The Truly Dead Code Detector

Read more at What is Codekvast? and Why Codekvast?

What is Codekvast?

Codekvast detects Truly Dead Code in Java-applications.

By Truly Dead Code we mean code that is in production, but has not been used by anyone for a significant period of time.

Continuously detecting and removing dead code provides the following benefits:

  • Shorter Development Cycles.
  • Reduced Technical Debt.
  • Reduced Risk for Security Exploits.
  • Faster Developer On-boarding.

Codekvast requires minimal changes to your application, and is currently available for Java and Scala (JVM 7 or higher).

You enable Codekvast by attaching the Codekvast Agent to your application.

The agent inspects the application and prepares an inventory of all methods in your packages. The agent then records the instants any of those methods are invoked.

The agent periodically uploads collected data to the Codekvast Dashboard, which offers a web interface for analyzing the collected data.

Modern IDEs like IntelliJ IDEA can detect dead code which have package private or private visibility. They can never know what potential callers there are to public and protected methods though.

This is where Codekvast can help. Codekvast records when your methods are invoked in production and stores the data for analysis in the Codekvast Dashboard.

By using the web interface offered by Codekvast Dashboard, you can find out whether a certain method, class or package is safe to remove or not.

Codekvast collects the data. You then combine that with your domain knowledge to make informed decisions about what is truly dead code that safely could be deleted.


Codekvast Agent is extremely efficient. It adds approximately 15 ns to each method invocation. If this is unacceptable, you can exclude certain time critical packages from collection.


Codekvast is currently available with self-service as a Heroku Add-on.

Not running in Heroku? Send an email to, and we will be happy to help.


Codekvast Agent is released under the MIT license.

Need more info?

Please see Contact.