Developer Overview

Vezta is a monorepo with three code subprojects (frontend, backend, docs) plus a planned mobile app:

Subproject	Stack	Port	Description
`vezta-fe/`	Next.js 16, React 19, Tailwind v4, TanStack Query v5	3000	Web frontend
`vezta-be/`	NestJS, Fastify, Prisma, PostgreSQL, Redis, BullMQ	3001	Backend API (9-container worker split per VM)
`vezta-mobile/`	Expo SDK 55, React Native, NativeWind v4, Reanimated v4	--	Mobile app (planned, designs only)
`vezta-docs/`	Next.js, Fumadocs, MDX	--	This documentation site

Data Flow

API Contract: Backend auto-exports openapi.json. Frontend uses Kubb to generate TypeScript types, Zod schemas, and TanStack Query hooks from this spec.
Real-Time: Socket.IO at /ws namespace with 9 channels for prices, orderbook, trades, crypto prices, orders, notifications, portfolio, copy-trade, and signals (news + insider alerts).
Auth: Wallet-based authentication (Solana + EVM) plus Google OAuth, with three-cookie web session (refresh_token httpOnly, logged_in, beta_access) and 15-min access tokens stored in memory.
Trading: Polymarket via per-user Gnosis Safe (1-of-1) on Polygon, gasless via Builder Relayer. Kalshi via DFlow (tokenized markets on Solana, non-custodial -- user signs each trade with their own Solana wallet).
Worker split: 9 containers per VM (api + traders + market + misc + websocket + rtds + ai + sports + combos) sharing the same image. Domain ownership enforced at the provider level via backgroundOnly([Processor, Scheduler], '<domain>').