Agentic Search Is Changing How Buyers Find Resale Items

If you sell on eBay, Poshmark, Mercari, Depop, Amazon, or any other marketplace, the way buyers search is about to matter even more than it already does. In a recent TreeCAT Chat conversation, Michelle explored what buyers actually want in June 2025 and how agentic search is reshaping resale discovery.

The big takeaway: sellers need to stop thinking only like sellers and start thinking like buyers.

What Buyers Really Want

Before diving into platforms, Michelle and her guest Rowan outlined some universal buyer truths. These are the basics shoppers expect whether they are buying new, used, vintage, or refurbished:

• A good deal
• Plenty of selection without being overwhelmed
• A trustworthy platform or seller
• Fast, affordable shipping
• Accurate item descriptions
• Easy checkout
• Reliable customer support

For resale and re-commerce sellers, this is the foundation. If your listing doesn’t help buyers feel confident, it’s already at a disadvantage.

Why Search Is Becoming More “Agentic”

Michelle described agentic search as a more conversational, interactive way to shop. Instead of typing a few keywords and endlessly scrolling, buyers can ask search tools to narrow things down in a more human way.

For example, instead of searching just for:

men's green shirt size XL

a buyer might say:

I need a green XL short-sleeve shirt for my first job interview under $15

That kind of contextual search is becoming more common with tools like ChatGPT, marketplace AI features, and shopping assistants. It’s a shift from keyword matching to intent matching.

What the Experiment Showed on Marketplaces

Michelle tested the same shopping need across several platforms: eBay, Poshmark, Mercari, Depop, Amazon, and ChatGPT.

The results showed some clear patterns:

• eBay surfaced mixed-quality matches, including irrelevant or misleading listings
• Poshmark and Mercari did better when the search was more specific, but still depended heavily on listing quality
• Depop skewed younger and trendier, but not always practical for a specific use case
• Amazon felt more structured because of certified sellers and AI support like Rufus
• ChatGPT was less about direct results and more about helping organize the search intent

The lesson? Buyers don’t just want a product. They want the right product for the right situation.

SEO and Listing Tips for Agentic Search

Michelle ended with practical advice for sellers who want to show up in this next wave of search behavior. Here are the most important strategies:

1. Think beyond one marketplace
   Don’t optimize only for eBay, Poshmark, or Mercari. Agentic search may pull from across the web.

2. Focus on utility
   Include what the item is for, not just what it is. Think: “job interview,” “summer barbecue,” “wedding guest,” or “casual office wear.”

3. Put important terms early
   Since mobile users may not see the full title, lead with the most relevant details.

4. Use clean, crisp photos
   Most shoppers browse on phones, so your images need to be clear and easy to understand at a glance.

5. Include synonyms and related terms
   A buyer might search “joggers,” “sweatpants,” or “lounge pants.” Use language people actually type.

6. Add occasion-based context
   A listing becomes more searchable when it connects the item to a use case.

7. Tell a story in the description
   Descriptions that explain when, where, and why someone would wear or use the item can help both buyers and search systems understand the listing.

Final Thoughts for Resellers

Agentic search is still evolving, but the direction is clear: buyers are going to expect shopping to feel more personal, more conversational, and more useful. That means sellers need to create listings that answer real-world intent, not just keyword strings.

If you’re in resale or re-commerce, now is the time to prepare. Think like a buyer. Write like a human. And make sure your listings can be found not just by marketplaces, but by the next generation of search tools.