Keep a review event current when plans change
Send Notis the changed review details and the event identifier, then update the existing calendar entry.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Patch Event
Updates specified fields of an existing event in a google calendar using patch semantics (array fields like `attendees` are fully replaced if provided); ensure the `calendar id` and `event id` are valid and the user has write access to the calendar.
Why this helps
When a trading review moves, an outdated calendar block can cause missed follow-up or conflicting plans.
- Update the existing event instead of leaving stale review details.
- Use only the changes supplied in the notification.
- Keep the event tied to its ticker or review context.
Setup
Build it in a few focused steps.
- 1Connect Alpaca and Google Calendar once in the Notis portal.
- 2Create an automation in Automations, New Automation, and name it for review updates.
- 3Tell Notis to patch the specified event using the event ID, calendar ID, and changed details supplied in the notification.
- 4Choose the webhook trigger and a report channel.
- 5Send one real update for an existing test event and verify its changed details.
Questions about this workflow
Can the workflow identify the event automatically?
This action requires a valid calendar ID and event ID. Include them in the webhook notification or define another supported way for Notis to obtain them.
Does the action replace every event field?
Patch Event uses patch semantics and changes only the fields provided. Array fields such as attendees are fully replaced if supplied.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Alpaca to Google Calendar. A trigger fires from one place; an action lands in another.
Alpaca triggers
Google Calendar actions
Recurring trigger
Notis starts this workflow on a schedule, such as daily, weekly, or during business hours.
Insert Calendar into List
Inserts an existing calendar into the user's calendar list.
Webhook trigger
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Update Calendar List Entry
Updates an existing entry on the user\'s calendar list.
Delete Calendar
Deletes a secondary calendar. use calendars.clear for clearing all events on primary calendars.
Update Calendar
Updates metadata for a calendar.
Clear Calendar
Clears a primary calendar. this operation deletes all events associated with the primary calendar of an account.
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.
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.
Create a calendar
Creates a new, empty google calendar with the specified title (summary).
Connect any two apps with Notis in the middle.
Alpaca and Google Calendar, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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No card. Works with personal or business Google Calendar.