I have a master subscription and am able to create and share private (unpublished) homebrew items with the players in my campaign, but for some reason they can't see or add my spells. I even tried giving them the direct URL to those spells, but they get 403 errors. Are we simply unable to share homebrew spells over content sharing with a master subscription to players in the free tier?

Make sure that those homebrew spells are available for the classes your player are using.

I was hoping to have the spells viewable for my players even as just a reference, as I intend for it to be a spell attached to a magic item only.

I'm well aware that there's currently no support for homebrew spells to be assigned to homebrew magic items, but I was hoping to work around that by simply creating the spell anyway and letting my players view its details via direct link.

Edit: To illustrate what I'm attempting, here's my homebrew item which has a direct link to my homebrew spell in its description.

As the homebrew creator and GM of the campaign that this item and spell are shared in, if I click that link, it takes me directly to the spell details page:

My players only get a 403 error when they click the link though.

Oh, I see.

I am afraid that without publishing those spells, the players have no way to see them listed.

I tag this as Request, since it is a thing that could be helpful.

Thank you! Right now I've just sent my players screenshots of the homebrew spell descriptions for their own reference but it would of course be great to have everything directly accessible on Beyond as well.

This is still a terribly annoying problem.