Automation library · Scheduling

Manage restaurant reservations via WhatsApp with Gemini

Started by an incoming WhatsApp message, and works across Google Calendar, Google Sheets and WhatsApp. It puts Gemini behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 21 steps, 1 branch: large, and worth reading before you trust it with anything live.

LargeCalls a model: GeminiRetrieval

21 stepsLarge: read it before trusting it with anything live
1Branch: places the flow splits
0Loops or waits
3Services it connects to

The flow

Starts it 1Model 4Logic 3Service 13

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

  1. 1Mensaje de WhatsAppWhats App triggerStarts it
  2. 2Modelo GeminiLm Chat Google GeminiModel
  3. 3Memoria por clienteMemory Buffer WindowModel
  4. 4Consultar menuGoogle Sheets ToolService
  5. 5Guardar reservaGoogle Sheets ToolService
  6. 6Agendar en calendarioGoogle Calendar ToolService
  7. 7Notificar al restauranteWhats App ToolService
  8. 8Buscar reservasGoogle Sheets ToolService
  9. 9Cancelar reservaGoogle Sheets ToolService
  10. 10Borrar del calendarioGoogle Calendar ToolService
  11. 11Modificar reservaGoogle Sheets ToolService
  12. 12Actualizar calendarioGoogle Calendar ToolService
  13. 13Texto o audioSwitchLogic
  14. 14Agente de ReservasAgentModel
  15. 15Preparar textoSetLogic
  16. 16Obtener URL del audioWhats AppService
  17. 17Avisar formato no soportadoWhats AppService
  18. 18Responder al clienteWhats AppService
  19. 19Descargar audioHttp RequestService
  20. 20Transcribir audio con GeminiGoogle GeminiModel
  21. 21Preparar transcripcionSetLogic

How it's built

Starts on
An incoming WhatsApp message
Steps
21, with 1 branch
Size
Large: read it before trusting it with anything live
Connects to
Google Calendar, Google Sheets, WhatsApp
Model
Gemini
Retrieval
Answers are drawn from documents you supply, not from the model alone

Questions

What does it need to run?

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

What starts it?

It starts on an incoming WhatsApp message.

Does it use AI?

Yes. It calls Gemini. Its answers draw on documents you give it, not on the model alone. Model calls are billed by the provider, not by n8n.

How long does it take to set up?

Take your time. At 21 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 21 steps before you point it at anything that matters.