# WhatsApp product catalog bot with Postgres: n8n workflow

> Started by an incoming WhatsApp message, and works across Postgres and WhatsApp. 16 steps, 3 branches: a working afternoon to understand properly.

Source: https://millionrounds.com/workflow/whatsapp-product-catalog-bot-with-postgres (Millionrounds; every figure on the page links to its filing or article)

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

# WhatsApp product catalog bot with Postgres

Started by an incoming WhatsApp message, and works across Postgres and WhatsApp. 16 steps, 3 branches: a working afternoon to understand properly.

Medium

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fwhatsapp-product-catalog-bot-with-postgres)

**16 steps** Medium: a working afternoon

**3** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Logic 5 Service 10

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

- 1 **WhatsApp Trigger** Whats App trigger *Starts it*
- 2 **Initialization** Set *Logic*
- 3 **Get Bot Status** Postgres *Service*
- 4 **Start?** If *Logic*
- 5 **Starts** Whats App *Service*
- 6 **Commands** Switch *Logic*
- 7 **Upsert Bot Status** Postgres *Service*
- 8 **Main Menu** Whats App *Service*
- 9 **List?** If *Logic*
- 10 **Get Card products** Postgres *Service*
- 11 **Get Card products** Postgres *Service*
- 12 **Union Number with Question** Set *Logic*
- 13 **Get Card product** Postgres *Service*
- 14 **Union list** Summarize *Service*
- 15 **Card** Whats App *Service*
- 16 **List Cards** Whats App *Service*

## How it's built

- **Starts on:** An incoming WhatsApp message
- **Steps:** 16, with 3 branches
- **Size:** Medium: a working afternoon
- **Connects to:** Postgres, WhatsApp
- **Model:** None. This is plumbing, not judgement

## Questions

What does it need to run?

An n8n account, plus your own Postgres and WhatsApp accounts. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an incoming WhatsApp message.

Does it use AI?

No. Every step is fixed logic or a call to a service, so it does the same thing every time.

How long does it take to set up?

Plan an afternoon. 16 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 16 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%2Fwhatsapp-product-catalog-bot-with-postgres)
- **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.

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

## Workflows like it

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

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- [**Process multiple requests in FIFO with OpenAI Batch API** 16 steps · Postgres, Supabase](https://millionrounds.com/workflow/process-multiple-requests-in-fifo-with-openai-batch-api)
- [**Query your PostgreSQL data in plain English with OpenAI** 16 steps · calls a model · Google Sheets, Postgres](https://millionrounds.com/workflow/query-your-postgresql-data-in-plain-english-with-openai)
- [**Send post-purchase emails from Postgres with Gmail and Groq AI** 16 steps · calls a model · Gmail, Postgres](https://millionrounds.com/workflow/send-post-purchase-emails-from-postgres-with-gmail-and-groq-)
- [**Route human-in-the-loop approval requests with Slack** 17 steps · Postgres, Slack](https://millionrounds.com/workflow/route-human-in-the-loop-approval-requests-with-slack)
- [**Turn forwarded business document images into structured records** 17 steps · Gmail, Postgres](https://millionrounds.com/workflow/turn-forwarded-business-document-images-into-structured-reco)