Schema Changes Visible to Everyone, Instantly
When columns are added, removed, or renamed in your data table, Notis creates a calendar event so the whole team knows about the structural change.
Trigger
Table Schema Changed
Polling trigger that detects when a table's schema changes in Google Sheets. Monitors columns added/removed/renamed and inferred type/format changes. Uses snapshot-based diffing to compare schemas between polls.
Action
Create Event
Creates an event on a google calendar, needing rfc3339 utc start/end times (end after start) and write access to the calendar. by default, adds the organizer as an attendee unless exclude organizer is set to true.
Why this helps
Schema changes in shared spreadsheets often go unnoticed, leading to data confusion and broken downstream processes.
- All schema changes are instantly visible on the team calendar
- Reduces miscommunication about data structure
- Creates an audit trail of structural changes
- Helps coordinate data pipeline updates
Setup
Build it in a few focused steps.
- 1Connect both integrations.
- 2Tell Notis: 'When the schema of my Sales table in Sheets changes (columns added/removed/renamed), create a calendar event alerting the team.'
- 3Specify which table to monitor.
- 4Select 'Table Schema Changed' as your trigger.
- 5Rename or add a column to test the automation.
Questions about this workflow
What changes trigger this automation?
Any change to the table structure: columns added, renamed, removed, or type/format changes.
Can I get details about what exactly changed?
Yes. Ask Notis to include the before-and-after schema in the event description for full transparency.
What if I make many schema changes quickly?
Notis will create an event for each change. You can request batch notifications if you prefer.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Sheets to Google Calendar. A trigger fires from one place; an action lands in another.
Google Sheets triggers
Google Calendar actions
Aggregate Metric Changed
Triggers when an aggregate metric (SUM/COUNT/AVG/MIN/MAX) changes in a Google Sheets spreadsheet. This trigger monitors an aggregate calculation on a target column (optionally filtered by a search column/value) and fires when the calculated result changes.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Cell Range Values Changed
Triggers when values in a specified A1 range change in Google Sheets. This trigger monitors a specific cell or range of cells and fires when any values change.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
Conditional Format Rule Changed
Triggers when conditional formatting rules change in a Google Spreadsheet. Detects when rules are added, updated, or removed. Uses snapshot-based diffing to detect changes between polls.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Data Validation Rule Changed
Triggers when data validation rules change (added/updated/removed) in a Google Spreadsheet. Uses snapshot-based diffing to detect changes between polls.
Update Calendar
Updates metadata for a calendar.
Developer Metadata Changed
Triggers when developer metadata entries change (new/updated/removed) in a Google Spreadsheet. Uses snapshot-based diffing to detect changes between polls.
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
Filtered Range Values Changed
Polling trigger that monitors Google Sheets filtered ranges for value changes. Uses snapshot-based diffing to detect when values matching a data filter change. Emits the matched values when changes are detected.
Create Event
Creates an event on a google calendar, needing rfc3339 utc start/end times (end after start) and write access to the calendar. by default, adds the organizer as an attendee unless exclude organizer is set to true.
New Rows in Google Sheet
Simple polling trigger that monitors Google Sheets for new rows. Detects when new rows are added and returns the complete row data. Perfect for triggering any workflow based on new sheet entries.
Delete event
Deletes a specified event by `event id` from a google calendar (`calendar id`); this action is idempotent and raises a 404 error if the event is not found.
New Sheet Added in Google Spreadsheet
Polling trigger that detects when a new sheet is added to a Google Spreadsheet.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Connect any two apps with Notis in the middle.
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When this happens · Trigger
Do this · Action
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