Meeting Prep AI

Voice-triggered AI assistant that researches who you're meeting and briefs you before calls. Built solo at the Google Gemini Hackathon Singapore (January 2026).

GitHub Repository: github.com/phuaky/gemini-sg-hackathon

Live Demo: connected-briefing-agent

Features

• Voice-Activated Briefings - Say "prepare me for my next meeting" to trigger research
• Automatic Attendee Research - Searches the web for information about who you're meeting
• Bio Card Generation - Compiles key facts into a digestible briefing
• Voice Output - Speaks the briefing back to you hands-free
• Email Follow-up - Suggests sending confirmation emails post-briefing

Technical Stack

• Gemini API - Function calling orchestration and LLM reasoning
• Serper API - Web research and search capabilities
• Google Cloud TTS - Text-to-speech voice output
• Web Speech API - Browser-based voice input
• Express.js - Backend server
• Cloud Run - Serverless hosting on Google Cloud

Architecture

"Prepare me for my next meeting"
  ↓
Voice Input (Web Speech API)
  ↓
Gemini Function Calling
  ↓
Research Attendee (Serper API)
  ↓
Generate Bio Card
  ↓
Voice Briefing (Google Cloud TTS)
  ↓
"Should I send a confirmation email?"

Current Status

Working (40% of vision):

• Voice Output (TTS)
• Function Calling orchestration
• Web Research via Serper

Not Yet Implemented:

• Real Google Calendar OAuth (using mock data)
• Real Gmail OAuth (mock JSON)
• Bio Card image generation
• Proactive triggers
• Email sending
• Gemini Live bidirectional voice (fell back to Web Speech API)

The Vision

Not just meeting prep - a relationship operating system:

• Proactive calendar monitoring ("meeting in 30 mins, here's your brief")
• Tracks your goals across relationships over time
• Remembers what you committed to in past meetings
• Suggests strategic asks ("You've met Sarah 4x. Ask for the intro this time.")
• Bidirectional voice via Gemini Live API
• Visual bio cards via image generation

Lessons Learned

Built for the Google Gemini Hackathon: 76 projects, 200 participants, 7 hours.

The Gap:

• Tools Used: 5 vs 25+ (winners used extensive Google ecosystem)
• Architecture: Single agent vs Multi-agent orchestration
• Demo: No video vs Full production video
• Novel Tech: API wrapper vs custom algorithms

Key Insight: Hackathons reward different things than product building. Knowing the game you're playing matters.

Hackathon Details:

• Event: Gemini 3 Hackathon by Google DeepMind + 65labs
• Date: January 11, 2026
• Location: Singapore
• Result: Didn't place (Tier B- in self-analysis)

Read the full post-mortem