Check for an existing invoice event first
A quick calendar search can keep a payment update from creating duplicate work.
Trigger
Webhook received
Notis starts this workflow when an external tool or custom backend sends an HTTP request.
Action
Find event
Finds events in a specified google calendar using text query, time ranges (event start/end, last modification), and event types; ensure `timemin` is not chronologically after `timemax` if both are provided.
Why this helps
Repeated or retried payment notifications can lead to duplicate calendar entries.
- Search for an existing event using invoice details available in the notification.
- Create a new event only when your instruction's match criteria are not met.
- Keep repeat notifications from cluttering the calendar.
Setup
Build it in a few focused steps.
- 1Connect BTCPay Server and Google Calendar once in the Notis portal.
- 2Create an automation in Automations, New Automation, and name it for duplicate prevention.
- 3Tell Notis which invoice details to search for and what to do when a matching event is found.
- 4Choose a Notis webhook trigger and select where run reports should go.
- 5Test with one real notification and verify both the matching and no-match behavior.
Questions about this workflow
Can a search guarantee that duplicates never happen?
No. Results depend on the invoice details available and the matching rule you describe. Test with your real event format.
What should count as a match?
Specify stable details such as an invoice identifier, if present in the webhook and event description.
When this happens · Trigger
Do this · Action
Supported Triggers and Actions
Notis builds workflows that link Btcpay server to Google Calendar. A trigger fires from one place; an action lands in another.
Btcpay server 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.
Btcpay server and Google Calendar, or any other combination from 1,000+ integrations.
When this happens · Trigger
Do this · Action
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