I don't think there is one but you can write a plugin using the hook filter:router.page. This hook gets called before the actual topic route handler.
In your plugin you can just do this:
myPlugin.filterRouterPage = function (req, res, next) { const myAnnouncementTopicId = 111; if (req.params && req.params.topic_id && parseInt(req.params.topic_id, 10) === myAnnouncementTopicId) { req.query.sort = 'newest_to_oldest'; } next(); };
