The text in the documentation suggests that we can use the attributethrottle_classes=[UserRateThrottle] In the decorator@action, however, this does not seem to be true. Because the action decorator does not recognize thethrottle_classes.

I tested countless ways until I came to this conclusion.

https://www.django-rest-framework.org/api-guide/throttling/

It's also possible to set throttle classes for routes that are created using the@action decorator. Throttle classes set in this way will override any viewset level class settings.

@action(detail=True,methods=["post"],throttle_classes=[UserRateThrottle])defexample_adhoc_method(request,pk=None):content= {'status':'request was permitted'   }returnResponse(content)