Sereni

A calm, trusted marketplace for digital products and services, built with SvelteKit and deployed on Vercel.

Tech Stack

• Framework: SvelteKit 2 (Svelte 5) + TypeScript
• Hosting: Vercel (@sveltejs/adapter-vercel, Node serverless runtime)
• Database: PostgreSQL via Prisma (Vercel Postgres)
• Object storage: Vercel Blob (@vercel/blob)
• Auth: JWT sessions, Argon2 password hashing, TOTP 2FA, SVG captcha
• Payments: NOWPayments (crypto top-ups → account balance)
• Notifications: Telegram Bot API
• Styling: TailwindCSS

Features

• User registration, login, logout, 2FA, recovery codes
• Account dashboard & balance management (top-ups, history)
• Multi-vendor catalog: Download, License, and Service product types (no physical goods)
• Cart & instant order fulfilment
• Seller dashboard (products, payouts, analytics)
• Admin panel (users, deposits, payouts, settings, Telegram config)

Product types

Type	Stock model	Delivery
DOWNLOAD	Unlimited	Full content delivered to every buyer
SERVICE	Unlimited	Instructions / booking / contact details delivered
LICENSE	One line per buyer	Next available line delivered; stock decrements

Local development

pnpm install
cp .env.example .env   # fill in values (see below)
pnpm prisma migrate dev
pnpm dev

App runs at http://localhost:5173.

Environment variables

See .env.example. Key ones:

Variable	Purpose
DATABASE_URL	Postgres connection (auto-set by Vercel Postgres)
BLOB_READ_WRITE_TOKEN	Vercel Blob token (auto-set by Vercel Blob)
JWT_SECRET	Session/captcha signing secret
NOWPAYMENTS_API_KEY	NOWPayments API key
NOWPAYMENTS_IPN_SECRET	NOWPayments IPN/webhook HMAC secret
PAYMENT_CALLBACK_URL	https://<domain>/api/payment/ipn
TELEGRAM_BOT_TOKEN	Telegram bot token
TELEGRAM_ADMIN_CHAT_ID	Channel/group ID for notifications
TELEGRAM_ADMIN_GROUP_ID	Channel/group ID for notifications

NOWPayments setup: in the NOWPayments dashboard, set the IPN callback URL to https://<your-domain>/api/payment/ipn and use the same IPN secret here.

Telegram setup: the bot must be an admin of the target channel/group to post.

Branding

The Sereni mark lives at src/lib/logo.svg. To regenerate all favicon / app-icon sizes:

pnpm favicons

To use a custom brand image instead, drop a licensed, un-watermarked PNG at static/brand-source.png and re-run pnpm favicons.

Deployment (Vercel)

1. vercel link (scope: koyagroup, project: sereni)
2. Attach a Postgres store and a Blob store to the project (auto-injects DATABASE_URL and BLOB_READ_WRITE_TOKEN).
3. Set the remaining env vars (JWT_SECRET, NOWPayments, Telegram).
4. pnpm prisma migrate deploy against the production database.
5. vercel --prod and attach the domain olesereni.site.