Getting user session's tag

How can I retrieve the tags from a specific user session?

Suppose I set a tag in my mobile app

tag as 'com.company.user.session'

value as 'someUserSessionId';

Then is there an API, that can be utilized to retrieve all other tags of the user, that were set during user's journey.

In input parameter to that API I want to use, above mentioned tag & its value.

And in response it should return all the other tags information for this user's session.

Please let me know, this is very important for an upcoming analytic business engagement with my organization.