Manage calendar with voice & text using GPT-4, Telegram & Google Calendar
# Manage Calendar with Voice & Text Commands using GPT-4, Telegram & Google Calendar
This n8n workflow transforms your Telegram bot into a **personal AI calendar assistant**, capable of understanding both **voice and text commands** in **Romanian**, and managing your Google Calendar using the **GPT-4 model** via LangChain.
Whether you want to create, update, fetch, or delete events, you can simply speak or write your request to your Telegram bot — and the assistant takes care of the rest.
## 🚀 Features
- Voice command support using **Telegram voice messages** (.ogg)
- Transcription using **OpenAI Whisper**
- Natural language understanding with **GPT-4 via LangChain**
- Google Calendar integration:
- ✅ Create Events
- 🔁 Update Events
- ❌ Delete Events
- 📅 Fetch Events
- Responses sent back via Telegram
## 🛠️ Step-by-Step Setup Instructions
### 1. Create a Telegram Bot
- Go to [@BotFather](https://t.me/BotFather) on Telegram.
- Send `/newbot` and follow the instructions.
- Save the **Bot Token**.
### 2. Configure Telegram Trigger Node
- Paste the Telegram token into the **Telegram Trigger** and **Telegram nodes**.
- Set **updates** to `["message"]`.
### 3. Set up OpenAI Credentials
- Get an OpenAI API key from https://platform.openai.com
- Create a credential in n8n for **OpenAI**.
- This is used for both **transcription** and **AI reasoning**.
### 4. Set up Google Calendar
- In Google Cloud Console:
- Enable **Google Calendar API**
- Set up OAuth2 credentials
- Add your n8n redirect URI (usually `https://yourdomain/rest/oauth2-credential/callback`)
- Create a credential in n8n using **Google Calendar OAuth2**
- Grant access to your calendar (e.g., "Family" calendar).
## ⚙️ Customization Options
### 🗣️ Change Language or Locale
- The transcription node uses `"en"` for English. Change to another locale if needed.
### ✏️ Edit Prompt
- You can modify the prompt in the **AI Agent** node to include your name, work schedule, or specific behavior expectations.
### 📆 Change Calendar Logic
- Adjust time ranges or filters in the `Get Events` node
- Add custom logic before `Create Event` (e.g., validation, conflict checks)
## 📚 Helpful Tips
- Make sure n8n has HTTPS enabled to receive Telegram updates.
- You can test the flow first using only text, then voice.
- Use AI memory or vector stores (like Supabase) if you want context-aware planning in the future.
