Let an agent shop, build a cart, and stop before payment

A store can let Claude or ChatGPT browse products, assemble a cart, and prepare checkout before sending the buyer to the merchant site.

Done with ClaudeChatGPT· Intermediate· Aug 2026

What they did
The store owner described a setup meant to make an ecommerce site ready for agent-led shopping. In their example, the store exposes an MCP server so Claude or ChatGPT can search the catalog, customize a T-shirt, fill a cart, and begin checkout. A commenter also said the flow can try promo codes and then pass the shopper to the store’s own checkout page.
How it went
The discussion did not include measurements or launch results. It did show one store saying the process works now, but the handoff from agent to checkout was left unclear.
Tips
Keep the agent on a short leash: let it gather items, totals, and discount options, then pause before any payment step. If your store uses this setup, make it obvious when checkout moves from chat to the merchant site.

Try it yourself with Claude in Chrome

Use [Claude/ChatGPT] to shop on [store site]. Find [items, sizes, colors, quantities] within [budget], add them to a cart, and check whether any promo codes apply. Show me the cart, the total, and the checkout link, then stop and wait for my approval before you do anything that sends the order, enters payment details, or finalizes the purchase.

Fill in the [brackets]. Agents can make mistakes, so review anything before it is sent, paid or deleted.

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