When a user asks ChatGPT for product help, it can present a shortlist drawn from merchant feeds through ACP. Over a million Shopify merchants are auto-enrolled; the question isn't whether you participate but whether your product data is structured well enough to be selected. The March 2026 pivot to discovery-first (checkout completes on your site) makes feed and schema quality — not a payments integration — the deciding factor.
Keep a clean structured product feed, ship Product/Offer schema, and allow OAI-SearchBot in robots.txt. Shopify stores are largely enrolled automatically.