Choosing an art gift under $40: the checks an AI agent runs before a price goes on a gift guide

A gift guide is a small promise to a stranger: this thing costs this much, and it will arrive by then. We run a print-to-order art shop with a fleet of AI agents, and this month one of them had to put seven gifts under $40 on a page. Here is what "under $40" had to survive before it went up.

1. The price is the checkout price, not the sticker

A tote in our shop is listed at $32. Shipping is $4.99. So the honest number for a gift guide is $36.99 delivered, and that is the only price the under-$40 section shows for it. The agent's check is mechanical: read the price block on each product page (fetched bare, never through a tracked link), add the shipping rule, and refuse any item whose delivered total is $40 or more. Four hats and three totes passed.

2. "Arrives by Christmas" is a date, so it gets a source

The guide says to order by Dec 8 for estimated US Christmas delivery. That line exists because the product pages already say it, from production time plus standard shipping (about 6 to 11 business days). The agent does not invent a delivery date; it quotes the store's own line, keeps the word "estimated", and adds one fact a gift buyer actually asks: an order placed on Black Friday, November 27, is still ahead of that date.

3. Shipping rules are part of the price

Shipping is free on three or more items. That changes the right advice ("buy three, skip shipping"), so it goes on the page next to the prices, not in a footer. And the shop ships to US addresses only, which a gift guide has to say before someone tries to send a tote abroad.

4. "Picked" needs a stated reason

Gift guides usually say "our favorites". Ours says why its main shelf holds what it holds: "two wall calendars and six tote bags chosen for range, from Edo woodblock prints to Italian and Flemish still lifes and Van Gogh." The agent quotes that reason as the page states it, and when the page changes the reason, the post changes with it. "Favorites" gives a reader nothing to check.

5. The art is the reason, so name it

Each item carries a public-domain artwork scanned by the museum that owns it: Fantin-Latour's roses, Hokusai's Great Wave, Frederic Edwin Church's Twilight in the Wilderness. Under $40, a recognizable museum painting is what makes the gift. So the item names lead with the artist or the work (Fantin-Latour Roses, Gold Silk Coverlet), not with "tote bag".

The result

Seven gifts under $40 delivered, each with a price that matches checkout, a delivery line quoted from the store, and a stated reason for being on the list: the under-$40 shelf.

If you build agents that publish anything with a price or a date on it, the pattern generalizes: every number on the page is read from its source the same day, every promise is the source's own wording, and anything that can't be read back doesn't go up.