Automation library · Scheduling

Complete booking system with Google Calendar

Started by another system calling it, and works across Google Calendar. 27 steps, 3 branches, 2 loops or waits: large, and worth reading before you trust it with anything live.

Large

Download free
27 stepsLarge: read it before trusting it with anything live
3Branches: places the flow splits
2Loops or waits
1Service it connects to

The flow

Starts it 7Logic 15Service 5

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

  1. 1Booking WebhookWebhookStarts it
  2. 2Booking Timeslot webhookWebhookStarts it
  3. 3WaitWaitLogic
  4. 4Wait1WaitLogic
  5. 5Validate InputCodeLogic
  6. 6ConfigTimeSlotsSetLogic
  7. 7Validation CheckIfLogic
  8. 8Validate Date1CodeLogic
  9. 9Business Hours CheckCodeLogic
  10. 10Prepare Validation ErrorCodeLogic
  11. 11Check Public Holiday CalendarGoogle CalendarService
  12. 12Time Validation CheckIfLogic
  13. 13Error ResponseRespond To WebhookStarts it
  14. 14Check Calendar AvailabilityGoogle CalendarService
  15. 15Check Calendar Availability - MainGoogle CalendarService
  16. 16Prepare Time ErrorCodeLogic
  17. 17Process Holiday Check CalendarCodeLogic
  18. 18Check Calendar Availability - public holidayGoogle CalendarService
  19. 19Time Error ResponseRespond To WebhookStarts it
  20. 20Holiday Response CalendarRespond To WebhookStarts it
  21. 21Check AvailabilityCodeLogic
  22. 22Availability CheckIfLogic
  23. 23Create Calendar EventGoogle CalendarService
  24. 24Prepare Availability ErrorCodeLogic
  25. 25Prepare Success ResponseCodeLogic
  26. 26Availability Error ResponseRespond To WebhookStarts it
  27. 27Success ResponseRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
27, with 3 branches, 2 loops or waits
Size
Large: read it before trusting it with anything live
Connects to
Google Calendar
Model
None. This is plumbing, not judgement

Questions

What does it need to run?

An n8n account, plus your own Google Calendar 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?

Take your time. At 27 steps it is large: read it before trusting it with anything live.

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 27 steps before you point it at anything that matters.