Automation library · Lead generation

Reply to WhatsApp leads with Gemini and Cal.com

Started by an incoming WhatsApp message, and works across WhatsApp. It puts Gemini behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 12 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: GeminiRetrieval

12 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
1Service it connects to

The flow

Starts it 1Model 3Logic 3Service 5

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

  1. 1WhatsApp TriggerWhats App triggerStarts it
  2. 2Chat MemoryMemory Buffer WindowModel
  3. 3Google Gemini Chat ModelLm Chat Google GeminiModel
  4. 4TinyFish SearchHttp Request ToolService
  5. 5TinyFish Web AgentTinyfish ToolService
  6. 6Cal.com SlotsHttp Request ToolService
  7. 7Cal.com BookHttp Request ToolService
  8. 8Is Text Message?IfLogic
  9. 9WhatsApp AgentAgentModel
  10. 10Booking ConfigSetLogic
  11. 11Guard ReplyCodeLogic
  12. 12Send WhatsApp ReplyWhats AppService

How it's built

Starts on
An incoming WhatsApp message
Steps
12, with 1 branch
Size
Medium: a working afternoon
Connects to
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 WhatsApp account, 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?

Plan an afternoon. 12 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 12 steps before you point it at anything that matters.