The three feed fields that decide whether ChatGPT can sell your products

Shopify products reach ChatGPT through Shopify Catalog. Shopify's agentic storefronts are on by default for eligible stores, and Shopify's help page says you don't need to do anything for ChatGPT to discover your products through Shopify Catalog (Shopify Help Center, "Selling on ChatGPT", checked September 2026). You can switch it off in your Shopify admin under Sales channels, then Agentic. So if you haven't, your product data is probably already being read. The question is whether it parses.

Shopify Catalog also maps each product to a product category in Shopify's Standard Product Taxonomy and infers attributes such as colour, material and size (Shopify, "What is Shopify Catalog"). Setting the product category yourself in Shopify admin means it doesn't have to guess.

Beyond the category, three fields do most of the damage we see:

1. Product identifiers (GTIN/MPN). Identifiers let a product be matched to the same item elsewhere. Google's Merchant Center help says retailers who added correct GTINs saw a 20% increase in clicks on average (Google Merchant Center Help). A malformed GTIN (wrong length, dashes, spaces) is worse than a missing one, because Google Merchant Center can disapprove the product outright. Valid GTINs are 8, 12, 13, or 14 digits, no punctuation.

2. Hyper-specific product types. "Footwear" tells an engine nothing. "Men's insulated winter boots" answers the exact question a shopper asks. LLMs match your product against buying-intent language, and generic types tend to lose to specific ones. This is also the field small stores most often leave on the default.

3. Literal descriptions. Marketing copy ("Elevate your winter game!") tells a model little about what the product is. Plain, functional descriptions covering materials, use cases, fit, and temperature range are what gets parsed and matched.

The uncomfortable part: none of this shows up as a warning in the Shopify admin. Your store looks fine to you and can still be hard to read for the machine reading it on a shopper's behalf.

We built a free check for exactly this. It reads your public product feed and counts the products with missing or weak identifiers, product types and descriptions, with no install and no signup: run the free report. Inside the app, every finding comes with the exact fix: Install free on Shopify.