An autonomous robot is provided, that includes a main body having a frame that includes a back end and a front end. The frame includes a first frame extension and a second frame extension that connects the back end of the frame to the front end of the frame. The front end of the frame includes a path to an open volume disposed between the first frame extension, the second frame extension and the back end. Further provided is a drive system connected to the frame, a retention system coupled to the frame, a lift mechanism attached to the frame, and a sweeper attachment having a dimension to substantially fit within the open volume of the main body. The sweeper attachment is connectable to the retention system to raise and lower of the sweeper attachment using the lift mechanism. Further provided is a controller interfaced with the drive system, the retention system and the lift mechanism. The controller is configured to activate the retention system to connect the frame with the sweeper attachment when the main body is disposed over the sweeper attachment and the sweeper attachment is disposed substantially within the open volume. The drive system is controlled by the controller to move the autonomous robot and activate the sweeper attachment to cause sweeping of a surface.