Field notes
What agents see when they read your catalog.
Catalog data quality, GTINs, metafields, and the channel rules behind Google Merchant Center, Amazon Fresh, and AI shopping agents. Source-cited, drawn from first-hand scan data.
GTIN & identifiers
Shopify GTINs: how to get them, add them, and skip the fakes
A GTIN is the barcode number channels match your product against. Where to buy one from GS1, how to add it to a Shopify variant, and why cheap barcodes fail.
9 July 2026 12 min read
Catalog data
Catalog readiness: what it is and how it's scored
Catalog readiness measures how well a product feed survives the rules of Google, Amazon, and AI shopping agents. Here is how the score is built.
11 June 2026 12 min read