'section' => 'my_custom_section_links',
             'type'    => 'hidden',
         ) );
   }

   public function get_links() {

     $links = array(
       array('url' => 'http://example.com/', 'text' => 'Example', 'desc' => 'Just an example'),
       array('url' => 'https://yahoo.com/', 'text' => 'Yahoo!', 'desc' => 'More entertainment'),
       array('url' => 'https://google.com/', 'text' => 'Google', 'desc' => 'Just Search'),
       array('url' => 'https://bing.com/', 'text' => 'Bing', 'desc' => 'Nice pictures'),
     );

     $html="";

     foreach ($links as $link) {
       $html .= '<p>'.$link['desc'].'<br>'.PHP_EOL;
       $html .= sprintf('<a href="https://wordpress.stackexchange.com/questions/280385/%s">%s</a>', $link['url'], $link['text']) . '<br>' . PHP_EOL;
       $html .= '</p>'.PHP_EOL;
     }


     return $html;
   }

 }

 $sampleAddonCustomizer = new SampleAddonCustomizer();
 $sampleAddonCustomizer->hooks();