---
title: Hybrid Quiz Solver
emoji: 🤖
colorFrom: blue
colorTo: green
sdk: docker
pinned: false
---

# Hybrid Quiz Solver

An intelligent quiz-solving agent using LangGraph with Gemini and OpenAI fallback.

## Features

- 🔄 Smart API key rotation (Gemini)
- 🛡️ Automatic OpenAI fallback
- 📊 Visualization support
- 🎯 Multi-tool agent (web scraping, code execution, ML, etc.)
- 📝 Timestamped logging

## API Endpoints

### Health Check
```bash
GET /healthz
```

### Submit Quiz
```bash
POST /quiz
Content-Type: application/json

{
  "email": "your_email@example.com",
  "secret": "your_secret",
  "url": "https://quiz-url.com/q1.html"
}
```

## Environment Variables

Set these in Space Settings → Variables and secrets:

- `GOOGLE_API_KEY` - Primary Gemini key
- `GOOGLE_API_KEY_2` - Additional Gemini key (optional)
- `GOOGLE_API_KEY_3` - Additional Gemini key (optional)
- `GOOGLE_API_KEY_4` - Additional Gemini key (optional)
- `OPENAI_API_KEY` - OpenAI fallback key
- `OPENAI_MODEL` - OpenAI model (default: gpt-4o-mini)
- `TDS_EMAIL` - Your email
- `TDS_SECRET` - Your secret key

## Performance

- Average: ~73 seconds per question
- Supports 50+ question chains
- 3-minute timeout per question

## Architecture

```
Quiz URL → Agent → Tools (Web Scraper, Code Executor, etc.)
                ↓
           Gemini (with rotation)
                ↓
           Rate limit? → OpenAI Fallback
                ↓
           Submit Answer → Next Question
```