Built ZetAI — a fully functional AI-powered voice agent that listens to spoken commands and executes real business tasks autonomously. Unlike basic voice assistants that just answer questions, ZetAI takes action: scheduling meetings in Google Calendar, sending emails with AI-drafted content, creating tasks in Notion or Airtable, pulling live data from CRMs, and triggering n8n automation workflows — all from a single voice command. The agent uses a speech-to-intent pipeline: voice input is transcribed, the intent is classified by an LLM, the appropriate tool or workflow is selected, executed, and a voice confirmation is sent back to the user. Supports multi-step commands like "Find my last 3 unpaid invoices, draft a follow-up email for each, and schedule reminders for Friday." Designed as a personal business operating system for founders and executives who want to run their entire operation hands-free.