Slack to Google Calendar Event Automator – n8n Automation Template

October 16, 2025

Aladuddin Aladin

This workflow automates the process of creating and managing Google Calendar events directly from a Slack channel. By monitoring messages tagged with the (calendar) emoji, it uses AI to generate event details, create new calendar entries, and automatically add attendees based on Slack reactions. Perfect for teams that want to streamline event scheduling without leaving Slack.

Features

  • 🔎 Slack Channel Monitoring – Scans Slack messages for calendar-related event requests.
  • 🤖 AI-Powered Event Creation – Uses ChatGPT and integrated tools to generate event titles, parse dates, times, locations, and event type.
  • 📆 Google Calendar Integration – Automatically creates new events with title, description, time, and location details.
  • Emoji-Based RSVP – Tracks Slack reactions and adds those users as attendees to the Google Calendar event.
  • 🔄 Duplicate Prevention – Checks existing events and avoids creating duplicates by tagging them with event IDs.
  • 👥 Attendee Management – Continuously updates the event with new participants from Slack reactions.
  • Scheduled Workflow – Runs every 30 minutes to stay in sync with Slack activity.
  • 🧩 Flexible & Extendable – Built with n8n nodes (Slack, Google Calendar, Code, AI Agents, LangChain tools) for easy customization.

About the author

Alauddin Aladin is an AI Automation expert helping businesses streamline operations, boost productivity, and scale effortlessly using tools like Make.com and n8n. With over a decade of experience in digital systems and automation strategy, Alauddin empowers entrepreneurs to save time and grow smarter through intelligent workflows and AI-driven solutions.

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