n8n syncs Google Calendar shifts and alerts staff via Slack about changes or shortages.

• n8n installed.

• Google Calendar with API access.

• Slack workspace with API token.

1. Prepare n8n Environment

• Navigate to http://localhost:5678 and log in.

• Click “Workflows,” then “+ New,” and name it (e.g., “Shift Coordinator”). Click “+” to start.

   

2. Trigger Node: Google Calendar

• Node: Google Calendar

• Settings:

• Credentials: Google API key

• Resource: Event

• Operation: Trigger on Event Change

• Output: Shift data (e.g., {{ $json.start }} and {{ $json.attendees }}).

   

3. Notify Node: Slack

• Node: Slack

• Settings:

• Credentials: Slack API token

• Channel: #staff

• Text: Shift update: {{ $node["Google Calendar"].json.summary }} on {{ $node["Google Calendar"].json.start }}

• Output: Message posted.

• Flow: Google Calendar (trigger) → Slack (notify).

• Execution: ~10 seconds.

• Reduces scheduling errors by ~90%.

• Ensures staff coverage.

• Saves coordination time.

• Calendar Fail: Check API scope.

• Slack Issues: Verify channel access.

   

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