This addon automatically assigns a fake user to specific datablocks when saving a Blender file, preventing accidental data loss of unused assets. Users can configure which data types are affected, with current support for actions, materials, geometry node groups, shader node groups, and worlds.

The tool includes an exclusion filter to ignore specific datablocks based on custom names, prefixes, or suffixes. For users who prefer granular control, the automatic on-save behavior can be disabled in favor of a manual assignment button located in the File menu.