I'm trying extract all elements from parts category from revit metadata using Model Derivate API but I can't find any. How can I get part category from revit metadata? metadata look
When using this endpoint GET {urn}/metadata/{guid}/properties, you get all the properties of objects.
To get categories, you should use this endpoint GET {urn}/metadata/{guid} which gives you the hierarchy tree of all objects in the scene.
Revit files usually has this structure categories / families / types / instances, so if you parse the tree, you can easily get all objects for a given category.