# Google Calendar reminder system with OpenAI and Telegram: n8n workflow

> Started by a clock, and works across Google Calendar and Telegram. It hands the judgement calls to OpenAI.

Source: https://millionrounds.com/workflow/google-calendar-reminder-system-with-openai-and-telegram (Millionrounds; every figure on the page links to its filing or article)

[Automation library](https://millionrounds.com/workflows) · [Scheduling](https://millionrounds.com/workflows?category=Scheduling#library)

# Google Calendar reminder system with OpenAI and Telegram

Started by a clock, and works across Google Calendar and Telegram. It hands the judgement calls to OpenAI. 6 steps: small enough to read in one sitting and change without fear.

Small Calls a model: OpenAI

[Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgoogle-calendar-reminder-system-with-openai-and-telegram)

**6 steps** Small: readable in one sitting

**0** Branches: places the flow splits

**0** Loops or waits

**2** Services it connects to

## The flow

Starts it 1 Model 2 Logic 1 Service 2

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

- 1 **Schedule Trigger** Schedule trigger *Starts it*
- 2 **OpenAI Chat Model** Lm Chat Open Ai *Model*
- 3 **Get upcoming event** Google Calendar *Service*
- 4 **Secretary Agent** Agent *Model*
- 5 **Already sent?** Remove Duplicates *Logic*
- 6 **Send reminder** Telegram *Service*

## How it's built

- **Starts on:** A clock
- **Steps:** 6
- **Size:** Small: readable in one sitting
- **Connects to:** Google Calendar, Telegram
- **Model:** OpenAI

## Questions

What does it need to run?

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

What starts it?

It starts on a clock.

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?

Not long. At 6 steps it can be read in one sitting and changed without fear.

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 6 steps before you point it at anything that matters.

## Run it in n8n

- **Create your n8n account** Free to start. n8n is where the workflow runs. [Create an n8n account ↗](https://millionrounds.com/n8n)
- **Download the workflow** Free with a Millionrounds account. [Download free](https://millionrounds.com/login?next=%2Fapp%2Fworkflow%2Fgoogle-calendar-reminder-system-with-openai-and-telegram)
- **Paste it into n8n** Open a new workflow in n8n and paste. Then connect your own accounts.

Stored with the author's traces removed: canvas notes, instance identifiers, saved credential names and any live document they had left behind.

## Connects to

Each opens the other workflows that use it.

[Google Calendar](https://millionrounds.com/workflows?service=Google+Calendar#library)[Telegram](https://millionrounds.com/workflows?service=Telegram#library)

## Workflows like it

Also scheduling, with the same services where possible, closest in size first.

- [**AI agent: Google Calendar assistant with OpenAI** 6 steps · calls a model · Google Calendar](https://millionrounds.com/workflow/ai-agent-google-calendar-assistant-with-openai)
- [**AI voice scheduling with Google Calendar and VAPI** 6 steps · calls a model · Google Calendar](https://millionrounds.com/workflow/ai-voice-scheduling-with-google-calendar-and-vapi)
- [**Automated meeting scheduling with OpenAI and Google Calendar** 6 steps · calls a model · Google Calendar](https://millionrounds.com/workflow/automated-meeting-scheduling-with-openai-and-google-calendar)
- [**Create Google Calendar events from labeled Gmail emails** 6 steps · calls a model · Gmail, Google Calendar](https://millionrounds.com/workflow/create-google-calendar-events-from-labeled-gmail-emails)
- [**Create Google Calendar events from natural language chat** 6 steps · calls a model · Google Calendar](https://millionrounds.com/workflow/create-google-calendar-events-from-natural-language-chat)
- [**Get daily meeting SMS reminders from Google Calendar** 6 steps · calls a model · Google Calendar](https://millionrounds.com/workflow/get-daily-meeting-sms-reminders-from-google-calendar)