This is a Next.js project bootstrapped with create-next-app.

A Mermaid diagram generator with multi-AI provider support and automatic fallback.

• 🎨 Generate Mermaid diagrams from natural language
• 🔄 Multi-provider support (Gemini, OpenAI) with automatic fallback
• 🛡️ Resilient API handling - if one provider fails, automatically tries the next
• ✨ Modern UI with interactive diagram preview

npm install

Copy .env.example to .env.local and add at least one AI provider API key:

cp .env.example .env.local

Required Environment Variables:

• At least one of the following is required:
  • GEMINI_API_KEY - Get from Google AI Studio
  • OPENAI_API_KEY - Get from OpenAI Platform

Optional:

• OPENAI_MODEL - OpenAI model to use (default: gpt-4o-mini)

The system will automatically try providers in this order:

1. Gemini (if GEMINI_API_KEY is set)
2. OpenAI (if OPENAI_API_KEY is set)

If one provider fails or reaches quota limits, it automatically falls back to the next available provider.

npm run dev
# or
yarn dev
# or
pnpm dev
# or
bun dev

Open http://localhost:3000 with your browser to see the result.

You can start editing the page by modifying app/page.tsx. The page auto-updates as you edit the file.

This project uses next/font to automatically optimize and load Geist, a new font family for Vercel.

To learn more about Next.js, take a look at the following resources:

• Next.js Documentation - learn about Next.js features and API.
• Learn Next.js - an interactive Next.js tutorial.

You can check out the Next.js GitHub repository - your feedback and contributions are welcome!

The easiest way to deploy your Next.js app is to use the Vercel Platform from the creators of Next.js.

Check out our Next.js deployment documentation for more details.