The best place on the internet for anyone learning a programming language. An AI-powered platform for mastering programming through curated challenges and instant mentorship. Inspired by RareCode.ai.
- Multi-language support — currently featuring 155+ curated challenges for Rust, with architecture designed to expand to any programming language
- Curated learning paths — from "Hello, World!" to advanced capstone projects, covering language-specific concepts and best practices
- Monaco code editor — VS Code-quality editing with syntax highlighting for multiple languages
- Live code execution — compile and run code in various languages (currently Rust via Rust Playground API)
- AI mentor chat — get hints, explanations, and feedback on your code (uses OpenAI API, with a built-in fallback)
- Progress tracking — completed challenges are tracked in the database with a visual progress bar
- Dark theme — clean, focused UI designed for extended coding sessions
# Install dependencies
bun install
# Copy env example and configure
cp .env.example .env.local
# Configure required env vars:
# - DATABASE_URL (Supabase PostgreSQL)
# - NEXTAUTH_SECRET (generate with openssl rand -base64 32)
# - NEXTAUTH_URL (http://localhost:3000)
# - GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET (for OAuth)
# - (Optional) OPENAI_API_KEY for full AI mentorship
# Run the dev server
bun run devOpen http://localhost:3000 to start learning. Currently featuring Rust challenges with more languages coming soon.
- Next.js 16 (App Router, TypeScript)
- Prisma + PostgreSQL (Supabase)
- NextAuth for authentication
- Tailwind CSS for styling
- Monaco Editor (same editor as VS Code)
- Language execution APIs — currently Rust Playground API, designed to support multiple language runtimes
- OpenAI API (optional) for AI mentor chat
Note: This is our first language. We're designed to expand to Python, JavaScript, Go, and more.
| Category | Challenges | Difficulty |
|---|---|---|
| Basics | Hello Rust, Variables, Data Types, Functions, Control Flow, Loops | Beginner |
| Ownership & Borrowing | Ownership, References, Slices | Intermediate |
| Structs & Enums | Structs, Enums & Pattern Matching | Intermediate |
| Error Handling | Option<T>, Result<T, E> | Intermediate |
| Collections | Vectors, HashMaps | Intermediate |
| Traits & Generics | Traits, Generics, Lifetimes | Advanced |
| Functional Patterns | Closures & Iterators | Advanced |
| Capstone | Mini CLI Statistics Tool | Advanced |
Our goal is to become the best place on the internet for anyone learning a programming language. We're starting with Rust because of its growing importance in systems programming, blockchain, and performance-critical applications.
The platform is architected to support any programming language — we plan to expand to Python, JavaScript/TypeScript, Go, and other popular languages based on community demand.
The AI mentor works in two modes:
- With OpenAI API key — full conversational AI mentorship powered by GPT-4o-mini
- Without API key — built-in fallback that provides hints, concept explanations, and code guidance based on the current challenge
bun run build
bun run startOr deploy to Vercel with one click.