MarketListing - Sell Project

MarketListing turns a 3D print into a finished Etsy listing in about two minutes — photos in, SEO-optimised listing out, published straight to your shop through the official Etsy API. WHAT MAKES IT DIFFERENT Most listing tools ask you to write a description first. This one doesn't. You give it a name and your photos, and GPT-4o looks at the images to understand what the object is — material, finish, colours, likely buyers — then writes the title, the description and 13 SEO tags built for how people actually search on Etsy. The second thing no other Etsy tool does: pricing. Enter grams of filament and hours of printing (straight from your slicer) and it calculates your real cost, applies your margin, and rounds to a psychological price. It speaks the language of people who print, not of generic e-commerce. WHAT IT DOES • Guided 5-step flow: name, photos, price, listing, publish • AI listing generation from photos (vision) — title, description, 13 tags, materials, occasion, style, keywords, SEO advice • Filament palette: set the colours you actually stock and every generated listing offers only those — no more AI inventing colours you can't print • Model catalogue with automatic pricing from grams + hours + your rates • Publishes to Etsy: draft or live, images uploaded in your chosen order • Orders page: live from Etsy, with revenue stats and per-country breakdown (cancelled and refunded orders excluded automatically) • Shipping manager: see every destination's cost and apply a zone-based price list in one click • Vacation mode: pick your return date and processing times update across all shipping profiles, restored with one click when you're back • Scheduled publishing, full activity log, dark mode, installable on iPhone/Android as a home-screen app TECH Next.js 15 (App Router) · TypeScript, strict · Tailwind CSS with a token-based design system · Supabase (auth, Postgres with row-level security, storage) · OpenAI GPT-4o (vision + JSON schema output) · Etsy Open API v3 with OAuth2 PKCE · deploys to Netlify, Vercel or Render. Credentials are encrypted at rest with AES-256-GCM and never returned to the browser. Rate limiting per operation, sanitised logs, automatic token refresh. Roughly 120 files, fully typed, commented in a way a new owner can follow. STATUS Running in production on a real Etsy shop since August 2026. Listings created and published through it are live and selling. WHAT THE BUYER GETS Full source code, database schema, deployment configuration for three hosts, and a setup guide. WHAT THE BUYER PROVIDES Their own OpenAI API key, their own Supabase project (free tier is enough), and their own registered Etsy app — Etsy requires each seller to register and get approved for their own API access, so this cannot be transferred. Not affiliated with or endorsed by Etsy, Inc.