Automation library · Research and reporting

Document summarizer - Google Drive to Slack with OpenAI

Started by an event in a connected app, and works across Google Drive, Google Sheets and Slack. It hands the judgement calls to OpenAI. 17 steps, 3 branches: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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

The flow

Starts it 2Model 1Logic 8Service 6

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

  1. 1Google Drive TriggerGoogle Drive triggerStarts it
  2. 2Error HandlerError triggerStarts it
  3. 3Validate File TypeIfLogic
  4. 4Parse Error DetailsCodeLogic
  5. 5Route by File TypeIfLogic
  6. 6Unsupported File TypeStop And ErrorLogic
  7. 7Notify Error to SlackSlackService
  8. 8Download PDF1Google DriveService
  9. 9Download Google Doc as TextGoogle DriveService
  10. 10Extract Text from PDFExtract From FileService
  11. 11Prepare Text ContentSetLogic
  12. 12Validate Text ExtractionIfLogic
  13. 13Generate Summary with OpenAIOpen AiModel
  14. 14Text Extraction FailedStop And ErrorLogic
  15. 15Format Output DataCodeLogic
  16. 16Send to SlackSlackService
  17. 17Log to Google SheetsGoogle SheetsService

How it's built

Starts on
An event in a connected app
Steps
17, with 3 branches
Size
Medium: a working afternoon
Connects to
Google Drive, Google Sheets, Slack
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Google Drive, 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 an event in a connected app.

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. 17 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 17 steps before you point it at anything that matters.