Automation library · Money admin

Automated invoice data extraction with LlamaParse and Gemini

Started by an arriving email, and works across Gmail and Google Sheets. It hands the judgement calls to Gemini. 17 steps, 2 branches, 1 loop or waits: a working afternoon to understand properly.

MediumCalls a model: Gemini

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

The flow

Starts it 1Model 3Logic 7Service 6

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

  1. 1Structured Output ParserOutput Parser StructuredModel
  2. 2Receiving InvoicesGmail triggerStarts it
  3. 3Google Gemini Chat ModelLm Chat Google GeminiModel
  4. 4Apply Data Extraction RulesChain LlmModel
  5. 5Split Out LabelsSplit OutLogic
  6. 6Email with Label NamesMergeLogic
  7. 7Map OutputSetLogic
  8. 8Get Labels NamesGmailService
  9. 9Should Process Email?IfLogic
  10. 10Append to Reconciliation SheetGoogle SheetsService
  11. 11Combine Label NamesAggregateLogic
  12. 12Upload to LlamaParseHttp RequestService
  13. 13Add "invoice synced" LabelGmailService
  14. 14Get Processing StatusHttp RequestService
  15. 15Is Job Ready?SwitchLogic
  16. 16Get Parsed Invoice DataHttp RequestService
  17. 17Wait to stay within service limitsWaitLogic

How it's built

Starts on
An arriving email
Steps
17, with 2 branches, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets
Model
Gemini

Questions

What does it need to run?

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

What starts it?

It starts on an arriving email.

Does it use AI?

Yes. It calls Gemini. 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.