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English vocabulary bot for Telegram with Gemini & random word API

Cong NguyenCong Nguyen
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2/3/2026
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📄 What this workflow does

Every 3 hours, the workflow fetches 3 random English words, asks Gemini to generate a short Vietnamese vocabulary digest (word, Vietnamese meaning, and an example sentence), and sends it to a Telegram chat. Perfect for steady, low-effort vocab exposure in groups.

👤 Who is this for

  • English learners who want a gentle, automated learning cadence.
  • Teachers/tutors who share daily vocab in Telegram groups.
  • Community admins who want lightweight, useful content for members.
  • Anyone who prefers bite-sized language learning on autopilot.

✅ Requirements

  • Gemini API access (configured in n8n).
  • Telegram Bot token + chat ID (the chat you want to receive messages).
  • Internet access to Random Word API (no API key required).
  • n8n instance with outbound HTTPS access.

⚙️ How to set up

  1. Add your Gemini credentials in n8n (the Google Gemini/PaLM node).
  2. Add your Telegram credentials and set the chatId in the “Send a text message” node.
  3. (Optional) Adjust the schedule interval (default: every 3 hours).
  4. (Optional) Change the number of words by updating the HTTP Request URL param words=3.
  5. (Optional) Edit the Gemini prompt language/content to fit your style (currently Vietnamese output).
  6. Run once to test; confirm the message arrives in Telegram.

🔁 How it works

  1. Schedule Trigger → runs every 3 hours.
  2. HTTP Request → calls random-word-api to get 3 words.
  3. Edit Fields (Set) → wraps the API response under word.
  4. Aggregate → prepares the word field for the LLM.
  5. Message a model (Gemini) → creates a Vietnamese digest: English word, Vietnamese meaning, and example sentence for each word.
  6. Send a text message (Telegram) → posts the digest to your specified chat.

💡 About Margin AI

Margin AI is an AI-services agency that acts as your AI Service Companion. We design intelligent, human-centric automation solutions—turning your team’s best practices into scalable, automated workflows and tools. Industries like marketing, sales, and operations benefit from our tailored AI consulting, automation tools, chatbot development, and more.

English Vocabulary Bot for Telegram with Gemini and Random Word API

This n8n workflow automates the process of fetching a random English word, getting its definition and example usage using Google Gemini, and then sending this information to a Telegram chat at scheduled intervals. It's an excellent way to expand your vocabulary effortlessly.

What it does

  1. Triggers on a Schedule: The workflow starts at predefined intervals (e.g., daily, hourly) using a Schedule Trigger.
  2. Fetches a Random Word: It makes an HTTP request to an external API (likely a random word API) to get a new English word.
  3. Enhances Word Information with Gemini: The fetched word is then sent to Google Gemini, which generates a comprehensive definition and an example sentence for the word.
  4. Formats the Output: The word, its definition, and the example sentence are combined into a single, well-structured message.
  5. Sends to Telegram: Finally, this formatted message is sent to a specified Telegram chat, providing you with a new vocabulary entry.

Prerequisites/Requirements

  • n8n Instance: A running n8n instance.
  • Telegram Bot Token: A Telegram bot token and the chat ID where you want to receive the messages. You'll need to create a bot via BotFather on Telegram.
  • Google Gemini API Key: An API key for Google Gemini to access its language model capabilities.
  • Random Word API Key (Optional, but recommended): The workflow uses an HTTP Request node, which likely calls an external API for random words. While some public APIs might not require a key, many do for higher rate limits or specific features. You may need to sign up for an account and obtain an API key for the chosen random word service.

Setup/Usage

  1. Import the Workflow:
    • Copy the provided JSON code.
    • In your n8n instance, go to "Workflows" and click "New".
    • Click the three dots menu (...) in the top right corner and select "Import from JSON".
    • Paste the JSON code and click "Import".
  2. Configure Credentials:
    • Telegram Node:
      • Click on the "Telegram" node.
      • Click "New Credential" or select an existing Telegram credential.
      • Enter your Telegram Bot Token.
      • Specify the Chat ID where the bot should send messages.
    • Google Gemini Node:
      • Click on the "Google Gemini" node.
      • Click "New Credential" or select an existing Google Gemini credential.
      • Enter your Google Gemini API Key.
    • HTTP Request Node:
      • Click on the "HTTP Request" node.
      • Review the URL and any headers or authentication required by the random word API you intend to use. Update as necessary.
  3. Configure Schedule Trigger:
    • Click on the "Schedule Trigger" node.
    • Adjust the "Mode" (e.g., "Every Day", "Every Hour") and "Value" to set how frequently you want to receive new words.
  4. Activate the Workflow:
    • Once all credentials and settings are configured, click the "Activate" toggle in the top right corner of the n8n editor to enable the workflow.

The bot will now automatically send a new English word with its definition and an example to your Telegram chat according to your defined schedule.

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