Working at one, I get hammer out (9)
I believe the answer is:
negotiate
'hammer out' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their base form.
Perhaps they are linked in a way I don't understand?
'working at one i get' is the wordplay.
'working' is an anagram indicator.
'at'+'one'+'i'+'get'='atoneiget'
'atoneiget' anagrammed gives 'NEGOTIATE'.
Can you help me to learn more?
(Other definitions for negotiate that I've seen before include "Bring about by mutual agreement" , "treat! Yes!" , "I get a note (anag) - bargain" , "Discuss the terms of an arrangement" , "as diplomat does" .)