Slack Reminder After Calendar Events

Send Calendar Event Reminder Via Slack

This workflow automatically sends you a friendly Slack reminder whenever one of your Google Calendar events ends. It checks your upcoming events and lets you know what's next — or if your schedule is clear for the rest of the day.

What It Does

1. Detects when a Google Calendar event ends.
2. Fetches a list of your upcoming events starting from the current time.
3. Uses an AI agent to compose a friendly Slack message summarizing the event that ended and the next upcoming event.
4. Sends this message as a direct message to you on Slack.

What You Need

• A Google Calendar account with events
• A Google Calendar API connection configured in Needle
• A Slack workspace with a connection that has permission to send direct messages
• An AI node configured in Needle for composing messages

How the Flow Works

Output

At the end of this workflow, you'll receive a Slack direct message letting you know your last event just ended and informing you about your next scheduled event's title and start time. If there are no upcoming events, it will simply tell you your schedule is clear.

Notes

• Make sure your calendar ID and Slack user are correctly specified in the connector configurations.
• The message tone and content can be customized by modifying the prompt in the AI node.
• This setup relies on accurate event end times — events that are modified without actually ending may not trigger notifications immediately.