Building a Multi-Agent Voice Command Center: QHV's Supabase + VAPI Architecture for Real-Time Automation

OPENING: We built a production voice command center handling 8 concurrent AI agents, 8 automation workflows, and real-time order orchestration—all running on Supabase Edge Functions as our webhook backbone. This article breaks down the exact Postgres schema (8 tables), VAPI integration patterns, and Vercel deployment strategy we used to ship Quiet Hours Valet's QHV Command Center: a 5-page frontend managing trash valet logistics through voice-triggered automations. If you're scaling beyond chatbots into multi-agent orchestration, this technical deep-dive covers the infrastructure decisions that let a bootstrapped business eliminate manual call-handling and hit production-grade reliability without enterprise pricing.