The flow
Starts it 2Logic 6Service 6
The steps in the order they run, from what starts it.
- 1Invoice Intake WebhookWebhookStarts it
- 2Parse Invoice PayloadCodeLogic
- 3Is Valid InvoiceIfLogic
- 4Lookup Existing InvoiceGoogle SheetsService
- 5Flag Duplicate StatusSetLogic
- 6Duplicate FoundIfLogic
- 7Slack Duplicate AlertSlackService
- 8Prepare ApprovalSetLogic
- 9Log DuplicateGoogle SheetsService
- 10Register Unique InvoiceGoogle SheetsService
- 11Needs ApprovalIfLogic
- 12Email ApproverGmailService
- 13Slack Cleared NoticeSlackService
- 14Respond to CallerRespond To WebhookStarts it
How it's built
- Starts on
- Another system calling it
- Steps
- 14, with 3 branches
- Size
- Medium: a working afternoon
- Connects to
- Gmail, Google Sheets, Slack
- Model
- None. This is plumbing, not judgement
Questions
What does it need to run?
An n8n account, plus your own Gmail, Google Sheets and Slack accounts. 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?
No. Every step is fixed logic or a call to a service, so it does the same thing every time.
How long does it take to set up?
Plan an afternoon. 14 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.
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 14 steps before you point it at anything that matters.