Vemzio: Verified Escrow Marketplace & Builder Community

The Operating System for Serious Builders

Vemzio is a complete ecosystem for people who build and sell on the web: a verified marketplace to buy and sell SaaS, domains and digital products, surrounded by proof-of-work profiles, a sober technical community, a job board, leaderboards and valuation tools. It is not a classifieds site: it is a transactional platform with real escrow.

Escrow and Guaranteed Transfers

Transactions are modeled as a three-layer trust flow (supabase_schema.sql):

Typed listings: SaaS listings declare mrr, churn, growth, users and age; domains declare registrar and name; digital products (courses, templates, guides) deliver via download_url or a Markdown preview. Every listing carries is_verified and is_pre_public state.
Escrow transactions: every sale records amount, platform_fee and status (pending_payment → …), tied to a Stripe session (stripe_session_id) and a transfer (stripe_transfer_id).
Domain transfers: domain_transfers stores the encrypted auth-code, current/target nameservers and runs periodic DNS checks (last_dns_check) to certify that the transfer is completed, not merely paid for.

Digital products are delivered through purchases with a stripe_payment_intent, and premium listings are activated through the Lemon Squeezy webhook.

Platform at the Edge

The frontend is Astro 6 in SSR mode with @astrojs/cloudflare (deployed as a Worker with sessions on Cloudflare KV), while the most reactive areas —dashboard, app, marketplace— are React 18 islands using TanStack React Query for the data layer and Zustand for client state. The public API (/api/v1/listings) coexists with API keys (api_keys) in the same schema.

Data and State

The whole transactional model lives in Supabase (PostgreSQL) with per-role RLS policies, versioned Drizzle migrations and typed access. The server data layer (lib/data/db-service) feeds the homepage with featured listings, top builders by revenue and platform stats — always real numbers from the database, never placeholders.

Community and Organic Distribution

Beyond the marketplace, the platform works as an organic distribution engine: a Hacker News-style forum with nested Q&A threads and upvotes (qa_comments), meetups, jobs, a builder leaderboard, and public per-user pages (/u/[username]) that act as proof-of-work portfolios — and therefore as free high-DR backlinks for every listed project. The tools (valuator, starter) close the loop by providing utility before the transaction.

Vemzio proves a marketplace can be serious escrow, a community with standards and a platform business — with no servers to manage.