---
title: Second Brain
emoji: 🧠
colorFrom: indigo
colorTo: purple
sdk: gradio
sdk_version: 6.6.0
python_version: '3.10'
app_file: app.py
pinned: false
---

# 🧠 Second Brain

An intelligent personal productivity app that learns how you work and schedules your day accordingly.

## Features

- **Task Capture** — type or speak tasks; AI classifies them across 4 dimensions automatically
- **Life Areas** — every task belongs to one of your personal life areas (Work, Health, etc.)
- **Smart Scheduling** — AI builds a time-blocked daily plan based on your tasks, context, and learned patterns
- **Habit Tracking** — mark tasks as habits with a recurrence interval; they auto-spawn each day
- **Goals** — define big-picture goals; AI factors them in when prioritizing
- **Journaling** — end-of-day reflection that updates the AI's knowledge of how you work best

## Project Structure

```
second_brain/
├── app.py                  ← Main Gradio app, all UI + event wiring
├── requirements.txt
├── core/
│   ├── __init__.py
│   ├── database.py         ← SQLite: users, tasks, life areas, goals, AI context
│   ├── ai_engine.py        ← All Groq API calls (task parsing, scheduling, journaling)
│   └── styles.py           ← CSS
└── ui/
    └── __init__.py
```

---

## Deploying to HuggingFace Spaces

#### Add your Groq API key as a Secret

In your Space on HuggingFace:

1. Go to **Settings** → **Repository secrets**
2. Click **New secret**
3. Name: `GROQ_API_KEY`
4. Value: your Groq key (starts with `gsk_`)
5. Click **Add secret**

> ⚠️ Never paste your API key directly into any file — use secrets only.

---


## Notes

- **Database**: SQLite file `second_brain.db` is created automatically on first run in the app's working directory
- **Voice transcription**: Uses OpenAI Whisper `small` model (~250MB), downloaded on first voice task
- **AI model**: Groq `llama-3.3-70b-versatile` (free tier, ~0.3s response time)
- **Persistence on HF Spaces**: HuggingFace Spaces have ephemeral storage — the SQLite DB resets on each restart. For permanent storage, upgrade to a paid Space with persistent storage, or swap `database.py` to use an external DB (Supabase, PlanetScale, etc.)