yes, i should have been more specific. in POSTMAN there is a section called pre-request script per below.
if I could find an example, it would be awesome and i will re-post it here if i figure it out.
the idea is that it checks to see if a token exists. if not, it creates one. it can also check to see if it has timed out and a new one needs to be created.
this is a huge time saver when running POSTMAN to just quickly check various APIs.