D&D AI Dungeon Master

An AI-powered Dungeons & Dragons 5th Edition game where Claude acts as the Dungeon Master.

Features

• Full character creation (race, class, ability scores) with randomize option
• D&D 5e mechanics (dice rolls, AC, spell slots, combat, loot)
• AI DM generates narrative, enemies, and story dynamically
• Character sheet sidebar with live HP, inventory, combat log
• Open-ended — play as long as you want

Deploy to Render

1. Push to GitHub

git init
git add .
git commit -m "D&D AI DM"
git remote add origin https://github.com/YOUR_USER/dnd-ai-dm.git
git push -u origin main

2. Create Render Web Service

1. Go to https://dashboard.render.com
2. Click New → Web Service
3. Connect your GitHub repo
4. Settings:
   • Runtime: Node
   • Build Command: npm install
   • Start Command: npm start
   • Instance Type: Free (or Starter for better performance)

3. Add Environment Variable

In Render dashboard → Environment:

• Key: ANTHROPIC_API_KEY
• Value: Your Anthropic API key (get one at https://console.anthropic.com)

4. Deploy

Click Deploy. Your game will be live at https://your-service.onrender.com

Cost

Uses Claude Haiku 4.5 — the most cost-effective model:

• ~$0.001 per game turn (input ~500 tokens + output ~400 tokens)
• A full 2-hour session (~60 turns) costs about $0.06
• Rate limited to 15 requests/minute per IP

Local Development

export ANTHROPIC_API_KEY=your_key_here
npm install
npm start
# Open http://localhost:3000

Tech Stack

• Backend: Node.js + Express (API proxy, rate limiting)
• Frontend: Vanilla JS (no framework, single HTML file)
• AI: Claude Haiku 4.5 via Anthropic API
• Styling: CSS with Cinzel + EB Garamond fonts