Fusion 360 Attributes - Autodesk
help.autodesk.com › cloudhelp › ENUAn attribute is simply the ability to associated named values with a Fusion 360 entity. The named value is saved by Fusion 360 and can be retrieved later, either from the entity it is on or by querying the design. This doesn't seem like much, but it provides that ability to do some interesting things.
Attributes.add Method - Autodesk
help.autodesk.com › cloudhelp › ENUThe name of the attribute. This must be unique with respect to other attributes in the group. value: string: The value of the attribute. The size of an attribute value is limited to 2MB (2097152 bytes). If you need to save data that is larger than 2MB you'll need to break it into pieces and save it in multiple attributes.