Automation library · Scheduling

AI voice scheduling with Google Calendar and VAPI

Started by another system calling it, and works across Google Calendar. It hands the judgement calls to OpenAI. 6 steps: small enough to read in one sitting and change without fear.

SmallCalls a model: OpenAI

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6 stepsSmall: readable in one sitting
0Branches: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 2Model 2Service 2

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

  1. 1Receive Scheduling Request from VAPIWebhookStarts it
  2. 2OpenAI GPT-4.1 Mini ModelLm Chat Open AiModel
  3. 3Check Calendar AvailabilityGoogle Calendar ToolService
  4. 4Book Appointment in CalendarGoogle Calendar ToolService
  5. 5Process Scheduling with AI AssistantAgentModel
  6. 6Send Response to Voice AgentRespond To WebhookStarts it

How it's built

Starts on
Another system calling it
Steps
6
Size
Small: readable in one sitting
Connects to
Google Calendar
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Google Calendar account, and a key for OpenAI. 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 OpenAI. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Not long. At 6 steps it can be read in one sitting and changed without fear.

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 6 steps before you point it at anything that matters.