ScriptAI Pro

AI-powered viral Instagram Reels script generator for Indian tech audiences.

Tech Stack

• Frontend: Next.js 14 + Tailwind CSS
• Backend: FastAPI + LangGraph
• LLMs: Claude 3.5 Sonnet (writing) + Perplexity sonar-pro (research) + GPT-4o-mini (analysis)
• Vector DB: ChromaDB (local, for style training)
• API Gateway: OpenRouter (unified LLM access)

Features

• Deep investigative research via Perplexity
• Viral hook generation (5 variants per script)
• Multi-hook analysis with scoring
• Style learning from trained scripts
• Real-time streaming output
• India-focused content localization

Local Development

Backend

cd backend
python -m venv venv
venv\Scripts\activate  # Windows
pip install -r requirements.txt
cp .env.example .env
# Add your OpenRouter API key to .env
uvicorn app.api.server:server --reload --port 8000

Frontend

cd frontend
npm install
cp .env.example .env.local
npm run dev

Deployment

Backend (Render)

1. Create a new Web Service on Render
2. Connect your GitHub repo
3. Set Root Directory: backend
4. Build Command: pip install -r requirements.txt
5. Start Command: uvicorn app.api.server:server --host 0.0.0.0 --port $PORT
6. Add Environment Variable: OPENAI_API_KEY (your OpenRouter key)

Frontend (Vercel)

1. Import project on Vercel
2. Set Root Directory: frontend
3. Add Environment Variable: NEXT_PUBLIC_API_URL (your Render backend URL)

Environment Variables

Backend (.env)

OPENAI_API_KEY=sk-or-your-openrouter-key

Frontend (.env.local)

NEXT_PUBLIC_API_URL=http://localhost:8000

API Endpoints

• GET / - Health check
• POST /train_script - Train on a script example
• POST /generate_stream - Generate script (streaming)

Project Structure

.
├── backend/
│   ├── app/
│   │   ├── agents/          # LangGraph nodes & prompts
│   │   ├── api/             # FastAPI server
│   │   ├── db/              # ChromaDB storage
│   │   ├── schemas/         # Pydantic models
│   │   └── utils/           # Helpers
│   └── requirements.txt
├── frontend/
│   ├── src/app/             # Next.js pages
│   └── package.json
└── README.md