Automation library · Money admin

Automate invoice processing with OCR.Space and OpenAI

Started by an event in a connected app, and works across Gmail, Google Drive and Google Sheets. It hands the judgement calls to OpenAI. 18 steps, 1 branch, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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18 stepsMedium: a working afternoon
1Branch: places the flow splits
1Loop or waits
3Services it connects to

The flow

Starts it 1Model 3Logic 8Service 6

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

  1. 1Google SheetsGoogle Sheets ToolService
  2. 2OpenAI Chat ModelLm Chat Open AiModel
  3. 3Google Drive Trigger1Google Drive triggerStarts it
  4. 4AI AgentAgentModel
  5. 5Structured Output Parser1Output Parser StructuredModel
  6. 6Loop Over ItemsSplit In BatchesLogic
  7. 7MergeMergeLogic
  8. 8No Operation, do nothingNo OpLogic
  9. 9Google DriveGoogle DriveService
  10. 10IfIfLogic
  11. 11HTTP Request1Http RequestService
  12. 12Merge1MergeLogic
  13. 13No Operation, do nothing1No OpLogic
  14. 14Send EmailGmailService
  15. 15ErrorGmailService
  16. 16Edit FieldsSetLogic
  17. 17Error1GmailService
  18. 18CodeCodeLogic

How it's built

Starts on
An event in a connected app
Steps
18, with 1 branch, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Gmail, Google Drive, Google Sheets
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Gmail, Google Drive and Google Sheets 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. 18 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 18 steps before you point it at anything that matters.