Hi all
We are looking into making our own Service Desk integration with one of our customers.
Part of this journey is to get the Field type and field length of all the fields that we will be integrating.
I have found:
Standard Variable Reference - Structure for Jira (Cloud) (almworks.com)
Which gives me the type for most of the standard fields (though not the length).
But how do I get an overview of ALL the custom fields and type and length?
All help is greatly appreciated. 
Bet reagards,
Bo