Second Brain is a 100% free, invisible desktop assistant built to help professionals worldwide ace their job interviews. It runs quietly in the background, listening to the interview, and generates context-aware, first-person suggestions based on your own resume and the job description.

Powered by Groq's lightning-fast Llama-3 inference and Whisper-large-v3, the entire process—from voice capture to intelligent suggestion—happens in milliseconds.

✨ Features

• Real-Time Voice Transcription: Uses Whisper-v3 via Groq API to transcribe the interviewer's speech with extremely high accuracy and speed.
• Context-Aware Suggestions: Analyzes the ongoing conversation, your provided resume, and the job description to suggest the best possible answers.
• Multi-Language Support: Fully localized interface and AI prompting for English, Brazilian Portuguese, European Portuguese, Spanish, French, and Italian.
• Invisible Mode: Built with Electron, it can be minimized to stay out of the way while you focus on the video call.
• Privacy First: Your resume, job description, and API keys are stored exclusively in your local machine's localStorage.

🚀 Quick Start (Download)

1. Download the Installer: Get the latest Second Brain Setup .exe from our Releases page.

2. Get a Free Groq API Key: Go to console.groq.com and generate a free API key. This is required for the ultra-fast AI engine.

3. Install and Configure:

   • Open the app.
   • Paste your API Key.
   • Paste your Resume and the Job Description.
   • Select your language.
   • Click Start Interview and you're ready to go!

🛠️ Development

If you want to build from source or contribute:

Prerequisites

• Node.js 18+
• npm or yarn

Installation

git clone https://github.com/2brain/second-brain.git
cd second-brain

# Install dependencies
npm install

# Start the development server
npm run dev

Build for Production

# Compile and build the Electron installer
npm run dist

The installer will be generated inside the dist-installers folder.

🤝 Support the Project

Second Brain is open-source and free for the community. If this tool helped you land a job or nail an interview, consider buying us a coffee!

❓ FAQ

1. Is it really 100% free? Yes! The application is open-source and entirely free. You only need to create a free account on Groq to get your API key.

2. Is my data safe? Do you save my resume? Your privacy is our absolute priority. We do not have a database. Your API key and your resume are saved strictly in your computer's localStorage. Nothing is sent to our servers.

3. What is the best way to fill in the "Resume" and "Job Description" fields? Simply copy and paste the entire raw text of your resume (PDF or LinkedIn) and the job description. Don't worry about formatting; the Second Brain AI will automatically organize your data in its memory to provide highly accurate and contextualized answers.

4. How can I test the system without being in a real interview? You can test it right now! Just open the app, click "Listen", and play a YouTube video of a mock interview on your speakers, or simply pretend to be the recruiter and ask a question out loud.

5. What if the system is not capturing audio? (Headset Warning) Second Brain listens to your system's default microphone. If you use noise-canceling headsets, your microphone might not capture the recruiter's voice coming from the headset speakers. Always test the system before an interview. If it's not capturing the recruiter's voice, change your computer's audio output to the speakers or adjust your system's audio routing settings.

6. Can the recruiter see or hear the AI? No. Second Brain runs as an independent window on your screen. It does not inject audio into your microphone feed and does not share your screen. It is completely invisible to the interviewer.

7. Why is the AI taking a few seconds to answer? The AI waits for the interviewer to finish a complete thought before generating an answer. It listens in 7-second blocks to ensure it understands the full question before giving you the script.

8. Does it work on Mac or Linux? Currently, the automated releases provide a .exe installer for Windows. However, developers can easily clone this repository and run npm run dist to build it natively for macOS or Linux.

📝 License

Distributed under a Custom Non-Commercial License. You are free to use and study the software, but commercial distribution or sale is strictly prohibited. See LICENSE for more information.