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AI Search

AI search doesn’t read your store the way a shopper does.

ChatGPT, Google’s AI Overviews, and every other AI shopping assistant read your store’s markup, not its design. A missing schema block or an absent llms.txt file is invisible to a customer and invisible to you — until an AI engine quietly leaves your products out of its answer. Cassian™ checks the specific, structural things AI engines rely on and tells you the moment one goes missing.

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What Cassian™ actually checks

Specific checks, not a vague promise.

Once your store is connected, Cassian™ checks whether it has an llms.txt file — the file AI engines look for to understand what you sell.

Checked via: missing_llms_txt

Cassian™ flags product pages with no Product schema, or schema missing the fields AI shopping assistants need.

Checked via: missing_product_schema, incomplete_product_schema

Cassian™ catches structured data that’s broken, not just missing — JSON-LD that fails to parse or fails schema.org’s required fields is invisible to AI engines either way.

Checked via: invalid_structured_data, schema_validation_errors

Cassian™ checks that your homepage identifies your business the way AI assistants expect — Organization or WebSite schema, not just a logo.

Checked via: missing_organization_schema

Cassian™ checks that robots.txt and sitemap.xml exist at your domain root.

Checked via: missing_robots_txt, missing_sitemap

Once your store is connected, Cassian™ also checks that robots.txt actually points to your sitemap — not just that both files exist.

Checked via: missing_sitemap_reference

Cassian™ flags FAQ and review content that’s visible on the page but invisible to AI engines because the matching schema isn’t there.

Checked via: missing_faq_schema, missing_review_schema

FAQ

Common questions about AI search

What is AI search optimization for an ecommerce store?
It’s making sure AI engines — ChatGPT, Google’s AI Overviews, Perplexity, and shopping assistants built on top of them — can actually read what your store sells. They don’t browse your site like a person does; they parse structured data (schema.org markup) and files like llms.txt and robots.txt. If those are missing or broken, an AI engine can misrepresent your products or skip your store in its answer entirely, with nothing showing up as an error on your side.
Is this the same as SEO?
Related, not identical. Traditional SEO is mostly about ranking in a list of links. AI search optimization is about whether an AI engine can correctly extract what you sell, what it costs, and whether it’s in stock — so it can describe or recommend your product accurately. Schema markup, llms.txt, and clean structured data serve both, but AI engines lean on the structured signals more heavily than a human scrolling a results page ever did.
Does Cassian™ validate my llms.txt file?
Cassian™ checks whether your store has an llms.txt file at all, with a guard against a styled “not found” page pretending to be one. That’s existence, not a validity check against a spec — there isn’t yet an agreed one to validate against. If your store doesn’t have the file, Cassian™ tells you before an AI engine finds out.
How long until I know what AI engines see on my store?
A free scan returns results in minutes — which schema is present or missing, and whether robots.txt and sitemap.xml exist at your domain root. No account required. Connect your store and Cassian™ also checks whether you have an llms.txt file and whether robots.txt actually points to your sitemap.

Explore the AI search cluster

AI search optimization for Shopify Ecommerce schema markup llms.txt for ecommerce Get products into ChatGPT shopping Google AI Overviews for ecommerce Cassian™ for Shopify Pricing How the Cassian Score™ works

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