Automation library · Money admin

Handle retail payment failures with Slack and Supabase

Started by another system calling it, and works across Gmail, Slack and Supabase. 17 steps, 4 branches, 1 loop or waits: a working afternoon to understand properly.

Medium

17 stepsMedium: a working afternoon
4Branches: places the flow splits
1Loop or waits
3Services it connects to

The flow

Starts it 1Logic 11Service 5

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

  1. 1Receive Payment FailureWebhookStarts it
  2. 2Normalize Payment DataSetLogic
  3. 3Identify Failure TypeFunctionLogic
  4. 4Route by Failure TypeIfLogic
  5. 5Notify Team: Payment FailedSlackService
  6. 6Is This a Fraudulent Payment?IfLogic
  7. 7Is This a High-Value Order?IfLogic
  8. 8Notify Team: Fraud DetectedSlackService
  9. 9Notify Team: Payment FailureSlackService
  10. 10Notify Customer to Retry PaymentGmailService
  11. 11Log Fraud CaseSetLogic
  12. 12Log Hard Failure CaseSetLogic
  13. 13Wait Before Next Retry AttemptWaitLogic
  14. 14Save Payment Failure RecordSupabaseService
  15. 15Increase Retry Attempt CountSetLogic
  16. 16Has Retry Limit Been Reached?IfLogic
  17. 17Log Retry Attempt ResultSetLogic

How it's built

Starts on
Another system calling it
Steps
17, with 4 branches, 1 loop or waits
Size
Medium: a working afternoon
Connects to
Gmail, Slack, Supabase
Model
None. This is plumbing, not judgement

Questions

What does it need to run?

An n8n account, plus your own Gmail, Slack and Supabase 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. 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.