Most n8n people I see here do great workflow work but stop short of WhatsApp. That’s the part I actually run.
What I build
AI agents that hold a real conversation on WhatsApp and take it all the way to a confirmed order — greeting, catalog/menu, product selection, order summary, payment handoff. Not a keyword bot with a decision tree.
My stack, self-hosted (not cloud n8n)
- n8n — orchestration
- Evolution API — WhatsApp connection
- Ollama — local LLM when data can’t leave the box
- Traefik — reverse proxy / routing
- Python + FastAPI for anything that doesn’t belong in a node
- All Docker, on my own VPS
Live build
“Clara” — an AI sales agent running for a bakery in São Paulo. Handles customer chats end to end: menu delivery, order organization, Pix checkout support. Built with the stack above, deployed and running.
Details + screens: WhatsApp AI Sales Agent — Built for Your Business by Bernardo de Paula Carvalho
Also worth knowing
I’m an economist before I’m an automation guy. When a workflow needs actual analysis behind it — pricing, forecasting, risk scoring — I build the model too (Python, scikit-learn, XGBoost). Most automation people hand that part back to you.
Rates
- Full WhatsApp AI agent build: from US$1,500 fixed
- Single workflow, integration or fix: US$35/hr
Practical
- Timezone UTC-3 (São Paulo) — overlaps Europe mornings, US all day
- English and Portuguese, I read Spanish
- Available now, can start this week
If you’ve got a WhatsApp piece that keeps breaking or never got built, send me the details and I’ll tell you straight whether I’m the right person for it.
— Bernardo