Research in Multi-Agent Systems extensively approached observation mechanisms from outside. Agents are black boxes and much work allows inferring internals or collective activities from the observation of their interactions. In this paper, we propose to extend the expressiveness of software agents and enact new observable features. Our framework leads to an extended definition of agent; the central role of a software environment to deal with these agents; and a mechanism we named oversensing to refer to the observation of these agents. This paper presents these notions and provides preliminary insights on their exploitation.