AI Product Description Generator: How to Write Listings That Sell (With a Free Template and a 10-Minute Test)

Most AI product description advice boils down to "paste the product name, press generate, publish." That's exactly how you end up with a listing that says your jacket is waterproof when it isn't, and a return request two weeks later.

My name is Artem, and I run the Writingmate blog. I spend a lot of my week comparing AI models on the same prompt, and product copy is one of the easiest places to see how differently they behave: one model pads, another invents a material, a third writes something you'd actually sign off on. Below is the workflow I'd use if I had a catalog to ship tomorrow: a fact sheet, a prompt template, a 10-minute test across models, and a checklist that catches made-up claims.

If you just want to start, the free Writingmate AI Product Description Generator takes a product and some details and gives you a draft. Everything below makes that draft better, whichever tool you use.

The video above, "eCommerce Product Descriptions with ChatGPT: Perfect Shopify Listings In Minutes!" by Rihab Seb, is a decent walkthrough of the basic prompt-and-paste flow for Shopify. I'm treating it as the starting point and adding the parts it doesn't cover: grounding the model in facts, comparing models, and checking the output.

Why "paste a name and generate" fails

A model only knows what you tell it. Give it "ceramic pour-over coffee dripper" and it fills the gaps with plausible-sounding filler: "perfect for coffee lovers," "crafted with care," maybe a heat-resistance claim you never made. Fluent text, zero facts.

Sellers run into this constantly. Vendor blogs report error rates from roughly 8% to 14% on AI-written descriptions, but those figures are self-reported and I couldn't verify them, so don't quote them as gospel. The failure mode itself is real and easy to reproduce: ask for a description with almost no input and read the specs the model adds.

There's also a shopper-side change worth knowing about. Algolia put it this way on X:

"Your product pages aren't just selling to humans anymore. AI agents are reading them too. If an agent can't understand your products, attributes, availability, or context, it may never surface them to the shopper." — Algolia on X

That's the argument for structured, factual copy. A description that states material, size, compatibility and use case clearly is easier for both a person and a shopping assistant to understand.

Step 1: Build a fact sheet before you prompt

This is the step most people skip, and it's where most of the quality comes from. Make a short fact sheet for each product. Ten lines is plenty:

• Product name and type: exactly as it appears in your store.
• Verified specs: dimensions, weight, materials, capacity, colors, what's in the box. Copy these from your supplier sheet, not from memory.
• Who it's for: one specific buyer, such as "home brewers who want a single-cup dripper that fits a mug."
• Top three features: and the benefit of each, in plain words.
• Likely objections: "Will it fit my mug?", "Is it dishwasher safe?", "How long does shipping take?"
• Things you must not claim: anything you can't back up, such as certifications, health claims, or "best."
• Tone: two or three adjectives and one example sentence from your own store.
• Keywords: one main phrase a shopper would actually type, plus one or two related ones.

The "must not claim" line matters more than it looks. Models treat silence as permission. If you don't say the product isn't waterproof, the draft may imply it is.

Step 2: The prompt template (Shopify, Etsy, Amazon)

Here's the template I'd paste into any chat. Swap the bracketed parts for your fact sheet.

You are an ecommerce copywriter. Write a product description for [PLATFORM] using ONLY the facts below. If a detail isn't listed, don't mention it and don't guess. Facts: [PASTE FACT SHEET]. Audience: [BUYER]. Tone: [TONE]. Structure: one opening sentence that names the buyer's problem, three short benefit bullets, one paragraph covering size/material/what's included, and one line answering the top objection. Length: [WORD LIMIT]. After the copy, list every factual claim you made so I can check it.

That last sentence is the trick. Making the model list its claims turns review into a quick tick-through instead of a close read.

Then adjust per platform:

Platform	What to change in the prompt	Watch for
Shopify	Add your brand voice sample, ask for a short intro plus bullets and a meta description under 160 characters	Generic "lifestyle" fluff that doesn't match your brand
Etsy	Ask for the key phrase near the start, handmade details, materials, dimensions, processing time	Invented "handcrafted" or "sustainable" claims you can't back up
Amazon	Ask for five scannable bullets, each starting with the benefit, plus a plain-text description	Banned or restricted claims, keyword stuffing, made-up compatibility

Check each platform's current listing rules yourself before you publish. They change, and I'd rather you read the source than trust my summary.

Step 3: The 10-minute same-product test

Models differ more on product copy than people expect, and the differences are about restraint, not vocabulary. Here's how I'd compare them. Pick one product you know well, so you can spot errors instantly.

1. Minute 0-2: finish the fact sheet for that product. Include one deliberate gap, such as no weight listed.
2. Minute 2-5: send the identical prompt to two or three models. In Writingmate you can switch models inside one chat, so the prompt and fact sheet stay the same. Pick one flagship model, one cheaper fast model, and one you haven't tried.
3. Minute 5-8: score each draft with the table below.
4. Minute 8-10: pick a winner and save the exact prompt and model for that product type.

Check	Pass	Fail
Invented specs	Every number and material appears in your fact sheet	Any weight, size, material or rating you didn't supply
Handled the gap	Skipped the weight or flagged it as missing	Made up a plausible weight
Obeyed "do not claim"	No forbidden claims, even implied	Implied waterproof, eco-friendly, medical, etc.
Tone match	Sounds like your sample sentence	Reads like every other store
Answered the objection	Addresses the top objection in one line	Ignores it
Edit time	Under 3 minutes to ready	You rewrote most of it

I'm not going to hand you a "model X wins" verdict, because it depends on your product and prompt, and models get updated often. What I'd expect to see is the deliberate-gap test separating the drafts fast: a careful model leaves the weight out, a careless one invents it. Run it yourself in Writingmate's model list, which gives you access to 200+ models in one place, so you aren't juggling subscriptions to do a fair comparison.

Step 4: The pre-publish checklist for invented claims

Read the draft with the fact sheet next to it and check these in order. It takes about two minutes per listing once you've done a few.

• Numbers: every dimension, weight, capacity, count and percentage matches your source.
• Materials and origin: "stainless steel," "organic cotton," "made in" are in your supplier data.
• Superlatives: delete "best," "#1," "premium," "luxury" unless you can prove them.
• Safety, health, and certification words: "BPA-free," "FDA approved," "hypoallergenic," "waterproof." If it isn't on your documentation, it goes.
• Compatibility: "fits iPhone 15," "works with all machines." Confirm each one.
• Warranty, shipping, returns: these should come from your store policy, never from the model.
• Duplicate text: if you're using supplier copy as input, make sure you haven't just reworded a competitor's page.

The claims list the template asks for does most of this work. Compare it against the fact sheet and strike whatever isn't there.

Step 5: Scale to a large catalog without losing quality

Once one product type works, don't start fresh for the next 500. Here's the batch routine I'd use:

1. Group by product type. Mugs, candles and jackets need different prompts, so make one template per group.
2. Keep the fact sheet as a spreadsheet row. Columns for specs, buyer, objections, do-not-claim. The row becomes the input.
3. Pilot with 10 products from the group. Run the checklist on all ten and tally what the model gets wrong.
4. Fix the template, not the output. If it keeps adding "eco-friendly," add that to the do-not-claim line and rerun.
5. Spot-check 1 in 10 after the pilot, and every item in a regulated category.
6. Use a cheaper model for simple items and a stronger one for complex or high-margin products, based on your test results.

This is where multi-model chat earns its keep. When you're writing hundreds of descriptions, being able to swap models on the same conversation is much easier than moving between separate apps. Check Writingmate pricing for current plan limits before you commit to a big batch.

What sellers say, and what I couldn't verify

I tried to pull real seller opinions from Reddit's ecommerce communities, such as r/ecommerce, r/shopify and r/Etsy, but my tooling couldn't load Reddit pages, so I'm not going to put words in anyone's mouth. Go and search those subreddits for "AI descriptions" yourself. In my experience, the recurring themes are speed gains, generic-sounding output, and worry about inaccurate claims, which is exactly why the fact sheet and checklist above exist.

Vendor blogs also say that Etsy doesn't penalize AI-assisted listings as long as the copy is accurate and not duplicated. That's a vendor's claim. Read Etsy's own seller policy before you rely on it.

Free generator or general chat: which to use

Situation	Use
One or a handful of listings, quick draft	The free product description generator
Comparing tone and accuracy across models	Multi-model chat with the template above
Hundreds of items by product type	Spreadsheet fact sheets plus a saved template and spot checks
Regulated or high-risk products	Human-written claims, AI for structure only

The bottom line

AI is good at turning facts into readable copy and bad at knowing which facts are true. So give it the facts, tell it what it can't claim, make it list its claims, and check them. Do the 10-minute test once per product type, save what wins, and your descriptions will get better while your edit time drops.

Start with one product today. Fill in the fact sheet, run it through the generator, and see how many claims survive the checklist. That number tells you more than any review will.

See you in the next one!

Artem