Open-Prism

Open-source AI-powered LaTeX writing workspace with live preview.

Features

• AI-Assisted Writing - Powered by assistant-ui for intelligent LaTeX assistance
• Live PDF Preview - Real-time compilation and preview of your documents
• CodeMirror Editor - Syntax highlighting and LaTeX language support
• Local Storage - Documents saved in browser IndexedDB
• Dark/Light Theme - Automatic theme switching support

Quick Start

# Clone the repository
git clone https://github.com/assistant-ui/open-prism.git
cd open-prism

# Install dependencies
pnpm install

# Copy environment variables
cp apps/web/.env.example apps/web/.env.local

# Configure your environment variables in apps/web/.env.local
# - OPENAI_API_KEY: Your OpenAI API key
# - LATEX_API_URL: URL to the LaTeX compilation service
# - KV_REST_API_URL: KV REST API URL (for rate limiting)
# - KV_REST_API_TOKEN: KV REST API token

# Start development server
pnpm dev:web

Project Structure

open-prism/
├── apps/
│   ├── web/          # Next.js frontend application
│   └── latex-api/    # LaTeX compilation API (Hono + TeX Live)
├── packages/         # Shared packages (if any)
├── biome.json        # Biome linter configuration
└── turbo.json        # Turborepo configuration

apps/web

Next.js 16 application with:

• assistant-ui for AI chat interface
• CodeMirror for LaTeX editing
• react-pdf for PDF preview
• Upstash Redis for rate limiting

apps/latex-api

Hono-based API for LaTeX compilation:

• Accepts LaTeX source code
• Compiles using TeX Live (pdflatex)
• Returns compiled PDF

Deployment

Web App (Vercel)

1. Import the repository to Vercel
2. Set root directory to apps/web
3. Configure environment variables:
   • OPENAI_API_KEY
   • LATEX_API_URL
   • KV_REST_API_URL
   • KV_REST_API_TOKEN

LaTeX API (Docker)

cd apps/latex-api
docker build -t open-prism-latex-api .
docker run -p 3001:3001 open-prism-latex-api

Contributing

See CONTRIBUTING.md for development setup and contribution guidelines.

License

MIT