Automation library · Chat assistants

Classify purchase requisitions with Gemini and Gmail

Started by another system calling it, and works across Gmail, Google Sheets and Slack. It hands the judgement calls to Gemini. 15 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: Gemini

Download free
15 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
3Services it connects to

The flow

Starts it 1Model 2Logic 8Service 4

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

  1. 1Trigger: New PR SubmittedWebhookStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3Validate & Normalize PR DataCodeLogic
  4. 4AI: Categorize Purchase RequisitionChain LlmModel
  5. 5Merge PR Data With AI ResultMergeLogic
  6. 6Parse AI Classification ResultCodeLogic
  7. 7Store Procurement RecordGoogle SheetsService
  8. 8Calculate Classification ConfidenceCodeLogic
  9. 9Notify Procurement ApproverGmailService
  10. 10Send Procurement Slack AlertSlackService
  11. 11Check Auto Approval EligibilityIfLogic
  12. 12Set Final Procurement CategorySetLogic
  13. 13Set Manual Review StatusSetLogic
  14. 14Merge Procurement OutcomesMergeLogic
  15. 15Create Manual Review TicketGmailService

How it's built

Starts on
Another system calling it
Steps
15, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail, Google Sheets, Slack
Model
Gemini

Questions

What does it need to run?

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

What starts it?

It starts on another system calling it.

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. 15 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 15 steps before you point it at anything that matters.