diff --git a/pom.xml b/pom.xml
index ba404c5..a1cce6d 100644
--- a/pom.xml
+++ b/pom.xml
@@ -136,7 +136,7 @@
 		<dependency>
 			<groupId>com.fasterxml.jackson.jaxrs</groupId>
 			<artifactId>jackson-jaxrs-json-provider</artifactId>
-			<version>2.3.0</version>
+			<version>2.12.0</version>
 		</dependency>
 		
 		<dependency>
diff --git a/src/main/java/org/gcube/vremanagement/contextmanager/services/ContextService.java b/src/main/java/org/gcube/vremanagement/contextmanager/services/ContextService.java
index e264490..cc877cd 100644
--- a/src/main/java/org/gcube/vremanagement/contextmanager/services/ContextService.java
+++ b/src/main/java/org/gcube/vremanagement/contextmanager/services/ContextService.java
@@ -1,6 +1,5 @@
 package org.gcube.vremanagement.contextmanager.services;
 
-import java.util.Arrays;
 import java.util.List;
 
 import javax.enterprise.context.RequestScoped;
@@ -11,6 +10,7 @@ import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
+import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.MediaType;
 
 import org.gcube.common.resources.gcore.Resource;
@@ -19,8 +19,9 @@ import org.gcube.smartgears.ApplicationManagerProvider;
 import org.gcube.smartgears.ContextProvider;
 import org.gcube.smartgears.annotations.ManagedBy;
 import org.gcube.smartgears.context.application.ApplicationContext;
-import org.gcube.vremanagement.contextmanager.ResourceManager;
 import org.gcube.vremanagement.contextmanager.ContextAppManager;
+import org.gcube.vremanagement.contextmanager.ResourceManager;
+import org.gcube.vremanagement.contextmanager.handlers.ContextContainer;
 import org.gcube.vremanagement.contextmanager.handlers.ContextHandler;
 import org.gcube.vremanagement.contextmanager.model.types.ContextList;
 import org.slf4j.Logger;
@@ -56,11 +57,21 @@ public class ContextService {
 	@PathParam("vo") 
 	String vo;
 	
+	@Inject
+	ContextContainer contextContainer;
+	
 	@GET
 	@Produces(MediaType.APPLICATION_JSON)
 	@Path("")
 	public ContextList getContexts() {
-		return new ContextList(Arrays.asList("/gcube","/gcube/devsec"));
+		log.info("get Context called");
+		try {
+			List<String> contexts = contextContainer.getAvailableContexts();
+			log.debug("found {}",contexts);
+			return new ContextList(contexts);
+		}catch (Exception e) {
+			throw new WebApplicationException(e);
+		}
 	}
 	
 	@PUT
diff --git a/src/test/java/org/gcube/vremanagement/contextmanager/ContextContainerTester.java b/src/test/java/org/gcube/vremanagement/contextmanager/ContextContainerTester.java
new file mode 100644
index 0000000..f7a9114
--- /dev/null
+++ b/src/test/java/org/gcube/vremanagement/contextmanager/ContextContainerTester.java
@@ -0,0 +1,38 @@
+package org.gcube.vremanagement.contextmanager;
+
+import java.util.List;
+
+import org.gcube.vremanagement.contextmanager.handlers.ContextContainer;
+import org.gcube.vremanagement.contextmanager.model.types.Context;
+import org.gcube.vremanagement.contextmanager.model.types.Context.Type;
+
+public class ContextContainerTester implements ContextContainer {
+
+	private ContextTree contextTree = new ContextTree() {
+		
+		@Override
+		public void init() {
+			TreeItem root = this.createItem(null, new Context("gcube", "gcube", Type.INFRASTRUCTURE));
+			TreeItem devsec = this.createItem(root.getContext().getId(), new Context("devsec", "devsec", Type.VO));
+			TreeItem devNext = this.createItem(root.getContext().getId(), new Context("devNext", "devNext", Type.VO));
+			this.createItem(devsec.getContext().getId(), new Context("devVRE", "devVRE", Type.VRE));
+			this.createItem(devNext.getContext().getId(), new Context("nextNext", "nextNext", Type.VRE));
+		}
+	};
+	
+	@Override
+	public List<String> getAvailableContexts() {
+		return contextTree.getContexts();
+	}
+
+	@Override
+	public boolean addContext(String parentId, Context toAdd) {
+		return contextTree.createItem(parentId, toAdd)!=null;
+	}
+
+	@Override
+	public boolean removeContext(String contextId) {
+		return contextTree.removeItem(contextId)!=null;
+	}
+
+}
diff --git a/src/test/java/org/gcube/vremanagement/contextmanager/ContextServiceIntegrationTest.java b/src/test/java/org/gcube/vremanagement/contextmanager/ContextServiceIntegrationTest.java
index 90a08e1..e4663bc 100644
--- a/src/test/java/org/gcube/vremanagement/contextmanager/ContextServiceIntegrationTest.java
+++ b/src/test/java/org/gcube/vremanagement/contextmanager/ContextServiceIntegrationTest.java
@@ -36,13 +36,12 @@ public class ContextServiceIntegrationTest extends JerseyTest {
     public void getContexts_whenCorrectRequest_thenResponseIsOk() {
         
     	
-    	Response response = target("/contexts").request()
-            .get();
+    	Response response = target("/contexts").request().get();
 
         assertEquals("Http Response should be 200: ", Status.OK.getStatusCode(), response.getStatus());
         assertEquals("Http Content-Type should be: ", MediaType.APPLICATION_JSON, response.getHeaderString(HttpHeaders.CONTENT_TYPE));
 
-        assertTrue(((ContextList)response.getEntity()).getContexts().size()>0);
+        assertTrue(response.readEntity(ContextList.class).getContexts().size()>0);
     }
     
 }
diff --git a/src/test/java/org/gcube/vremanagement/contextmanager/ContextTree.java b/src/test/java/org/gcube/vremanagement/contextmanager/ContextTree.java
new file mode 100644
index 0000000..245d0df
--- /dev/null
+++ b/src/test/java/org/gcube/vremanagement/contextmanager/ContextTree.java
@@ -0,0 +1,77 @@
+package org.gcube.vremanagement.contextmanager;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.gcube.vremanagement.contextmanager.model.types.Context;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public abstract class ContextTree {
+
+	private static Logger log = LoggerFactory.getLogger(ContextTree.class);
+	
+	public ContextTree() {
+		init();
+	}
+	
+	private static TreeItem root;
+	
+	private static Map<String, TreeItem> values = new HashMap<>();
+	
+	public abstract void init();
+	
+	public synchronized TreeItem removeItem(String itemId) {
+		TreeItem item = values.get(itemId);
+		if (item.isLeaf())
+			return values.remove(itemId);
+		throw new IllegalArgumentException("item is not a leaf");
+	}
+	
+	public synchronized TreeItem createItem(String parentId, Context context) {
+		TreeItem item;
+		if (parentId==null) {
+			if (root!=null) throw new IllegalArgumentException("root is already set");
+			item = new TreeItem(null, context);
+			root= item;
+		} else {
+			TreeItem parentItem = values.get(parentId);
+			if (context.getType().getPossibleParent()!=parentItem.getContext().getType())
+				throw new IllegalArgumentException("parent not valid");
+			item = new TreeItem(parentItem, context);
+			parentItem.addChild(item);
+		}
+		values.put(context.getId(), item);
+		return item;
+	}
+	
+	public Context getContext(String id) {
+		return values.get(id).getContext();
+	}
+	
+	public List<String> getContexts(){
+		log.debug("searching for contexts");
+		List<String> toReturn = new ArrayList<>();
+		String rootString =  "/"+root.getContext().getId();
+		toReturn.add(rootString);
+		if (!root.isLeaf())
+			toReturn.addAll(deepSearch(root.getChildren(), rootString));
+		log.debug("found {} contexts", toReturn.size());
+		return toReturn;
+	}
+	
+	private List<String> deepSearch(Set<TreeItem> children, String parentString) {
+		List<String> toReturn = new ArrayList<>();
+		for (TreeItem item : children) {
+			String itemString = String.format("%s/%s", parentString, item.getContext().getId());
+			toReturn.add(itemString);
+			if (!item.isLeaf()) 
+				toReturn.addAll(deepSearch(item.getChildren(), itemString));
+		}
+		return toReturn;
+	}
+
+}
diff --git a/src/test/java/org/gcube/vremanagement/contextmanager/TreeItem.java b/src/test/java/org/gcube/vremanagement/contextmanager/TreeItem.java
new file mode 100644
index 0000000..6bd78a4
--- /dev/null
+++ b/src/test/java/org/gcube/vremanagement/contextmanager/TreeItem.java
@@ -0,0 +1,70 @@
+package org.gcube.vremanagement.contextmanager;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.gcube.vremanagement.contextmanager.model.types.Context;
+
+public class TreeItem {
+
+	TreeItem parent;
+	Context context;
+	
+	private Set<TreeItem> children = new HashSet<>();
+	
+	public TreeItem(TreeItem parent, Context context) {
+		this.parent = parent;	
+		this.context = context;
+	}
+
+	public void addChild(TreeItem child) {
+		children.add(child);
+	}
+	
+	public void removeChild(TreeItem child) {
+		children.remove(child);
+	}
+	
+	public Set<TreeItem> getChildren() {
+		return Collections.unmodifiableSet(children);
+	}
+
+	public TreeItem getParent() {
+		return parent;
+	}
+	
+	public Context getContext() {
+		return context;
+	}
+	
+	public boolean isLeaf() {
+		return children.size()==0;
+	}
+
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((context == null) ? 0 : context.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj)
+			return true;
+		if (obj == null)
+			return false;
+		if (getClass() != obj.getClass())
+			return false;
+		TreeItem other = (TreeItem) obj;
+		if (context == null) {
+			if (other.context != null)
+				return false;
+		} else if (!context.equals(other.context))
+			return false;
+		return true;
+	}
+	
+}
diff --git a/src/test/resources/logback-test.xml b/src/test/resources/logback-test.xml
index c5fbacc..79dd5bf 100644
--- a/src/test/resources/logback-test.xml
+++ b/src/test/resources/logback-test.xml
@@ -1,12 +1,18 @@
 <configuration>
 
-	<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+	<appender name="STDOUT"
+		class="ch.qos.logback.core.ConsoleAppender">
 		<layout class="ch.qos.logback.classic.PatternLayout">
 			<Pattern>
-				%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} - %msg%n
+				%d{yyyy-MM-dd HH:mm:ss} [%thread] %-5level %logger{36} -  %msg%n
 			</Pattern>
 		</layout>
 	</appender>
 
-
+	<root level="ERROR">
+		<appender-ref ref="STDOUT" />
+	</root>
+	
+	<logger name="org.gcube.vremanagement" level="DEBUG"/>
+	
 </configuration>