I created a Github Discussion to answer this, because I think the answer will be useful for others too: https://github.com/dagster-io/dagster/discussions/12598

My sensor is targeting in asset job, created by define_asset_job, which has a selection parameter defined, which should work, as I assume intuitively, as

asset_selection

defined in a sensor decorator. Many thanks for creating this github discussion. I will follow up the helpful example given. Following the source code I was inclined to do just that, (handing over the partitions def to the tags parameter in a RunRequest). So I was on the right way. I was actually hoping for a predefined function like run_request_for_partition which accepts a MultiPartitionKey as a "parition key" and not only a "str". That could be handy, would you agree?

I was first confused that this is a subclass of str