WSO2 Complex Event Processor(WSO2 CEP) is real-time and it has a quick response time in identifying patterns in incoming stream of events/large data feeds with minimum storage. WSO2 CEP is popular among community since it’s simple and easy to use as well as since it is free and open source. The core of WSO2 CEP is Siddhi which is a SQL-like query language that is used for complex queries. An Eclipse plugin for Siddhi is a valuable approach for the developer community since eclipse IDE is a widely used IDE among developers. Eclipse plugin for Siddhi will comprise syntax highlighting, auto completion, error reporting, running and debugging support for Siddhi based on Siddhi grammar using Xtext and Java.