Schema markup for AI search: the JSON-LD that gets you cited

17 August 2026 · AI Visibility Index

Why AI engines care about schema

When ChatGPT or Perplexity decides who to name, it's really asking: which entities do I understand well enough to talk about confidently? A business described only in flowing marketing prose requires the model to guess. A business with clean JSON-LD hands it a form already filled in: legal name, address, phone, hours, services, ratings.

This is the same machinery behind Google's knowledge panels — but AI answer engines lean on it too, because structured data is the cheapest way for them to avoid making things up about you.

The four types worth your time

1. Organization or LocalBusiness (homepage). The foundation. Include name, address, phone, opening hours, service area, same-as links to your profiles:

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "LocalBusiness",
  "name": "Summit Plumbing",
  "address": {
    "@type": "PostalAddress",
    "addressLocality": "Denver",
    "addressRegion": "CO"
  },
  "telephone": "+1-303-555-0134",
  "url": "https://summitplumbing.example",
  "openingHours": "Mo-Su 00:00-24:00",
  "sameAs": [
    "https://www.facebook.com/summitplumbing",
    "https://www.google.com/maps/place/..."
  ]
}
</script>

2. FAQPage (Q&A sections). Question-and-answer blocks marked as FAQ are exactly the shape AI engines love to quote — a question a customer asks, with a direct answer attached.

3. Article (blog content). Author, date, headline — establishes freshness and attribution for your content.

4. Service or Product (offer pages). What you sell and at what price — lets AI answer "how much does X charge?" without guessing.

The rules that actually matter

• Match the visible page. Markup describing content that isn't shown to visitors violates Google's guidelines and erodes trust signals everywhere.
• Consistency beats completeness. Name, address, and phone identical across schema, your footer, your Google Business Profile, and directories. One inconsistency can split your entity in two.
• Test it. Run your URL through Google's Rich Results Test and validator.schema.org after adding anything.

Not sure what shape your site is in? Our free AI Readiness Score checks your homepage's schema, indexability, and answer-first content in one pass.

Frequently asked questions

Is schema a ranking factor?

Not directly in classic SEO, and AI engines don't publish their weighting. What schema demonstrably does is improve entity understanding — which is the substrate recommendations are built from.

Do I need a developer to add JSON-LD?

Usually no. It's a paste-in script block; most CMSs have a field or plugin for it, and many SEO plugins generate Organization/LocalBusiness schema from a settings form.

Can wrong schema hurt me?

Yes — markup that contradicts your visible content (fake reviews, wrong addresses) can trigger spam policies and confuses AI engines. When in doubt, mark up less, accurately.