Template:List Commons media in category
//commons.wikimedia.org/w/api.php?action=query&list=categorymembers&cmtitle=Category%3A&cmprop=title&cmtype=file&cmlimit=500&cmsort=timestamp&cmstart=&cmend=
Usage
edit{{List Commons media in category|category=Foreground flowers|start=20131001000000|end=20140101000000}}
//commons.wikimedia.org/w/api.php?action=query&list=categorymembers&cmtitle=Category%3AForeground+flowers&cmprop=title&cmtype=file&cmlimit=500&cmsort=timestamp&cmstart=20131001000000&cmend=20140101000000
→ API