ListGroovy

Take a photo of any item. ListGroovy identifies it, writes titles and descriptions, suggests pricing from market data, and formats listings for eBay, Poshmark, and Mercari. One photo to a dozen live listings.

We grew to 370 users but found that resellers optimized hard on margins and resisted paying for tools that sat between them and their revenue. We decided to move on from the vertical.

The project taught me how to build multi-platform listing pipelines, how to price AI features for cost-sensitive users, and how to validate demand before scaling infrastructure. Those lessons fed directly into BuyerIQ, which monetized on day one.

370 Users

Built with

Next.jsOpenAIVision APIStripeTypeScriptTailwind CSS

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# ListGroovy Canonical URL: https://vladshumov.com/products/listgroovy/ Last updated: 2026-08-04 > AI-powered reselling. One photo, dozens of listings. 370 users. ## Summary AI-powered reselling. One photo, dozens of listings. 370 users. ## Role and timeline - Role: Founder - Year: 2025 - Last updated: 2026-08-04 ## Project facts ### What did ListGroovy do? ListGroovy identified an item from one photo, wrote listing copy, suggested a price from market data, and formatted listings for resale marketplaces. ### Which marketplaces did ListGroovy support? ListGroovy formatted listings for eBay, Poshmark, and Mercari. ### How many users did ListGroovy have? ListGroovy grew to 370 users before Vlad Shumov decided to move on from the resale software market. ## Technology and disciplines - Next.js - OpenAI - Vision API - Stripe - TypeScript - Tailwind CSS ## Links - Product site: https://listgroovy.com/ - Case study: none published - Products index: /products/ ## Site resources - /products/ - /games/ - /blog/ - /llms.txt - /llms-full.txt - /sitemap-index.xml - /media-sitemap.xml - /rss.xml