OPENING PARAGRAPH:
We eliminated $8K/month in SaaS overhead by replacing Twilio, SendGrid, and Make.com with a self-hosted stack built on Supabase, VAPI, and Asterisk 18.10. This article breaks down how Load Bearing Empire architected JARVIS—a central AI Brain Router that orchestrates 26 concurrent VAPI agents across six vertically integrated businesses (real estate, demolition, valet, credit repair, mineral rights, and SaaS)—using PostgreSQL edge functions, a custom PBX layer on Vultr, and deterministic call routing logic. We'll walk through the 98-table schema, the 42 Edge Functions that power real-time agent dispatch, why we chose Supabase over Firebase, and how this approach scales from a single phone to enterprise infrastructure.
