# How to write your catalog descriptions with AI without producing filler > Guide to AI product descriptions: a real-data template, writing with Jasper or Claude and the quality control that keeps invented specs out. - Canonical: https://serchai.com/en/guides/ai-product-descriptions/ - Site: Serchai (https://serchai.com) — AI tools comparator - Language: en - Updated: 2026-07-26 --- ## Tools you will use - [Jasper](https://serchai.com/en/reviews/jasper/) — Marketing copy with your brand voice applied to everything it generates. - [Claude](https://serchai.com/en/reviews/claude/) — Anthropic's AI assistant for writing, analysing and thinking through documents. - [Kagi](https://serchai.com/en/reviews/kagi/) — The paid search engine with no ads and no tracking. ## The steps, in short 1. **Gather the real data for every product** — Build a table with measurements, materials, uses and objections that the AI will use as raw material. 2. **Research what your buyer actually asks** — Find the real questions about the product in forums and reviews so the page answers them before purchase. 3. **Generate the descriptions with brand voice** — Produce the catalog in batches keeping the same tone and structure across every page. 4. **Review, adjust and measure** — Check that no invented data slipped in and watch conversion and returns after publishing. > **TLDR:** A product description generated without real data is filler that does not sell and generates returns on top. The flow that works starts with a table of measurements, materials and uses for every reference, continues by researching what buyers ask, and only then generates. Jasper holds tone across large catalogs with a team, Claude covers the solo writer for $17 a month. This guide is for anyone with a catalog to describe: stores with hundreds of references, brands releasing collections every season, marketplace sellers competing in the same grid as twenty others. The problem is scale, because writing two hundred pages by hand is unviable and publishing them empty is worse than not publishing. The rule that orders everything: AI knows nothing about your product. What it writes will be exactly as good as the data you give it, and what it invents ends up as a return. ## 1. Gather the real data for every product This step is boring and it decides the result. Build a table where every product carries its hard data: exact measurements, materials, weight, box contents, compatibility, care and warranty. Add two columns almost nobody fills in that sell the most: what it is genuinely used for and who it is not right for. That last column separates an honest page from a brochure. Saying a backpack does not fit laptops over fifteen inches prevents a return and signals that you know your subject, which is exactly what makes people buy. With that table, generation stops inventing because it has something to draw on. Without it, any tool produces the same generic paragraph about quality and design that says nothing. ## 2. Research what your buyer actually asks Pages that convert answer doubts before they surface. To learn which ones, you have to leave your own site: forums, reviews of similar products, marketplace questions, comments on industry videos. [Kagi](https://serchai.com/en/reviews/kagi/) performs in this search because its lenses filter by forums and communities, and its domain controls let you bury the page aggregators that pollute any product search. From $5 a month with a free trial. What you are after is the five questions people repeat about products like yours: sizing, compatibility, durability, maintenance, what is included. Those five questions, answered on the page, are worth more than three paragraphs of adjectives. ## 3. Generate the descriptions with brand voice With data and questions in hand, generation is fast. Tool choice depends on your size. If several people write and the catalog is large, [Jasper](https://serchai.com/en/reviews/jasper/) stores the brand voice profile and applies it to every page, which is what stops two hundred descriptions sounding like two hundred different authors. From $59 a month with a seven-day trial, a price that only makes sense with volume and a team. If you write alone, [Claude](https://serchai.com/en/reviews/claude/) does the same job from $17 a month: keep the style guide and the data table in a project and every new page comes out with those instructions already applied, no pasting. Less automation than Jasper, a third of the cost. Whichever you pick, fix one structure for every page: a sentence on what it is and who it is for, hard data in a list, two or three concrete uses and the resolved doubts. Repeated structure is what makes a catalog readable at speed. ## 4. Review, adjust and measure Quality control has one non-negotiable rule: no data absent from your table may appear on the published page. Models fill gaps confidently, and an invented measurement or a compatibility that does not exist gets paid for in returns and complaints. Also check that each page says something the others do not. If reading three in a row they sound identical, the problem is that step one's table was empty, not that the model writes badly. After publishing, watch two metrics: page conversion and return rate with its reason. Returns from unmet expectations signal that a description promised what the product does not deliver, and that gets fixed in the text, not the product. With pages written, the next step is stopping customer service from eating your time: that is in the [AI customer service](https://serchai.com/en/guides/ai-customer-service/) guide. Every task in the sector lives in [AI for e-commerce](https://serchai.com/en/ai-for/ecommerce/). ## Common mistakes Generating without data and publishing. This is the origin of pages talking about premium quality and unique experiences without saying how big the product is. They do not convince and they do not rank. Publishing the same text with the name swapped. Two hundred cloned pages are exactly what search engines have spent years learning to filter, and what makes a catalog look like a reseller's. Omitting who the product is not for. It looks like it costs sales and the opposite happens: it lifts conversion among people who fit and cuts returns from people who do not. Forgetting mobile. Most purchases are decided on a small screen. If your page opens with three paragraphs before the first useful fact, nobody reaches the fact. ## Frequently asked questions ### Does Google penalize AI-generated descriptions? What gets penalized is valueless content, however it was written. A description with real data, concrete uses and resolved doubts is legitimate content even if the draft came from a model. A dump of generic, identical texts is what gets filtered. ### Jasper or a generalist assistant? It depends on size. With a team and a large catalog, Jasper's brand voice prevents the patchwork and justifies the price. Writing alone, Claude does the job for a fraction and consistency comes from the style guide stored in its project. ### How long does describing a hundred-product catalog take? Most of the time goes into step one: gathering real data. With the table built, generating and reviewing a hundred pages is a couple of days of work, against weeks of writing them by hand. ### Should I use the manufacturer's text? Copying it verbatim is the worst case: it is the same text twenty other sellers have and gives no reason to buy from you. Use it as a source of hard data and write your own page on top.