Abstract: Methods and apparatuses are described for automated analysis, categorization, and behavior prediction of computer scripts using rules-based pattern matching. A server receives from a client device, a request for analysis of a process flow decision. The server identifies computer scripts that execute to generate the process flow decision. For each identified computer script: the server identifies text patterns in the computer script and categorizes the computer script based upon the identified patterns; the server converts the computer script into an expression tree data structure; the server traverses the expression tree to determine logical expressions that return a true result; the server parses each logical expression that returns a true result to identify parameters that contribute to the true result; the server generates a response to the request for analysis of the process flow decision and transmits the response to the request to the client computing device.