Metal god finds Indian city (4)
I believe the answer is:
'indian city' is the definition.
(I've seen this in another clue)
'metal god' is the wordplay.
'metal' becomes 'ag' (silver).
'god' becomes 'Ra' (Egyptian god).
'finds' is the link.
(Other definitions for agra that I've seen before include "Taj Mahal city" , "North Indian city, former capital of the Mogul empire" , "includes Taj Mahal" , "Home to the Taj Mahal" , "mausoleum site" .)