Doro

An AI product prototyping platform inspired by Lovable. Turn natural-language prompts into runnable Next.js fragments, with iterative chat, code snapshots, live previews, and multi-project management.

Features

• Conversation-driven build flow; user messages trigger generation
• Inngest + Agent Kit orchestration; results are persisted and revisitable
• E2B Sandbox runs code fragments with embedded iframe preview
• Fragment cards for preview switching, refresh, copy link, and open in new tab
• Full-stack stack: Next.js App Router + tRPC + TanStack Query
• Prisma + Postgres for projects, messages, and fragment persistence
• Resizable split workspace optimized for chat + preview

Core Flow

1. User creates a project or sends a message
2. tRPC writes the message and triggers an Inngest event
3. The agent generates code and a summary in E2B Sandbox
4. The result is stored as a Fragment and is previewable
5. The UI polls for updates; selecting a Fragment shows it live

Tech Stack

• Frontend: Next.js 16 (App Router), React 19, Tailwind CSS, Shadcn UI
• Data: Prisma, PostgreSQL
• Orchestration: tRPC, TanStack Query
• AI Runtime: Inngest Agent Kit, Anthropic models, E2B Sandbox

Quick Start

1) Install dependencies

npm install

2) Configure environment variables

Create a .env file with:

DATABASE_URL="postgresql://USER:PASSWORD@HOST:PORT/DB_NAME"
NEXT_PUBLIC_APP_URL="http://localhost:3000"
ANTHROPIC_API_KEY="your-anthropic-api-key"
ANTHROPIC_API_BASE_URL="https://api.anthropic.com" # Optional: proxy or private gateway
E2B_API_KEY="your-e2b-api-key"

If you use Inngest Cloud, also add the required signature/event keys.

3) Initialize the database

npx prisma migrate dev

4) Start the dev server

npm run dev

Open http://localhost:3000.

5) (Optional) Start Inngest Dev Server

npx inngest-cli dev -u http://localhost:3000/api/inngest

Project Structure

src/
  app/                     # Next.js App Router
  inngest/                 # Inngest client & functions
  modules/
    messages/              # Message tRPC + UI
    projects/              # Project tRPC + UI
  trpc/                    # tRPC setup and client
prisma/                    # Prisma schema & migrations
public/                    # Static assets

Scripts

npm run dev      # Local development
npm run build    # Production build
npm run start    # Production server
npm run lint     # Lint checks

Contributing

Issues and PRs are welcome. Let’s make Doro a truly usable Lovable alternative.