# AI WhatsApp Support Agent: GPT-4o + Persistent Memory (Supabase): n8n workflow

> Started by another system calling it, and works across Slack and Supabase. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/ai-whatsapp-support-agent-gpt-4o-persistent-memory-supabase (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Customer support](https://millionrounds.com/workflows?category=Customer+support#library)

# AI WhatsApp Support Agent: GPT-4o + Persistent Memory (Supabase)

Started by another system calling it, and works across Slack and Supabase. It hands the judgement calls to OpenAI. 12 steps, 1 branch: a working afternoon to understand properly.

Medium Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fai-whatsapp-support-agent-gpt-4o-persistent-memory-supabase)

**12 steps** Medium: a working afternoon

**1** Branch: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 2 Model 2 Logic 4 Service 4

The steps in the order they run, from what starts it.

- 1 **📱 Webhook — WhatsApp Incoming** Webhook *Starts it*
- 2 **🧠GPT-4o Model** Lm Chat Open Ai *Model*
- 3 **⚙️ Parse Incoming Message** Code *Logic*
- 4 **🤖 AI Agent — Generate Reply** Agent *Model*
- 5 **🗄️ Supabase — Get Chat History** Supabase *Service*
- 6 **⚙️ Parse AI Response** Code *Logic*
- 7 **📝 Format Chat History** Code *Logic*
- 8 **💾 Supabase — Save Conversation** Supabase *Service*
- 9 **🔀 IF — Needs Human?** If *Logic*
- 10 **🔔 Slack — Alert Human Agent** Slack *Service*
- 11 **📤 Twilio — Send WhatsApp Reply** Http Request *Service*
- 12 **↩️ Respond to Twilio (200 OK)** Respond To Webhook *Starts it*

## How it's built

- **Starts on:** Another system calling it
- **Steps:** 12, with 1 branch
- **Size:** Medium: a working afternoon
- **Connects to:** Slack, Supabase
- **Model:** OpenAI

## Questions

What does it need to run?

An n8n account, plus your own Slack and Supabase accounts, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on another system calling it.

Does it use AI?

Yes. It calls OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Plan an afternoon. 12 steps is enough that you should read each one before running it.

How do I import it?

Copy the workflow, open a new workflow in n8n and paste. The steps appear on the canvas, ready for your own accounts.

**Before you run it**

Nothing here has been tested by us. It is somebody's working automation, read and described from its own steps. Treat the connections it wants as a list of accounts it will touch, and read the 12 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fai-whatsapp-support-agent-gpt-4o-persistent-memory-supabase)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Slack](https://millionrounds.com/workflows?service=Slack#library)[Supabase](https://millionrounds.com/workflows?service=Supabase#library)

## Workflows like it

Also customer support, with the same services where possible, closest in size first.

- [**AI-powered WhatsApp support automation system with OpenAI** 12 steps · calls a model · Google Sheets, HubSpot](https://millionrounds.com/workflow/ai-powered-whatsapp-support-automation-system-with-openai)
- [**Customer Support Channel and Ticketing System with Slack** 12 steps · calls a model · Linear, Slack](https://millionrounds.com/workflow/customer-support-channel-and-ticketing-system-with-slack)
- [**RAG-powered AI voice customer support agent with Supabase** 12 steps · calls a model · Google Docs, Supabase](https://millionrounds.com/workflow/rag-powered-ai-voice-customer-support-agent-with-supabase)
- [**RAG: Support Claim Playbook Assistant with Slack** 12 steps · calls a model · Google Drive, Slack](https://millionrounds.com/workflow/rag-support-claim-playbook-assistant-with-slack)
- [**Triage and log customer inquiries from Gmail and web forms** 12 steps · calls a model · Airtable, Gmail](https://millionrounds.com/workflow/triage-and-log-customer-inquiries-from-gmail-and-web-forms)
- [**Generate FAQs with OpenAI and Supabase** 12 steps · Supabase](https://millionrounds.com/workflow/generate-faqs-with-openai-and-supabase)