Create Cal OAuth webhooks from Trello activity
When an integration comes online, establish the Cal notification path automatically.
Trigger
New Activity Trigger
Triggered when there is activity in Trello.
Action
Create OAuth client webhook configuration
Creates a webhook for an existing oauth client to send real-time cal.com event notifications (e.g., `booking created`, `meeting ended`) to the `subscriberurl`, enabling integration with external systems or workflow automation.
Why this helps
Webhook setup is easy to miss when integration work is tracked as activity.
- Connects event notifications faster
- Reduces integration gaps
- Creates an auditable setup report
Setup
Build it in a few focused steps.
- 1Connect Trello and Cal in Notis.
- 2Create an automation describing which integration activity should create the Cal OAuth client webhook.
- 3Select Trello New Activity Trigger.
- 4Choose reports and test with one qualifying activity event.
Questions about this workflow
What does the Cal webhook do?
It sends Cal event notifications to the subscriber URL for the OAuth client.
What must be supplied?
The existing OAuth client, subscriber URL, and desired notification triggers must be available.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Trello to Cal. A trigger fires from one place; an action lands in another.
Trello triggers
Cal actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Add member to team
Adds a new member to a specified team within an organization by creating a team membership.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Add organization attribute option
Adds a new option to an organization's attribute, requiring a display `value` and a `slug` unique for that attribute.
Card Archived Trigger
Triggered when a card is archived in the specified board
Delete oauth client webhook
Permanently deletes a specific webhook subscription of an oauth client in the cal application, stopping its notifications.
New Activity Trigger
Triggered when there is activity in Trello.
Cancel booking via uid
Cancels an existing and active cal.com booking using its unique identifier (uid).
New Board Trigger
Triggered when a board is created in the specified workspace
Check calendar availability
Retrieves free/busy availability for a specified calendar to aid scheduling without revealing event details; requires an existing, accessible calendar, noting that data granularity can vary.
New Card Trigger
Triggered when a card is created in the specified board
Check gcal synchronization status
Call this read-only action to verify the connection and synchronization status of a user's google calendar integration with cal.
Card Updated Trigger
Triggered when a specific card is updated
Check ics feed calendar endpoint
Checks an ics feed url (expected as a query parameter) to verify its validity, accessibility, and icalendar data integrity.
Check Stripe status
Verifies if stripe is correctly connected to the cal scheduling system and functional for processing payments, reporting only on the integration's status.
Connect any two apps with Notis in the middle.
Trello and Cal, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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