Marketplace Starter is the full source code behind a real, production-grade marketplace — Next.js + Supabase + Tailwind. Clone it, rebrand it, ship it.
One-time payment · full source code · yours forever · no subscription
Why it pays for itself
Building marketplace plumbing from scratch is a $15k–$30k, full-quarter project. Here it's the price of an afternoon — already done, tested and battle-proven in production.
automated tests (Vitest) — typed, linted, build-gated
full source code — no black boxes, no SaaS lock-in
Everything's already wired
Months of the boring, critical engineering every marketplace needs, done for you.
Email + Google OAuth, Row-Level Security, admin 2FA (TOTP), dual captcha, rate limiting, audit log, GDPR delete.
Pending → published → rejected workflow, edit-as-revision, tiers, promotions with auto-expiry, boosts & vanity slugs.
Reviews with anti-fraud detection, favorites, web push notifications, and a cost-capped AI support chat.
Cloudinary with render-time watermarking, smart face-crop, in-browser editor and client-side compression.
Hand-tuned mobile and desktop layouts — not a squished desktop site. Ships with a polished dark mode + light theme.
Dynamic sitemap, JSON-LD, canonicals, IndexNow, i18n (ES/EN/PT) and multi-currency with live exchange rates.
Sentry, Vercel Analytics, Resend email, encrypted off-site backups + restore runbook, 6 scheduled cron jobs.
Credits/listing logic wired in. Add the LATAM Payments add-on for MercadoPago + PIX + crypto with one flag.
Pluggable identity verification (add-on). Private RLS-scoped storage with encrypted off-site backups.
Simple, one-time pricing
Pay once. Own the source forever. Add payments and KYC when you're ready.
Verification add-on (KYC) also available separately — $29.
Good to know
The complete source code of the Marketplace Starter boilerplate (Next.js + Supabase + Tailwind), delivered as access to a private GitHub repository. You can clone it, rebrand it and deploy it to your own infrastructure.
After purchase you'll receive a license key and instructions by email. Reply with your GitHub username and we'll add you as a collaborator to the private repository within 24 hours.
The Single Developer license lets you use the code on your own projects. The Agency / Unlimited license lets you use it on unlimited client projects. Reselling the boilerplate itself is not permitted.
No. The base kit is fully functional. Payments (MercadoPago + PIX + crypto) and identity verification (KYC) are optional add-ons that activate via feature flags when you need them.
Checkout is handled by Lemon Squeezy as Merchant of Record (they handle invoicing and VAT). Because this is instant-access source code, sales are generally final — reach out if anything's wrong and we'll make it right.
Yes — email us anytime at contact@kelflow.com. We answer setup and deployment questions.
Stop rebuilding the same plumbing. Get the full source for the price of an afternoon.
Get Marketplace Starter — $89