Custom Integrations: Webhook-Triggered Calendar Events
When external tools send webhooks to Notis, they automatically create calendar events. Extend your workflow beyond Linear to any webhook-enabled service.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
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
Work arrives from many sources (Slack, email, custom apps), but only Linear triggers are wired to calendar. External work requests don't surface until they're forgotten.
- Enables calendar integration with any tool that supports webhooks
- Brings external work requests into your calendar workflow
- Supports custom business logic and non-standard integrations
- Centralizes work visibility across your entire ecosystem
Setup
Build it in a few focused steps.
- 1Connect Google Calendar to Notis.
- 2Create an automation: 'Webhook to Calendar'.
- 3Set the prompt: 'When a webhook is received with event data, extract the event title, date, and description and create a calendar event.'
- 4Select trigger: 'Notis Webhook' (Notis will provide you a unique webhook URL).
- 5Copy the webhook URL from Notis and configure your external tool to send HTTP POST requests to it with JSON event data (title, date, time, etc.).
- 6Test by sending a webhook from your external tool—the calendar event should appear.
Questions about this workflow
What format should my webhook JSON follow?
Include at least title and date. Notis can parse flexible JSON structures, but clearer schemas (with eventName, eventDate, description) work best. Notis will ask for clarification if needed.
Can I filter or transform webhook data before creating calendar events?
Yes. In your prompt, you can specify transformations: 'Only create events for high-priority webhooks' or 'Add a prefix to all event titles'.
What if the webhook data is malformed?
Notis will log the error and report it to your notification channel. You'll need to fix the webhook format from the external tool.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Linear to Google Calendar. A trigger fires from one place; an action lands in another.
Linear triggers
Google Calendar actions
Comment Received Trigger
Triggered when a comment is received.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Issue Created Trigger
Triggered when a new issue is created.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
Issue Updated Trigger
Triggered when an issue is updated. For example labels are changed, issue status is changed, etc.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Private Team Comment Created
Fires when a new comment is posted on an issue in a private Linear team (polled with the connected user's token).
Update Calendar
Updates metadata for a calendar.
Private Team Issue Created
Fires when a new issue appears in a private Linear team (polled with the connected user's token).
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
Private Team Issue Properties Updated
Fires when properties on an issue change in a private Linear team (polled with the connected user's token).
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.
Project Created
Fires when a new Linear project is created. Covers projects in both public and private teams — polls with the connected user's token, so visibility matches what the connected user can see in Linear.
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.
Project Properties Updated
Fires when properties on a Linear project change (status, lead, target date, priority, etc.). Covers projects in both public and private teams — polls with the connected user's token.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Connect any two apps with Notis in the middle.
Not just Linear and Google Calendar. Any combination from 985+ integrations.
When this happens · Trigger
Do this · Action
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