Green’s Dictionary of Slang

OK coakley adv.

also OK koakley

(US) fine, satisfactory.

1927		T.A. Dorgan in Zwilling TAD Lex. (1993) 61: What you boys say about squaws is O.K. Koakley with me.
1928		T.A. Dorgan in Zwilling TAD Lex. (1993) 61: Well, the fust mounted cop looks O.K Coakley ta me.