As stated earlier, the SPADE Agent Library is a software component to ease and help the development of software agents that work with the SPADE platform. It provides some classes, functions and data structures to help the programmer easily deploy SPADE-based solutions in a rapid-application-development fashion.
Currently, the SPADE Agent Library is only available for the Python programming language, and it is available as a module (that you can download at http://spade2.googleprojects.com). There is also a full reference documentation of the library that you can use to see the details of every element.