The CQF Ruler is an implementation of FHIR's Clinical Reasoning Module and serves as a knowledge artifact repository and clinical decision support service.


For R4 use mvn jetty:run -am --projects cqf-ruler-r4

Visit the wiki for more documentation.


Before the instructions in the above "Usage" section will work, you need to install several primary dependencies.


Go to http://www.oracle.com/technetwork/java/javase/downloads/ and download the latest (version 11 or higher) JDK for your platform, and install it.

Apache Maven 3.5.3

Go to https://maven.apache.org, visit the main "Download" page, and under "Files" download the 3.5.3 binary. Then unpack that archive file and follow the installation instructions in its README.txt. The end result of this should be that the binary "mvn" is now in your path.