The Lovable Marketplace Kit is a complete, staged build plan for a real two-sided marketplace in Lovable: buyers browse and purchase, sellers open shops and get paid through Stripe Connect, and admins moderate. It is the hardest kind of app to prompt well, because money, trust and permissions all interact. The 13 prompts walk you through it in a safe order: storefront design system, database with row level security, roles and auth, seller onboarding, listings with image uploads, search and filters, listing pages with SEO, multi-seller checkout, fulfillment, reviews, messaging, admin moderation and launch hardening.

The included data-model.sql is the part most Lovable builds get wrong, so it is done properly: roles in a separate table, seller Stripe ids hidden with column-level grants, listing moderation enforced by triggers, atomic stock reservation, verified-purchase reviews derived from order items, and participants-only messaging with realtime. Edge Function designs cover Connect onboarding, an idempotent webhook, server-side pricing, fees, transfers on delivery, refunds and stale-order release.

A clickable prototype (storefront with filters, listing page with gallery and reviews, multi-shop cart and checkout, seller dashboard, admin review queue) acts as the visual spec, with all artwork drawn as original SVG. A built-in pack browser lets you search, copy and tick off each prompt offline. Honest note: Lovable is an AI builder; payments and permissions deserve your own review before launch, and the checklist in the last step is there for that.