Building a Vertically Integrated AI Stack: How Load Bearing Empire Consolidated 6 Businesses on Supabase, VAPI, and Self-Hosted

Description and use

Load Bearing Empire migrated from Twilio, SendGrid, and Make.com to a self‑hosted stack using Supabase, VAPI, Asterisk, and a custom router, cutting SaaS costs by over $8K/month and reducing integration latency to under 100 ms, enabling a single engineer to run six revenue streams from day one.

Problem

Vendor lock‑in from Twilio, SendGrid, and Make.com was a liability for a company operating six distinct revenue streams.

Outcome

The migration cut $8K+ monthly SaaS spend and reduced integration latency to sub‑100 ms, enabling a single engineer to manage six revenue streams from day one.

Workflow

• 1. Replace Twilio, SendGrid, and Make.com with self‑hosted services.
• 2. Deploy 26 VAPI agents across operational workflows.
• 3. Connect agents to a single 98‑table Supabase instance (project ID: whxtjboruayowkqyjvcq).
• 4. Run 42 Edge Functions on Supabase.
• 5. Integrate Asterisk 18.10 PBX on Vultr for voice.
• 6. Build a custom JARVIS Brain Router for cross‑business logic.
• 7. Monitor and optimize latency and cost.

Evidence

We deployed 26 specialized VAPI agents across operational workflows, connected them to a single 98-table Supabase instance (project ID: whxtjboruayowkqyjvcq) running 42 Edge Functions, and eliminated $8K+ monthly in SaaS overhead while cutting integration latency to sub-100ms.

Source

A complete rip-and-replace of Twilio, SendGrid, and Make.com automation in favor of a self-hosted backbone built on Supabase, VAPI's multi-agent orchestration, Asterisk 18.10 PBX on Vultr, and a custom JARVIS Brain Router handling cross-business logic.

Source