Agents (15)
'agents' is the definition.
(representatives)
This is the entire clue.
(Other definitions for reps that I've seen before include "Travelling salespeople, in short" , "Travelling salesmen" , "Salesmen, in short" , "Salesman, in short" , "Agents" .)
(Other definitions for representatives that I've seen before include "MPs!" , "10 [HOUSE] of these in US" , "Officers" .)