/usr/share/akonadi/ is in kdepim-runtime 4:4.8.4-0ubuntu0.2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/akonadi/agents/
/usr/share/akonadi/agents/akonadinepomukfeederagent.desktop
/usr/share/akonadi/agents/akonotesresource.desktop
/usr/share/akonadi/agents/birthdaysresource.desktop
/usr/share/akonadi/agents/calendarsearchagent.desktop
/usr/share/akonadi/agents/contactsresource.desktop
/usr/share/akonadi/agents/davgroupwareresource.desktop
/usr/share/akonadi/agents/icalresource.desktop
/usr/share/akonadi/agents/imapresource.desktop
/usr/share/akonadi/agents/invitationsagent.desktop
/usr/share/akonadi/agents/kabcresource.desktop
/usr/share/akonadi/agents/kalarmdirresource.desktop
/usr/share/akonadi/agents/kalarmresource.desktop
/usr/share/akonadi/agents/kcalresource.desktop
/usr/share/akonadi/agents/kdeaccountsresource.desktop
/usr/share/akonadi/agents/knutresource.desktop
/usr/share/akonadi/agents/kolabproxyresource.desktop
/usr/share/akonadi/agents/localbookmarksresource.desktop
/usr/share/akonadi/agents/maildirresource.desktop
/usr/share/akonadi/agents/maildispatcheragent.desktop
/usr/share/akonadi/agents/mboxresource.desktop
/usr/share/akonadi/agents/microblog.desktop
/usr/share/akonadi/agents/mixedmaildirresource.desktop
/usr/share/akonadi/agents/mtdummyresource.desktop
/usr/share/akonadi/agents/nepomuktagresource.desktop
/usr/share/akonadi/agents/nntpresource.desktop
/usr/share/akonadi/agents/notesresource.desktop
/usr/share/akonadi/agents/openxchangeresource.desktop
/usr/share/akonadi/agents/pop3resource.desktop
/usr/share/akonadi/agents/vcarddirresource.desktop
/usr/share/akonadi/agents/vcardresource.desktop