An AI-powered book companion that lets you upload PDFs and have voice conversations about their content. Upload a book, let AI break it down, and discuss it through natural voice chat — powered by Vapi, Next.js, and MongoDB.

Live site: agent-amphy.vercel.app

• Upload a PDF — Add any book and Agent Amphy extracts and processes the content into segments.
• Voice Chat — Start a real-time voice conversation with an AI that knows the book. Ask questions, get summaries, explore ideas, and deepen your understanding.
• Personal Library — Manage your uploaded books with search, delete, and cover images.
• Subscription Plans — Free, Standard ($7.99/mo), and Pro ($15/mo) tiers with different session limits, book caps, and session durations.

• Students who want to discuss textbooks and study material interactively
• Readers looking for a deeper way to engage with non-fiction
• Anyone who learns better through conversation than reading alone

• Node.js 18+
• A MongoDB database (Atlas or local)
• Clerk account (for authentication and subscriptions)
• Vapi account (for voice AI)

git clone https://github.com/your-username/agent-amphy.git
cd agent-amphy

npm install

Create a .env.local file in the root directory:

# MongoDB
MONGODB_URI=your_mongodb_connection_string

# Clerk
NEXT_PUBLIC_CLERK_PUBLISHABLE_KEY=your_clerk_publishable_key
CLERK_SECRET_KEY=your_clerk_secret_key
NEXT_PUBLIC_CLERK_PLAN_STANDARD=your_standard_plan_id
NEXT_PUBLIC_CLERK_PLAN_PRO=your_pro_plan_id

# Vapi
NEXT_PUBLIC_VAPI_API_KEY=your_vapi_api_key
NEXT_PUBLIC_ASSISTANT_ID=your_vapi_assistant_id

npm run dev

Open http://localhost:3000 in your browser.

npm run build
npm start

app/
  layout.tsx              # Root layout with Clerk provider
  globals.css             # Global styles and design system
  (root)/
    page.tsx              # Homepage — library + hero section
    books/
      [slug]/page.tsx     # Book detail — voice chat interface
      new/page.tsx        # Upload new book form
    subscriptions/
      page.tsx            # Pricing page
  api/
    books/                # CRUD + upload API routes
    vapi/                 # Voice AI search endpoint
components/               # UI components (BookCard, Hero, Transcript, etc.)
database/                 # Mongoose connection and models
hooks/                    # useVapi hook for voice session management
lib/                      # Server actions, utilities, constants

Deployed on Vercel. Push to your connected branch and Vercel handles the rest. Set the same environment variables in your Vercel project settings under Settings → Environment Variables.