Automation library · Scheduling

AI Calling Agent with Retell AI and Google Calendar Scheduling

Started by someone submitting a form, and works across Google Calendar and Google Sheets. It hands the judgement calls to OpenAI. 19 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI

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19 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
2Services it connects to

The flow

Starts it 4Model 4Logic 1Service 10

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

  1. 1OpenAI Chat ModelLm Chat Open AiModel
  2. 2On form submissionForm triggerStarts it
  3. 3WebhookWebhookStarts it
  4. 4Book AppointmentGoogle Calendar ToolService
  5. 5Get AppointmentGoogle Calendar ToolService
  6. 6Cancel AppointmentGoogle Calendar ToolService
  7. 7Update AppointmentGoogle Calendar ToolService
  8. 8Check AvailabilityGoogle Calendar ToolService
  9. 9Webhook1WebhookStarts it
  10. 10OpenAI Chat Model1Lm Chat Open AiModel
  11. 11Twilio toolTwilio ToolService
  12. 12Send emailEmail Send ToolService
  13. 13Summarization ChainChain SummarizationModel
  14. 14RetellHttp RequestService
  15. 15IfIfLogic
  16. 16AI AgentAgentModel
  17. 17Append or update row in sheet1Google SheetsService
  18. 18Append row in sheetGoogle SheetsService
  19. 19Respond to WebhookRespond To WebhookStarts it

How it's built

Starts on
Someone submitting a form
Steps
19, with 1 branch
Size
Medium: a working afternoon
Connects to
Google Calendar, Google Sheets
Model
OpenAI

Questions

What does it need to run?

An n8n account, plus your own Google Calendar and Google Sheets accounts, and a key for OpenAI. You connect your own accounts after importing it; none are included.

What starts it?

It starts on someone submitting a form.

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?

Plan an afternoon. 19 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 19 steps before you point it at anything that matters.