You've put an item up for sale, the photo is decent, the price is reasonable, and yet nothing happens. The problem almost always comes down to the text. On Leboncoin, just like on Vinted, the listing is the only thing that speaks to the buyer when you're not there. A vague title, a three-word description, or missing information, and the buyer moves on to the next listing in a second.
The good news: a listing that sells always follows the same recipe. A precise title, a fair price, a description that answers questions before anyone has to ask them, good photos, and the right keywords. In this guide, you'll see what separates a listing that just sits there from one that triggers messages, then three concrete methods to write it, from the fastest (with AI) to the most hands-on. By the end, you'll be able to produce a ready-to-publish listing in a few minutes.
Why Most Listings Don't Sell
Most listings don't sell because they describe an object instead of making people want to buy it. The classic mistake is writing what you see ("gray sofa, good condition") instead of writing what the buyer is looking for: the dimensions, the brand, the year, the reason for selling, the real condition, and what's included.
A buyer on the fence always asks the same questions. Will it fit in my place? Is it really in good condition? Why is it being sold? Can I come pick it up this weekend? If your listing doesn't answer, two things happen: either the person sends you a message to ask (and many don't have the patience), or they give up. Every unanswered question is a sale slipping away.
The other big obstacle is a lack of trust. On a peer-to-peer platform, the buyer doesn't know you. A description that's too short or full of typos sends a negative signal, even subconsciously. On the other hand, a detailed listing that's honest about flaws and well written puts people at ease. Selling online is one of the simple ways to make money with AI without any technical skills, as long as you take care of that first written contact.
The Six Ingredients of a Listing That Sells
A listing that sells rests on six elements: a precise title, a fair price, a clear description, good photos, the right keywords, and a quick reply. Here's how to work on each one.
- The title. This is what decides whether people click. Include the brand, the model, the size or color, and a word that reassures. "Zara wool camel coat size M, excellent condition" beats "nice coat" every time. On Vinted, brand and size are essential; on Leboncoin, the brand and the exact model.
- The price. Look at what identical items actually sell for, not the ones that have been listed for three months. A price 10 to 15% below market sells fast. If you're open to haggling, say so ("price slightly negotiable").
- The description. Answer the questions in order: what it is, the exact condition (with the flaws), the dimensions or size, what's included, and how it changes hands (in-person pickup, shipping, location).
- The photos. Daylight, a neutral background, several angles, and a photo of any flaws. Visual honesty avoids disputes and reassures.
- The keywords. Think about the terms the buyer types. For a console, add "controller," "cables," "original box." These words help your listing rise in search results.
- Responsiveness. A reply within the hour multiplies your chances. On Vinted, sellers who respond quickly rank better.
Once these six elements are in place, writing takes just a few minutes. All that's left is choosing how you produce the text.
Method 1: Write Your Listing with Skilzy's AI
The fastest way to get a ready-to-publish listing is to have it written by a guided agent in Skilzy's AI Lab: you answer two or three questions, and it writes the full text. No need to know how to craft a prompt, the agent asks you the right questions on your behalf.
Skilzy is a French platform for learning and using AI in everyday life. Its AI Lab integrates the real tools with credits included, so you use AI directly within the platform without stacking up subscriptions. For a listing, you pick the matching guided agent, you provide the item, its condition, and its price, and it hands you a catchy title plus a structured description, with the keywords already in place.
The path within the app: you open the AI Lab, the Home tab, the Guided section, then you select the writing agent. It asks two or three questions (what are you selling, what condition, what price, how does it change hands), and it writes. You read it over, tweak a detail, and publish.
You can try it without a credit card thanks to the discovery demo: 7 days with 1 image, 1 video, 1 track of music, and 10 messages. That's more than enough to write several listings and see the difference. After that, plans start at €29.90/month with no commitment, with two state-recognized certifications that can be funded if you want to go further.
This approach really pays off if you sell regularly, for example in buy-and-resell or a serious wardrobe clear-out. It's also a directly marketable skill: writing listings and product sheets for merchants is one of the services covered in Skilzy's AI freelancing program, which shows how to turn these habits into income. If the topic interests you, our article on becoming an AI freelancer details the services to sell and the going rates.
Method 2: Use a Free AI Tool Like ChatGPT
You can also write your listing with a free AI tool like ChatGPT, as long as you give it a good prompt. The free version is plenty for this kind of short text. The only work on your side is describing your item well, because the AI can't guess what it doesn't see.
Here's a prompt template you can copy and fill in:
Write a sales listing for [Leboncoin / Vinted]. Item: [name, brand, model, size or dimensions]. Condition: [new, excellent, good, with these flaws: ...]. Price: [amount], negotiable or not. Handover: [in-person at ..., or shipping]. Give me a catchy title under 60 characters, then a 4-to-6-line description, honest, with useful keywords for search. Warm and direct tone.
The upside: it's free and available everywhere. The limits: you have to open an account on a separate tool, copy-paste the result over to your platform, and you still have to write the prompt yourself every time. If you're doing a lot of listings back to back, it gets repetitive, whereas a guided agent already handles the formatting for you. To go further with this kind of automation, our guide on AI workflows for creating content shows how to save time on your texts at scale.
Method 3: Write Your Listing by Hand with a Template
If you'd rather write everything yourself, a five-block template is enough to structure an effective listing. No AI needed: you simply fill in each part in order.
- Title. Brand + model + size or dimension + condition. Example: "Rockrider 27.5-inch mountain bike, excellent condition."
- The item in one sentence. What it is and who it's for. "Full-suspension mountain bike, ideal for trails and city riding."
- The condition, honestly. "Excellent overall condition, a few micro-scratches on the frame, brakes serviced in June."
- The practical details. Dimensions or size, accessories included, year, any warranty.
- Handover and contact. "In-person pickup in Lyon's 3rd arrondissement, or Mondial Relay shipping at your cost. Available in the evenings and on weekends."
This format works because it answers the questions in the order the buyer asks them. Keep sentences short, avoid ALL CAPS everywhere (it feels like shouting), and proofread for typos. A handwritten listing can sell perfectly well; it just takes a little more discipline to not forget anything.
Adapting Your Listing to Leboncoin or Vinted
Leboncoin and Vinted don't expect the same listing: one favors the object and the price, the other fashion and trust between members. The same text copy-pasted onto both platforms will rarely be optimal.
On Leboncoin, you sell everything (furniture, appliances, tech, cars, fashion). The buyer often searches locally, in-person pickup is the norm, and price matters enormously. Bank on precise dimensions, a well-chosen category, and a clear location. The platform's posting rules require accurate, non-misleading listings; you can check them in the Leboncoin help center.
On Vinted, it's mostly fashion and accessories, with a buyer-protection system and ratings that build your reputation. Here, brand, size, and condition come first, style hashtags help you get found, and shipping is built in. A slightly more personal tone works better ("worn twice, too small for me"). The best description practices are explained in the Vinted help center.
In practice: keep the same base of information, but reorder it. For Leboncoin, the title highlights the object and its key feature; for Vinted, brand and size go up front. This logic of adapting is exactly what AI does well: you give it the info once, and it produces two calibrated versions.
Conclusion
A listing that sells is no mystery: a precise title, a fair price, an honest description that answers the questions, good photos, and a quick reply. You can write it yourself with a template, hand it to a free tool, or produce it in a few minutes with a guided agent. Pick the method that fits your pace, test it on one item, and watch how many messages you get. The difference is often visible within the first week.
