Upvote:1
No
There are two types of karma , positive karma and negative karma. Karma are acts done by body ,words and mind. Mindfulness itself is not a karma since it is not an act. But it will reduce the negative karma that you'd do unknowingly.because you are aware of your mind. Thus eventually it will help you to achieve nirvana even though doesn't create karma.
Upvote:1
Right mindfulness is an intentional (mental) act therefore it is kamma. However it falls under a 3rd type of kamma that is called the "kamma that ends kamma".
AN 6.63 states the noble eightfold path is the kamma that ends kamma therefore right mindfulness falls within this.
Upvote:2
Fabrication (Sankhara), consists of 50 of the 52 Mental Factors (cetasika). Mindfulness appears in the 25 mental factors which arise with wholesome consciousness. Mindfulness is wholesome as it aids liberation. Unlike some factors which accumulates Fabrication which is one which aids in not creating new fabrication which keeps a being in misery. Also what every is Wholesome is not necessary accumulation of positive Karmic Fabrications. The reduction in accumulated Karma is also Wholesome are you are more closer to liberation. Also note the 50 cetasikas are not all wholesome and they influence karmic accumulation.