Automation library · Money admin

Meter AI token usage and prepaid Lago credits

Started by another system calling it. It calls services over plain HTTP rather than through connectors. 15 steps, 2 branches: a working afternoon to understand properly.

Medium

15 stepsMedium: a working afternoon
2Branches: places the flow splits
0Loops or waits
0Services by connector: it calls them over plain HTTP

The flow

Starts it 4Logic 8Service 3

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

  1. 1When AI Usage PostedWebhookStarts it
  2. 2Normalize AI Usage DataCodeLogic
  3. 3If AI Usage ValidIfLogic
  4. 4Compute Usage FeesLagoService
  5. 5Send Validation Error ResponseRespond To WebhookStarts it
  6. 6Total Estimated FeesCodeLogic
  7. 7Retrieve Prepaid WalletLagoService
  8. 8Determine Credit LevelCodeLogic
  9. 9Transmit Usage EventLagoService
  10. 10Create Metering ReceiptCodeLogic
  11. 11Check Low Credit AlertIfLogic
  12. 12Setup Low Credit AlertSetLogic
  13. 13Setup Healthy Credit ResponseSetLogic
  14. 14Send Low Credit ResponseRespond To WebhookStarts it
  15. 15Send Healthy Credit ResponseRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
15, with 2 branches
Size
Medium: a working afternoon
Connects to
Nothing by connector; it calls services over plain HTTP
Model
None. This is plumbing, not judgement

Questions

What does it need to run?

An n8n account. 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. 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.