Private Second Brain (Life OS) 🧠

Your 100% local AI Second Brain that actually remembers everything. Draft notes in markdown → save to your private vault → chat with an AI that pulls perfect context from your own thoughts. Zero cloud. Zero subscriptions. Zero data leaks.

🌟 Features

• 100% Local & Private — Everything runs on your machine with Ollama
• Capture Zone — Dual-pane markdown editor with instant save
• Smart RAG Chat — ChromaDB finds relevant notes automatically
• Real-time Streaming — Beautiful SSE streaming responses
• Persistent Everything — Notes + chat history survive reloads
• Auto-Healing Vectors — Edit a note → old embeddings are intelligently replaced
• Life OS Ready — Built for daily thinking, not just note-taking

🏗️ Architecture

• Frontend: Next.js 14 (App Router) + Tailwind + shadcn/ui
• Backend: FastAPI + LangChain + ChromaDB
• AI Engine: Ollama (llama3.2 + nomic-embed-text)

🚀 Getting Started (2 minutes)

Prerequisites

• Node.js (v18+)
• Python 3.9+
• Ollama (running)

1. Pull Models

ollama pull llama3.2
ollama pull nomic-embed-text

2. Backend

cd backend
python -m venv venv
source venv/bin/activate    # Windows: venv\\Scripts\\activate
pip install -r requirements.txt
uvicorn main:app --reload --port 8001 --host 127.0.0.1

3. Frontend (new terminal)

cd frontend
npm install
npm run dev

Open http://localhost:3000 → start building your Life OS!

📂 Folder Structure

• /vault ← Your actual .md files + hidden .chroma DB (auto-created)
• /backend ← FastAPI + RAG logic
• /frontend ← Next.js UI

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Built with privacy and local-compute in mind. Star ⭐ if this helps you think better.

Roadmap (Next 2 Weeks)

• Voice note capture (Whisper)
• Multi-agent memory (via agent.yaml)
• Docker + one-click install
• Web search tool (optional, local-first)
• Mobile PWA support

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Made with ❤️ by Ayush