You can make an individual xTiles page public so that anyone with the link can view it — without sharing the entire project it belongs to.
To make a page public:
Open the page settings (three vertical dots icon at the top of the page).
Select “Share to web.”
Once shared, anyone with the page URL will be able to view it.
Note: It’s not possible to invite collaborators to a single page. Collaboration and access rights can only be managed at the space or project level.