{"pageUrl":"https://promagen.com/which-ai-engines-cite-uk-ecommerce-2026","lastModified":"2026-05-10","provenanceHash":"sha256:dcd26d5fcce1936121955d7760771a56bc3fbc6119779ee272b32ba96586ae2e","provenanceNote":"Citation surface, e-commerce structural signal, and methodology observations describe Sentinel's measurements against a UK e-commerce shopping-intent query set as of 2026-05-10. Per-vendor citation rates are not published because vendors do not document AI citation behaviour as a per-vertical contract. The vertical framework is operator-runnable; per-site observations require a Sentinel snapshot.","claims":[{"id":"claim-product-schema-precondition","statement":"Product schema with populated Offer (price, priceCurrency, availability), AggregateRating, and Brand fields is a precondition for consistent AI engine citation of UK e-commerce product pages on shopping-intent queries. Pages without populated Product schema force the engine to reconstruct the product entity from raw HTML, which is error-prone for UK-specific signals such as sterling pricing and UK shipping availability.","evidenceUrl":"https://promagen.com/sentinel/weekly","lastVerified":"2026-05-10","hash":"sha256:6fba0a735850414b343d5143995309b2cfc58c03e6ac5827f1192a23f6b4d2cc"},{"id":"claim-comparison-pages-cited-most","statement":"Review and comparison pages (\"best X UK\", \"X vs Y\") are the most consistently cited UK e-commerce surface across ChatGPT Search, Perplexity, and Gemini AI Overviews on shopping-intent queries. Citation rate is driven by clean structured comparison content and entity disambiguation, not vendor preference for any specific e-commerce platform.","evidenceUrl":"https://promagen.com/sentinel/weekly","lastVerified":"2026-05-10","hash":"sha256:410f73fea0bd732b7caac0cb83409d5315e21e489dcaa249b21961c7bb3fcba3"},{"id":"claim-sterling-pricing-must-be-rendered","statement":"AI engines extract pricing from rendered HTML. UK e-commerce pricing pages that show sterling values directly in rendered HTML are more disambiguatable for UK shopping queries than pages that show client-side currency-switched values, because client-side currency switching often hides sterling from the engine's parser.","evidenceUrl":"https://promagen.com/sentinel/weekly","lastVerified":"2026-05-10","hash":"sha256:de5d7f39d3ca66f75d5c77d497a43ed08a186ac4ce106267798b3251054fd7cf"},{"id":"claim-bare-product-pages-cite-poorly","statement":"Bare product pages without Product schema, AggregateRating, or substantive content cite less consistently than schema-rich equivalents on the same site. The differentiator is structured entity disambiguation, not page volume or marketing copy.","evidenceUrl":"https://promagen.com/sentinel/weekly","lastVerified":"2026-05-10","hash":"sha256:9073298304d7e0be8e443ee7aad51a677d312d30e9fe4f3bf9b4312f08f1ee33"},{"id":"claim-no-vendor-publishes-vertical-citation","statement":"None of the four major AI engines publishes a per-vertical citation behaviour contract for UK e-commerce or any other vertical. Specific claims like \"Perplexity prefers UK e-commerce sites with X\" or \"ChatGPT cites UK e-commerce at rate Y\" are inference from observable output, not vendor contract.","evidenceUrl":"https://platform.openai.com/docs/bots","lastVerified":"2026-05-10","hash":"sha256:57b98ecdd7f15254521c901d1343ee04b29052cffa6f3aa5bc4e691947f64350"}]}