Nos services Schema.org

<?php // wp-content/mu-plugins/schema-local.php
add_action('wp_head', function () {
  if (!is_front_page()) return;
  $data = [
    '@context' => 'https://schema.org',
    '@type'    => 'Plumber',
    'name'     => get_bloginfo('name'),
    'url'      => home_url('/'),
    'telephone'=> '+33200000000',
    'areaServed' => ['Nantes', 'Rezé'],
  ];
  echo '<script type="application/ld+json">'
     . wp_json_encode($data) . '</script>';
});

// Next.js – app/produits/[slug]/page.tsx
export default async function Page({ params }) {
  const p = await getProduct(params.slug);
  const jsonLd = {
    '@context': 'https://schema.org',
    '@type': 'Product',
    name: p.name,
    offers: { '@type': 'Offer', price: p.price, priceCurrency: 'EUR' },
  };
  return (
    <script type="application/ld+json"
      dangerouslySetInnerHTML={{ __html: JSON.stringify(jsonLd) }} />
  );
}