Automation library · Scheduling

WhatsApp assistant with Gemini and Evolution API

Started by another system calling it, and works across Google Calendar. It puts Gemini behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 26 steps, 1 branch: large, and worth reading before you trust it with anything live.

LargeCalls a model: GeminiRetrieval

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

The flow

Starts it 2Model 7Logic 5Service 12

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

  1. 1WebhookWebhookStarts it
  2. 2Google Gemini Chat ModelLm Chat Google GeminiModel
  3. 3Simple MemoryMemory Buffer WindowModel
  4. 4MCP CalendarMcp Client ToolModel
  5. 5Create an eventGoogle Calendar ToolService
  6. 6Get many eventsGoogle Calendar ToolService
  7. 7Delete an eventGoogle Calendar ToolService
  8. 8Update an eventGoogle Calendar ToolService
  9. 9Message TypeSwitchLogic
  10. 10Archestrator AgentAgentModel
  11. 11MCP Server Google CalendarMcp triggerStarts it
  12. 12Edit FieldsSetLogic
  13. 13Get base64 imageEvolution ApiService
  14. 14Get base64 audioEvolution ApiService
  15. 15Get base64 documentEvolution ApiService
  16. 16Message not supportedEvolution ApiService
  17. 17Send messageEvolution ApiService
  18. 18Convert to imageConvert To FileService
  19. 19Convert to audioConvert To FileService
  20. 20Convert to documentConvert To FileService
  21. 21Analyze an imageGoogle GeminiModel
  22. 22Transcribe a recordingGoogle GeminiModel
  23. 23Analyze documentGoogle GeminiModel
  24. 24ImageSetLogic
  25. 25AudioSetLogic
  26. 26DocumentSetLogic

How it's built

Starts on
Another system calling it
Steps
26, with 1 branch
Size
Large: read it before trusting it with anything live
Connects to
Google Calendar
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 account, 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. 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 26 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 26 steps before you point it at anything that matters.