Vox Pet Digital
Vertical SaaS for pet shops and veterinary clinics — from scheduling to invoices, with WhatsApp AI.
The purpose
Veterinary clinics and pet shops are complex businesses: they handle appointments, medical records, vaccines, sales, inventory, commissions, invoices and customer service — all at the same time. Most use spreadsheets or generic systems that don't understand the segment's routine.
Vox Pet Digital was built to be the system that covers the complete cycle of this business. A single platform integrating operational management, financials and automated WhatsApp customer service — so clinics can focus on animal care, not spreadsheets.
The differentiator is that the platform scales with the business: a clinic with 1 location uses the same modules as a chain with 5 branches. Real multi-tenant + multi-branch, not a workaround.
Technical challenges
Express → NestJS migration
Strangler fig pattern: v1 (41 controllers) and v2 (12 NestJS modules) coexisting in the same process, with strict rules for new code.
24/7 WhatsApp + AI
Agent with 10 tools, per-tenant RAG, Whisper for audio, conversation memory and automated follow-up via cron.
Multi-tenant + multi-branch
95 Prisma models, 93 with tenant_id, 76 with branch_id. Inter-branch stock transfers with approval workflow.
Invoices with fallback
Two providers (Focus NFe + NFe.io), resilient queue processing every 30s, supplier XML import.
The platform
