Agent is not commonly getting a new coat (7)
I believe the answer is:
repaint
'coat' is the definition.
(I know that repaint is a more specific form of the action paint)
'agent is not commonly getting' is the wordplay.
'agent' becomes 'rep' (short for representative).
'is not commonly' becomes 'aint' (non-standard version of 'isn't' or 'aren't').
'getting' is a charade indicator (letters next to each other).
'rep'+'aint'='REPAINT'
'a new' acts as a link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for repaint that I've seen before include "put on new coat" , "put on another coat" , "To provide fresh cover" .)