See attendee patterns across synced meetings
Ask a useful attendee question and let Notis return a ClickHouse summary when full event data syncs.
Trigger
Calendar Event Sync
Polling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).
Action
Execute ClickHouse Query
Execute a sql query in clickhouse and return the results. this is the primary action for querying data from clickhouse databases.
Why this helps
It is difficult to spot how meeting size is changing when attendee information stays inside individual events.
- Summarize attendee counts from your stored event dataset.
- Use full sync event data as a reporting cue.
- Keep results in the run report channel.
Setup
Build it in a few focused steps.
- 1Connect Google Calendar and ClickHouse once in the Notis portal.
- 2Create an automation in Automations, New Automation, or tell Notis from any channel.
- 3In one instruction, describe the attendee metric and query using your ClickHouse database and table details.
- 4Pick Calendar Event Sync as the trigger and choose where run reports should go.
- 5Test with one real sync and check that the query uses the intended dataset.
Questions about this workflow
Does the workflow count attendees directly from the trigger?
The trigger returns attendee details. This workflow uses the ClickHouse query action, so the underlying ClickHouse dataset and query context must be available.
Can it identify changes in attendee counts over time?
Yes, if your ClickHouse data contains the needed event history or date range. Any missing history or baseline must be supplied or captured separately.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Calendar to ClickHouse. A trigger fires from one place; an action lands in another.
Google Calendar triggers
ClickHouse actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Execute ClickHouse Query
Execute a sql query in clickhouse and return the results. this is the primary action for querying data from clickhouse databases.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Get Database Schema
Get comprehensive schema overview of an entire database including all tables and optionally their column definitions. essential for ai agents to understand the complete database structure in a single call.
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Get Table Schema
Get detailed schema information for a specific table including column definitions, types, keys, and optionally sample data. this is essential for ai agents to understand table structure before constructing queries.
Event Canceled or Deleted
Triggers when a Google Calendar event is cancelled or deleted. Returns minimal data: event_id, summary (if available), and cancellation timestamp.
List ClickHouse Databases
List all databases in the clickhouse instance. useful for discovering available databases before querying tables.
Event Starting Soon
Triggers when a calendar event is within a configured number of minutes from starting. Returns event details, time remaining, attendees, and join links when available.
List ClickHouse Tables
List tables in clickhouse databases. returns information about tables including their engine, size, and row count.
Calendar Event Changes
**SOON TO BE DEPRECATED** - Use Calendar Event Sync (polling trigger) instead. Real-time webhook trigger for calendar event changes. Returns event metadata only. For full event data, use Calendar Event Sync (polling trigger).
Event Created
Polling trigger that fires when a new calendar event is created. Returns event ID, summary, start/end times, and organizer info.
Calendar Event Sync
Polling trigger that returns full event data including details, attendees, and metadata. For real-time notifications with basic info, use Calendar Event Changes (webhook).
Connect any two apps with Notis in the middle.
Google Calendar and ClickHouse, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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