Hi @<1523704152130064384:profile|SmallGiraffe94>
Yes it is possible!

set the User Properties of a dataset when creating a Dataset with

A bit hackish but should work.

dataset = Dataset.create(dataset_project="project", dataset_name="name")
dataset._task.set_user_properties(key="value")

dataset_ids = Task.query_tasks(
    project_name=["project/.datasets/name"],
    task_filter=dict(
        type=[str(Task.TaskTypes.data_processing)],
        exact_match_regex_flag=False,
        search_hidden=True,
        _allow_extra_fields_=True,
        _all_=dict(fields=['hyperparams.properties.key.value'], pattern="^value$"),
        order_by=['-created'],
    )
)
dataset.get(dataset_id=dataset_ids[0])

Maybe this should be incorporated into the top level interface? What is the use case?
Would tags make more sense ?