Scoff after agent provides quote, perhaps (6)
I believe the answer is:
repeat
'quote perhaps' is the definition.
(quoting is a kind of repeating)
'scoff after agent' is the wordplay.
'scoff' becomes 'eat' (I've seen this before).
'after' says to put letters next to each other.
'agent' becomes 'rep' (short for representative).
'eat' put after 'rep' is 'REPEAT'.
'provides' is the link.
(Other definitions for repeat that I've seen before include "Parrot" , "old TV show" , "Another chance to see show" , "Say or perform again" , "Echo words" .)