Dynamically Assign a Device based on logged in user UPN

You don't even need to use the API.

Decide how you want to grab the user to assign it to ($Username in the below command) and run:

/usr/local/jamf/bin/jamf recon -endUsername $Username

@Eigger, in order to do what @hkabik suggested, you also need to make sure that Collect user and location information from LDAP is checked.. This can be enabled by navigating to Computer Management>Inventory Collection in the JSS Settings.

Nice! good to know, will test and report back. Thank you both!