Drop in your photos, it writes the listings. Share the link. Buyers reserve what they want. Host it free on your own GitHub, or let us host it for pennies. Hand-editing works too. All open source.
See a live example.
GitHub Pages, Vercel, Netlify, or Cloudflare Pages. All free, all tied to the same JSON files so you can move between them.
How to deploy →Sign up, add items in a web form (no JSON, no git), share a short URL like yrdsl.app/you/sale. About $0.10 a sale per month; we handle the hosting and updates. No commission.
Sign up →On hosted, add items in a web editor: pick a photo, type a title and price, hit save. No JSON, no git, no command line.
Self-hosted? Edit site.json + items.json in any text editor. Same data shape, so a sale moves between modes without rewrites.
Through the MCP, Claude can add items, write descriptions, set prices, and attach photos from a chat. Works on hosted (via API) and self-hosted (via your local repo).
Install as a Claude Code plugin, or wire the @yrdsl/mcp stdio server into any MCP client.
The hosted API is a REST endpoint with a bearer token. Wire it to any chat platform and an LLM to manage a sale by message.
Full walkthrough: Build a WhatsApp bot in the MCP docs.