Clean up Ably subscriptions for canceled events
Stop canceled meetings from generating stale notifications.
Trigger
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.
Action
Delete Channel Subscription
This tool allows you to unsubscribe devices or clients from push notifications for specific channels. the operation is asynchronous, so immediate requests after deletion may briefly still return the subscription.
Why this helps
Canceled work leaves behind subscriptions that keep sending noise and consume attention.
- Reduce stale push notifications
- Keep channels aligned with active work
- Automate cleanup after cancellations
Setup
Build it in a few focused steps.
- 1Connect Google Super and Ably once in Notis.
- 2Create an automation for canceled event cleanup.
- 3Tell Notis to identify the related channel and remove its push subscriptions.
- 4Pick Event Canceled or Deleted as the trigger.
- 5Choose a report channel and test with a canceled event.
Questions about this workflow
What if no matching channel exists?
Tell Notis to report the missing match and leave unrelated subscriptions unchanged.
Is removal immediate?
The Ably operation is asynchronous, so propagation may take a short time.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Google Super to Ably. A trigger fires from one place; an action lands in another.
Google Super triggers
Ably actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Query Batch Presence
This tool enables querying the presence states of multiple channels in a single api request. the api retrieves the member presence details of the specified channels in parallel.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Query Batch Presence History
This tool enables querying presence history for multiple channels in a single api request. it uses the get endpoint at https://rest.ably.io/presence to retrieve the member presence history details of the specified channels in parallel.
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.
Create Ably Channel
Creates a new channel or retrieves an existing channel in ably. this tool allows you to programmatically create and initialize channels for real-time messaging. since ably creates channels implicitly when first used, this action publishes an empty initialization message to create/activate the channel.
Attendee Response Changed
Polling trigger that fires when any attendee's RSVP changes to accepted, declined, or tentative. Returns attendee info and current status.
Delete Channel Subscription
This tool allows you to unsubscribe devices or clients from push notifications for specific channels. the operation is asynchronous, so immediate requests after deletion may briefly still return the subscription.
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.
Get Channel Details
This tool retrieves metadata and details for a specific channel in ably. it returns a channeldetails object containing information about the channel's status, occupancy, and other metadata. the endpoint provides visibility into channel activity, including metrics such as connections, presence, publishers, and subscribers, and requires appropriate permissions.
Comment Added (Docs/Sheets/Slides)
Triggers when a new comment is added to Google Docs, Sheets, or Slides.
Get Channel History
This tool retrieves the message history for a specified ably channel. it uses the get /channels/{channelid}/messages endpoint to return a paginated list of messages in chronological order, subject to parameters such as 'channelid', 'limit', 'direction', 'start', and 'end'. the tool is useful for auditing, recovering missed messages, analyzing channel activity, and debugging message flows. authentication is required via basic or token authentication.
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.
Get Channel Presence History
This tool retrieves the history of presence messages for a specified channel in ably. it allows you to query presence events on a channel within a given time period.
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.
Get Ably Service Time
This tool retrieves the current server time from ably's service in milliseconds since the epoch. it is particularly useful for time synchronization and generating valid tokenrequest timestamps to prevent replay attacks. the endpoint supports multiple content types, handles http errors, network issues, and is a fundamental tool for ensuring accurate timing in ably applications.
Connect any two apps with Notis in the middle.
Google Super and Ably, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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