Automation library · Content

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

16 stepsMedium: a working afternoon
3Branches: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Logic 5Service 10

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

  1. 1WhatsApp TriggerWhats App triggerStarts it
  2. 2InitializationSetLogic
  3. 3Get Bot StatusPostgresService
  4. 4Start?IfLogic
  5. 5StartsWhats AppService
  6. 6CommandsSwitchLogic
  7. 7Upsert Bot StatusPostgresService
  8. 8Main MenuWhats AppService
  9. 9List?IfLogic
  10. 10Get Card productsPostgresService
  11. 11Get Card products PostgresService
  12. 12Union Number with Question SetLogic
  13. 13Get Card productPostgresService
  14. 14Union list SummarizeService
  15. 15CardWhats AppService
  16. 16List CardsWhats AppService

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.