Built an Odoo 19 + AI + WhatsApp + n8n Automation Stack Using Open-Source Tools

I just shipped omni-odoo-stack — a portfolio-grade ERP automation project built around Odoo 19 Community, n8n, WhatsApp Cloud API, Groq/Llama 3, FastAPI, PostgreSQL, Docker Compose, and Nginx.

The goal was to demonstrate how a modern business can connect ERP, workflow automation, WhatsApp communication, and AI-assisted processing using open-source or free-tier friendly components.

What’s inside:

4 custom Odoo modules

— omni_crm: AI-scored leads, WhatsApp contact flow, and public REST API — omni_whatsapp: Meta webhook integration with inbound/outbound message history — omni_ai: LLM request logging, token tracking, and hourly cron processing — omni_automation: Automation event tracking, failure logs, and dashboard views

3 n8n workflow automations

— WhatsApp lead intake → AI analysis → Odoo CRM lead → WhatsApp reply — Invoice payload → AI extraction → Odoo vendor bill → confirmation — HR onboarding form → Odoo employee record → AI welcome message → WhatsApp notification

FastAPI AI middleware

The AI layer is separated from Odoo and uses Pydantic v2 validation to keep LLM responses structured before they reach ERP fields.

That separation matters.

Instead of putting prompts and model logic directly inside Odoo, the middleware acts as a safety boundary between business data and AI models. This makes the system easier to maintain, test, replace, and scale.

The project also includes:

— Docker Compose orchestration — PostgreSQL 16 — Nginx routing for Odoo, n8n, and FastAPI — Environment-based configuration — Sample n8n workflow exports — Documentation for setup, architecture, APIs, and deployment path — OCI Always Free deployment direction

This is not just a simple demo. It is designed as a production-style architecture pattern for Odoo partners, SaaS teams, and agencies that need backend automation, AI middleware, WhatsApp workflows, and ERP integrations.

GitHub: https://github.com/gharisj3/omni-odoo-stack LinkedIn: https://www.linkedin.com/in/muhammad-gharis-javed-318266202/

I’m open to remote contracts involving Odoo backend development, n8n automation, FastAPI middleware, PostgreSQL optimization, WhatsApp automation, and Oracle/Odoo integrations.

DM me or reach out at gharis@omni-academy.com