A system and method for automatically generating web services from an existing web site having web page based business processes or transactions. A script is generated representative of the user navigation sequence involved to perform the transaction. The script elements include the web application calls, input/output parameters, and the interrelation between the elements of the transaction. A WSDL file, web service interface code, and web service implementation code are automatically, i.e. computer-aided, generated from the navigation script without a user required to have advance programming skills. The web service may be published locally to the web site or on a remote site.