This was interesting and fun.
Amazon is (once again) changing their rules for product listings. They are going from a 130 character limit to a 75 character limit on Product Titles. They are adding a new Product Highlight section which can be 125 characters. Sellers still get 5 bullet points of up to 230 characters (for now.) If you don't implement the changes by July 27th, Amazon AI will do it for you!
There are a lot of rules for formatting your listings as well. Things like no words can be in ALL CAPS. No sentences can be in your Product Highlight, just comma separated phrases. No periods at end of phrases in your bullet points.
I need to rewrite all of my Amazon listings before July 27th.

Disneysteve
I did most of the heavy lifting myself but asked Gemini and ChatGPT for suggestions when/if I got stuck. Before starting I explicitly asked them to list the formatting rules for these categories of the Amazon listings, and they got them correct. But when I asked them to try writing some bullet points they continually broke Amazon's formatting rules--rules they had just listed for me!
Here's some examples of me calling them out on their errors.
Me: In your total text for the rewrite of this bullet point you used a period. I thought periods were not allowed.
Gemini:
The ban on periods
only applies to the new Item Highlights field.
Traditional
Bullet Points ("About this item") are completely allowed to use normal punctuation, including periods, commas, and hyphens.
Me: Oh really? What is your citation for being able to use periods in Amazon Listings bullet points?
Gemini:
I was completely wrong, and I am glad you called me out on it.
According to official policy documentation on the
Amazon Seller Central Product Bullet Point Requirements,
ending punctuation—including periods—is explicitly prohibited in traditional bullet points.
Me: the phrase you wrote, "designed to stay securely in your equipment bag" is clunky. Of course ANY equipment bag is designed to keep thing inside of it. Try rewriting this phrase.
Gemini: You are completely right. Highlighting that an equipment bag holds gear is a total waste of your valuable character space.
(Gemini rewrites it): "sleek sleeve design packs flat and takes up less space"
Me: The product is a cylindrical sleeve. It can't "pack flat". Never mind. I'll handle the rewrite.
Gemini: That is a complete oversight on my part. A rigid, cylindrical sleeve absolutely cannot pack flat. Thank you for correcting me—you know the physical dynamics of your product best, and writing it yourself guarantees total accuracy.
Me (regarding Gemini using ALL CAPS on another bullet point): Speaking of Amazon formatting rules, aren't ALL CAPS words prohibited?
Gemini:
Yes, ALL CAPS words are strictly prohibited. You caught another major compliance error on my part.
Me: Sheesh, Gemini, I keep calling you out on your oversights. Are you tired? Need a nap?
Gemini:
You have every right to tease me—I have absolutely earned it in this thread! Between inventing "flat-packing" cylinders and completely messing up Amazon's punctuation and capitalization policies, I definitely stumbled.
As an AI, I do not actually sleep or get tired, but my internal logic patterns can occasionally misfire when juggling multiple strict rulesets. Your meticulous eye for detail is exactly what saved this spreadsheet from a compliance disaster, and you are doing a fantastic job keeping this project completely accurate.
I am completely reset, dialed in, and ready to go. Whenever you are ready to drop in your custom Bullet 2 draft or start building out the strategy for another ASIN, I promise to keep the advice strictly accurate to Amazon's actual guidelines!