Personal project · 2025

Redii

Building

Two-sided marketplace connecting Venezuelan vehicle owners with verified mechanics. Web + mobile, single Next.js backend, RLS-first authorization, currently in active development.

The problem

Vehicle owners in Venezuela have no reliable way to find a trustworthy mechanic. The market is fragmented, informal, and opaque — no verified credentials, no price transparency, no service history, no guarantees, no accountability after the job is done. Mechanics with real skill have no digital footprint and depend on word of mouth.

What I'm building

A two-sided marketplace with a coordinator triage layer. Built as a Turborepo monorepo: Next.js 14 web app plus an Expo SDK 54 mobile app, sharing types and validation through five internal packages. Supabase RLS as the primary authorization boundary, Prisma for typed admin paths. Vehicle catalog with VIN decode proxied through a server route to keep the NHTSA API key off the client. Upstash Redis-backed rate limiting and Zod input validation are codified as endpoint templates.

Key decisions

Single backend for web and mobile

The Next.js app is both the frontend and the API. Mobile never touches Supabase write paths directly — it goes through the same routes the web uses. One source of truth for every endpoint, no parallel logic to maintain.

Dual auth without two codepaths

A single createClient() helper auto-detects Authorization: Bearer (mobile JWT) vs cookies (browser session) and creates the right Supabase client. All 39 API routes use it. No per-endpoint branching, no separate auth pipeline.

RLS-first data access

Supabase Row-Level Security is the primary authorization boundary. The JWT identifies the user the same way whether it came from a cookie or a bearer header — policies just work across surfaces. Application code can't accidentally leak data the policy says is forbidden.

Current status

In active development. Core auth, marketplace, and booking flows are implemented; the coordinator role and PRO subscription tier are next. Built deliberately for the Venezuelan/LATAM context — currency, vehicle make weighting, Spanish-first UX.

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