https://opales.oca.eu/foswiki/bin/view/Main/WebRss
For other Foswiki webs, replace /Main/
with the name of the web:
https://opales.oca.eu/foswiki/bin/view/Intranet/WebRss
https://opales.oca.eu/foswiki/bin/view/Main/WebRss
https://opales.oca.eu/foswiki/bin/view/Sandbox/WebRss
https://opales.oca.eu/foswiki/bin/view/System/WebRss