Multi-User Telegram Bot to Summarize & Repurpose YouTube Videos with GPT-4o

👤 Who's it for

This workflow is for content creators, marketers, educators, or anyone who wants to instantly summarize YouTube videos and repurpose them into different formats (LinkedIn post, tweet, etc.) via a simple Telegram chatbot.

⚙️ How it works

This n8n automation listens for messages in Telegram. If the message contains a YouTube link, it:

• Extracts the video ID
• Fetches the video transcript using RapidAPI
• Cleans the transcript of any special characters
• Sends it to OpenAI to generate a summary

If the message is not a link , it simply acts as an AI chatbot using OpenAI with memory support.

✅ Supports follow-up prompts like:

• “Make it shorter”
• “Turn this into a LinkedIn post”
• “Create a tweet thread”

🧑‍🤝‍🧑 Multi-User Support

This Telegram bot supports multiple users simultaneously. It tracks memory and context separately for each user using Telegram's unique chat_id .

✅ Each user gets personalized AI replies
✅ Follow-up commands work per user
✅ No interference between users

🛠️ Requirements

• A Telegram bot token (get via @BotFather )
• An OpenAI API Key (from https://platform.openai.com/account/api-keys )
• A RapidAPI Key and Host (typically youtube-transcript3.p.rapidapi.com )

🚨 API keys must be added manually — they are not included in the template.

🧩 How to Set It Up

1. Configure the Telegram Trigger node with your bot token.
2. In the HTTP Request node , set:
   • X-RapidAPI-Key : your RapidAPI key
   • X-RapidAPI-Host : your RapidAPI host URL
3. Add your OpenAI API credentials to the AI ​​Agent node.

Use the provided sticky notes for guidance inside the workflow itself.

🎛️ How to Customize

• Modify AI prompt behavior in the AI ​​Agent node
• Change the text formatting in the Code node
• Use a different transcript API if preferred
• Add commands like make it into a blog post , summarize in bullet points , etc.

📌 Notes

• All nodes are renamed to reflect their function
• API credentials are removed for security
• Includes colored boxes and sticky notes to guide the user
• Compatible with n8n cloud and self-hosted setups