Ele não tem um viés.
Ele não é tendencioso.
Ele não é orientado para alguma tendência/facção/partido/ideologia/propaganda/escola de pensamento etc...
Having an agenda would be, in this case, tantamount to be biased, to have hidden (covert - more so) interests.
Here, it would mean "independent" and unbiased, withouth representind proxy interests......she launched herself as a candidate by the Gibraltar Social Democrats (GSD) in the by-election of 4 July 2013. In a press conference, she stated that she hasn't an agenda (besides the desire to contribute positively to Gibraltar), and said that she was "disappointed" with the policy practised by the ruling party (GSLP) and willing to change the composition of the parliament,...https://en.wikipedia.org/wiki/Marlene_Hassan_Nahon