Systems and methods for automated computer systems event processing are described herein. At least some example embodiments include a communication interface that receives an event message and a processing unit (coupled to the communication interface) that processes the event message and that further obtains, parses and tokenizes an character string that includes one or more delimited elements selected from the group consisting of a constant, a variable and a function, wherein each function accepts as input the one or more delimited elements. The processing unit further evaluates the parsed and tokenized character string in response to receiving the event message and initiates an action based upon the result of the evaluation. The processing unit also creates a common execution environment for performing the processing, obtaining, parsing, tokenizing and evaluation.