For a web application, set the Servlet initialization parameter org.jboss.weld.development to true:

<web-app version="3.1" xmlns="http://xmlns.jcp.org/xml/ns/javaee/"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd">



    <context-param>

        <param-name>org.jboss.weld.development</param-name>

        <param-value>true</param-value>

    </context-param>



</web-app>

For a Java SE application, set the system property org.jboss.weld.development to true:

java -cp myCoolApp.jar -Dorg.jboss.weld.development=true com.foo.MyMain

or use the Weld.property() method:

org.jboss.weld.environment.se.Weld;


public static void main(String[] args) {

   Weld weld = new Weld().property("org.jboss.weld.development", true);

   try (WeldContainer container = weld.initialize()) {

      ...

   }

}

You should see the following log message during initialization of your application:

=====================================
 Weld Development Mode: ENABLED
 ------------------------------------
 Disable this mode in production - it may have negative impact on performance and/or represent a potential security risk
=====================================

This tool allows to inspect the application CDI components at runtime. See also the demo application hosted on OpenShift.

JSON data are available through the REST API, eventually (if JMX support is enabled) through the MXBean of name org.jboss.weld.probe:type=JsonData,context=ID where ID should be replaced with an idenfitier of an application.

However, a default UI - HTML client (single-page application) is only available in a web application at {webappContextPath}/weld-probe, e.g. http://localhost:8080/weld-numberguess/weld-probe.

Right now, the integration is provided for WildFly 10, Tomcat and Jetty (Weld Servlet) and Weld SE.