Automation library · Scheduling

Run a Telegram voice calendar assistant with Google Calendar

Started by an incoming Telegram message, and works across Gmail, Google Calendar and Telegram. It puts OpenAI and OpenRouter behind a retrieval step, so answers are drawn from documents you supply rather than from the model alone. 20 steps, 1 branch: a working afternoon to understand properly.

MediumCalls a model: OpenAI, OpenRouterRetrieval

Download free
20 stepsMedium: a working afternoon
1Branch: places the flow splits
0Loops or waits
3Services it connects to

The flow

Starts it 1Model 8Logic 2Service 9

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

  1. 1Create EventGoogle Calendar ToolService
  2. 2Get EventsGoogle Calendar ToolService
  3. 3Update CalendarGoogle Calendar ToolService
  4. 4Receive User Input (Telegram)Telegram triggerStarts it
  5. 5Delete EventGoogle Calendar ToolService
  6. 6Get ContactsG Suite Admin ToolService
  7. 7Orchestrator MemoryMemory Buffer WindowModel
  8. 8Create Gmail DraftGmail ToolService
  9. 9Search Gmail MessagesGmail ToolService
  10. 10Sub-agent MemoryMemory Buffer WindowModel
  11. 11Sub-agent ModelLm Chat Open RouterModel
  12. 12Orchestrator - Claude Sonnet 4.6Lm Chat Open RouterModel
  13. 13Calendar AgentAgent ToolModel
  14. 14Text or Voice?IfLogic
  15. 15Orchestrator AgentAgentModel
  16. 16Gmail AgentAgent ToolModel
  17. 17Download Voice FileTelegramService
  18. 18Extract Text MessageSetLogic
  19. 19Send Response to TelegramTelegramService
  20. 20Transcribe Voice to TextOpen AiModel

How it's built

Starts on
An incoming Telegram message
Steps
20, with 1 branch
Size
Medium: a working afternoon
Connects to
Gmail, Google Calendar, Telegram
Model
OpenAI, OpenRouter
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 Gmail, Google Calendar and Telegram accounts, and a key for OpenAI and OpenRouter. You connect your own accounts after importing it; none are included.

What starts it?

It starts on an incoming Telegram message.

Does it use AI?

Yes. It calls OpenAI and OpenRouter. 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. 20 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 20 steps before you point it at anything that matters.