Automation library · Alerts and monitoring

Monitor product prices and stock with Google Sheets and OpenAI

Started by a clock, and works across Google Sheets and Slack. It hands the judgement calls to OpenAI. 16 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

Download free
16 stepsMedium: a working afternoon
2Branches: places the flow splits
1Loop or waits
2Services it connects to

The flow

Starts it 1Model 2Logic 8Service 5

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

  1. 1Trigger Every 6 HoursSchedule triggerStarts it
  2. 2OpenAI GPT-4 ExtractorLm Chat Open AiModel
  3. 3Read Products from SheetsGoogle SheetsService
  4. 4Extract Price & Stock DataInformation ExtractorModel
  5. 5Loop Over Watchlist ItemsSplit In BatchesLogic
  6. 6Compare Current vs Last ValuesCodeLogic
  7. 7End WorkflowNo OpLogic
  8. 8Fetch Product HTMLSnapshot SiteService
  9. 9If Price or Stock ChangedIfLogic
  10. 10If API ErrorIfLogic
  11. 11Set Error DetailsSetLogic
  12. 12Slack Alert on Value ChangeSlackService
  13. 13Set Watchlist Update DataSetLogic
  14. 14Clean Product HTMLCodeLogic
  15. 15Alert Slack on Price Check FailSlackService
  16. 16Update Sheets Watchlist RowGoogle SheetsService

How it's built

Starts on
A clock
Steps
16, with 2 branches, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Google Sheets, Slack
Model
OpenAI

Questions

What does it need to run?

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

What starts it?

It starts on a clock.

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. 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.