Filter Help: How to prevent reprocessing Google Calendar events and duplicate Webhook sends?

[Ana_Paula_Borges_Seg]

What is your goal?

Hi everyone, I’m having trouble with my scheduling scenario. Currently, my flow searches for Google Calendar events and sends a confirmation via Webhook to my chatbot (BootConversa).

The issue is that every time the scenario runs, it picks up the same events over and over again (even the ones already processed). This leads to two main problems:

1 - Excessive consumption of operation credits.

2 - The client receives multiple confirmation messages for the same appointment.

I’ve tried using date filters like Start Date > {{now}}, but this doesn’t stop Make from reading today’s appointments repeatedly in every cycle. I need a logic that tells Make: "If this event has already been sent once, do not send it again.

Could anyone guide me on how to create a “lock” or a filter that identifies only new appointments that haven’t passed through the flow yet? Should I use a “Search” vs “Watch” module or some kind of flag in the event description?

Thanks in advance!

What is the problem & what have you tried?

I’ve tried using date filters like Start Date > {{now}}, but this doesn’t stop Make from reading today’s appointments repeatedly in every cycle. I need a logic that tells Make: "If this event has already been sent once, do not send it again.

I have already used the following filters:

condição
start
Datetime operators: Later than

AND

Status
text operators; Equal to
confirmed

Share a link to your scenario

blob:https://us2.make.com/e8d5514c-3404-47e1-86cc-c2a768cfbd80

Screenshots (scenario flow, module settings, errors)

[Karmic]

The issue isn’t the filter. It’s that you’re using “Search” instead of “Watch.”

Search pulls all matching events every run. You need Watch to trigger only on new/updated events.

Replace your Google Calendar Search module with Google Calendar > Watch Events.

This only fires when an event is created or updated, not every time the scenario runs. That alone kills the duplication.

I hope this makes it clear for you!

[Ana_Paula_Borges_Seg]

Great, thank you very much. Which of these options should I choose, please? Watch Events*?

[Karmic]

Choose By Updated Date. That way it only triggers when an event actually changes, not when it’s just created once and sits there.​​​​​​​​​​​​​​​​