Symbolic Computation Software Composability Protocol In the direction of the software composability, on the first step we designed the Symbolic Computation Software Composability Protocol (SCSCP) by which a computer algebra system (CAS) may offer services and a client may employ them. We envisage clients for this protocol including: Web server which passes on the same services as Web services using SOAP/HTTP protocols to a variety of possible clients; Grid middleware; Another instance of the same CAS (in a parallel computing context); Another CAS running on the same computer system or remotely.