Is there a REST or SOAP command which would enable or disable a filter?

I can do this using zmprov and therefore could write a small CGI app (outside of Zimbra) to call zmprov to do this.

The reason for this request is that I forward emails to my phone via a filter when I'm on the road but sometimes I forget to enable the filter via the web GUI - so I would like to enable the filter via a URL (which I would bookmark on my phone).

thanks - Angus