How to trigger a Push Notification via API based on custom user actions?

Hi everyone,

I’m currently integrating PushCrew (VWO Engage) into our web app and I’d like to trigger a push notification programmatically via the API whenever a specific user action occurs (e.g., completing a form or clicking a CTA).

I’ve reviewed the official API docs
, but I’m still unclear on a few things:

Can I trigger a push notification directly from a frontend event, or does it require server-side handling?

What’s the correct flow to send a push to a specific subscriber, assuming I have their subscriber_id?

Is there any rate limiting or restriction on how many push calls can be made per minute/hour?

Any working examples or insights would be really helpful.
Thanks in advance!

ragdoll hit