InvPeek

InvPeek is a minimalist library mod for Minecraft that gives players the ability to "peek" into small inventories that lack standard graphical interfaces (GUI). The modification primarily works with certain standard game components—for example, it allows viewing the contents of armor stands and bookshelves, which normally don't have inventory windows.

A key feature of the mod is its ease of adaptation: even third-party developers can easily add support for various blocks or entities, whether it's vanilla or modded Minecraft content. It includes a clear and flexible toolkit for this. Official documentation for integration is still under development, but given its simple approach, it should be available soon.