Automation library · Money admin

Extract invoice data from Google Drive images with OpenAI

Started by an event in a connected app, and works across Google Drive and Postgres. It hands the judgement calls to OpenAI. 10 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI

10 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 1Model 1Logic 2Service 6

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

  1. 1Google Drive File TriggerGoogle Drive triggerStarts it
  2. 2Download from Google DriveGoogle DriveService
  3. 3AI Image AnalyzerOpen AiModel
  4. 4Parse JSON ResponseCodeLogic
  5. 5Move to Failed FolderGoogle DriveService
  6. 6Check Duplicate EntryPostgresService
  7. 7If Duplicate FoundIfLogic
  8. 8Move to Duplicate FolderGoogle DriveService
  9. 9Insert Invoice RecordPostgresService
  10. 10Move to Processed FolderGoogle DriveService

How it's built

Starts on
An event in a connected app
Steps
10, with 1 branch
Size
Medium: a working afternoon
Connects to
Google Drive, Postgres
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Google Drive and Postgres 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. 10 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 10 steps before you point it at anything that matters.