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Cluster 2F · the field layer

Product data Shopify says AI platforms read

Shopify's optimizing-for-AI doc names the inputs AI platforms consider — detailed specifications, comparison information, comprehensive descriptions, structured data, sizing guides, material information, care instructions, price, availability, alt text.1 The 2026 reality: product-data hygiene is the AI ranking input. Classical PDP work, with a new exam grader.

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The Shopify list of AI-readable fields

Shopify's optimizing-store-for-ai page lists seven AI-input categories: detailed product specifications and technical details; comparison information with similar products; comprehensive product descriptions with relevant keywords; structured data and product attributes; sizing guides, material information, and care instructions; price, availability, and key features; high-quality images with descriptive alt text. The Catalog-optimization doc adds the structured fields: title, description, images, organization (type, vendor, collections, tags), barcode, variants, external product URL.

Two Shopify pages combined12 define the surface. The first describes the content discipline; the second names the structured PDP fields. Together they form the 2026 product-data spec for Shopify. The articles below break each category into a checklist tuned to the PDP admin surfaces.

The fields Shopify names

7

AI-input categories from Shopify's optimizing-store-for-ai page.

Shopify Help · 2026-05-22
7

structured product fields from the Catalog-optimization doc.

Shopify Help · 2026-05-22
1

field — External product URL — is Agentic-plan stores only.

Shopify Help · 2026-05-22

Titles — clear for humans, detailed for AI

Shopify's instruction has two tracks. For human customers: 'use clear, concise product titles.' For AI: 'ensure your product information is comprehensive' and 'add detailed product specifications and technical details.' The hybrid title pattern that satisfies both: a clear human noun phrase followed by the distinguishing specs that AI agents disambiguate on.

The full titles article walks the pattern with examples. The short version: 'Hoodie' fails both audiences. 'Heavyweight oversize cotton hoodie in stone — unisex, French terry, 350gsm' passes both. The first phrase reads on a collection page; the trailing specs feed the AI agents.

Comprehensive descriptions — five sections

Shopify says product descriptions should be 'comprehensive' with 'relevant keywords' for AI and 'compelling product summaries that highlight key benefits' for humans. A description that hits both has five sections, in order: a benefits-led opening paragraph, a specifications block, a comparison block, a sizing/material/care block, and a use-case or care-routine block.

The pattern is documented across Shopify's optimization page1, the Catalog page2, and the SEO-keywords page that warns against copying manufacturer descriptions verbatim. The descriptions article walks the section-by-section template; the comparison block article covers section three specifically.

Policies — the secondary AI surface

Shopify's Catalog-optimization page calls out store policies separately from product fields: policies should be 'complete and up-to-date' so AI agents reference accurate return and other policy information. The Knowledge Base app auto-pulls policy answers from four settings surfaces — Language, Customer account, Shipping and delivery, Return rules. Fix the underlying policy, and the AI answer updates.

The policy surface2 feeds Knowledge Base78 and the AI engines directly. The policies article walks the audit pass: open each policy in admin, rewrite for an AI-readable answer (one factual sentence, then conditions), and verify the Knowledge Base auto-FAQ updates.

Sizing, material, and care

Shopify's AI-optimization list explicitly names 'sizing guides, material information, and care instructions.' Those are PDP fields, not metafields by default — Shopify expects them in the description, in collapsible sections, or as page links. The AI engines read whatever's in the page body. The 2026 pattern: a structured sizing block, a structured materials block, a structured care block — all parseable, none hidden behind JavaScript-rendered accordions.

The sizing article walks the structured pattern and how to render the blocks so AI crawlers can parse them. The blockers are usually theme-side: tab components that hide content under JavaScript, custom blocks that render server-side only after a click. AI crawlers fetch the rendered HTML once; if the content isn't in the initial response, it isn't in the AI's index.

The 5 articles under this cluster

Five articles cover the five PDP categories Shopify names. Titles, descriptions, comparison blocks, policies, and sizing/material/care. Together they form the rewrite checklist for the Catalog Readiness install.

  1. HOW-TO Shopify product titles for AI Product titles that AI agents understand The structure Shopify recommends: 'clear, concise' for humans, 'detailed specifications' for AI. The hybrid title pattern that hits both. 9-min read
  2. HOW-TO Shopify product descriptions for AI Comprehensive descriptions: specs, comparisons, materials, care Shopify's verbatim instruction: 'ensure your product information is comprehensive.' The five sections every PDP description should carry. 10-min read
  3. REFERENCE Shopify PDP comparison blocks Comparison blocks lower on the PDP Shopify lists 'comparison information with similar products' as an AI-input field. Where it lives on the PDP and how to write it without breaking conversion. 8-min read
  4. HOW-TO Shopify store policies for AI Store policies as AI training data Shopify says policies must be 'complete and up-to-date' so AI agents reference accurate return and shipping info. The audit pass for each policy. 8-min read
  5. HOW-TO Shopify sizing materials care Sizing, materials, and care fields Shopify's optimization list calls out 'sizing guides, material information, and care instructions' as AI-readable fields. Where to put them on Shopify. 8-min read
  1. HOW-TO Shopify product titles for AI Product titles that AI agents understand The structure Shopify recommends: 'clear, concise' for humans, 'detailed specifications' for AI. The hybrid title pattern that hits both. 9-min read
  2. HOW-TO Shopify product descriptions for AI Comprehensive descriptions: specs, comparisons, materials, care Shopify's verbatim instruction: 'ensure your product information is comprehensive.' The five sections every PDP description should carry. 10-min read
  3. REFERENCE Shopify PDP comparison blocks Comparison blocks lower on the PDP Shopify lists 'comparison information with similar products' as an AI-input field. Where it lives on the PDP and how to write it without breaking conversion. 8-min read
  4. HOW-TO Shopify store policies for AI Store policies as AI training data Shopify says policies must be 'complete and up-to-date' so AI agents reference accurate return and shipping info. The audit pass for each policy. 8-min read
  5. HOW-TO Shopify sizing materials care Sizing, materials, and care fields Shopify's optimization list calls out 'sizing guides, material information, and care instructions' as AI-readable fields. Where to put them on Shopify. 8-min read

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