Automation library · Scheduling

Voice appointment booking & confirmation system with Vapi

Started by another system calling it, and works across Gmail and Google Calendar. It hands the judgement calls to Gemini. 10 steps: a working afternoon to understand properly.

MediumCalls a model: Gemini

10 stepsMedium: a working afternoon
0Branches: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 4Model 2Logic 1Service 3

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

  1. 1Webhook - Availability CheckerWebhookStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3Webhook - Create AppointmentWebhookStarts it
  4. 4Get Busy Slots from CalendarGoogle CalendarService
  5. 5AI Availability AnalyzerAgentModel
  6. 6Create Calendar EventGoogle CalendarService
  7. 7Format Busy SlotsCodeLogic
  8. 8Return Availability to VapiRespond To WebhookStarts it
  9. 9Send Confirmation EmailGmailService
  10. 10Return Confirmation to VapiRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
10
Size
Medium: a working afternoon
Connects to
Gmail, Google Calendar
Model
Gemini

Questions

What does it need to run?

An n8n account, plus your own Gmail and Google Calendar 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. 10 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 10 steps before you point it at anything that matters.