diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientFactory.java b/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientFactory.java
index b1dceaa..e51267e 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientFactory.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientFactory.java
@@ -24,14 +24,33 @@ public class ResourceRegistryClientFactory {
 	
 	protected static boolean HIERARCHICAL_MODE;
 
-	public static boolean isHierarchicalMode() {
+	protected static boolean isHierarchicalMode() {
 		return ResourceRegistryClientFactory.HIERARCHICAL_MODE;
 	}
 
+	/**
+	 * The affected methods are {@link ResourceRegistryClient} instances safe methods i.e. read* and exists*
+	 * @param hierarchicalMode
+	 */
 	public static void setHierarchicalMode(boolean hierarchicalMode) {
 		ResourceRegistryClientFactory.HIERARCHICAL_MODE = hierarchicalMode;
 	}
 	
+	protected static boolean INCLUDE_CONTEXTS_IN_INSTANCES_HEADER;
+
+	protected static boolean includeContextsInInstanceHeader() {
+		return ResourceRegistryClientFactory.INCLUDE_CONTEXTS_IN_INSTANCES_HEADER;
+	}
+
+	/**
+	 * The affected methods are {@link ResourceRegistryClient} instances safe methods i.e. read* and exists*
+	 * @param hierarchicalMode
+	 */
+	public static void includeContextsInInstanceHeader(boolean includeContextsInInstancesHeader) {
+		ResourceRegistryClientFactory.INCLUDE_CONTEXTS_IN_INSTANCES_HEADER = includeContextsInInstancesHeader;
+	}
+	
+	
 	protected static List<String> addresses;
 	
 	static {
diff --git a/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientImpl.java b/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientImpl.java
index fc25e0b..54f5156 100644
--- a/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientImpl.java
+++ b/src/main/java/org/gcube/informationsystem/resourceregistry/client/ResourceRegistryClientImpl.java
@@ -44,20 +44,36 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 	
 	protected final String address;
 	
-	private void checkHierarchicalMode(GXHTTPStringRequest gxHTTPStringRequest) throws UnsupportedEncodingException{
-		checkHierarchicalMode(gxHTTPStringRequest, null);
+	private GXHTTPStringRequest includeAdditionalQueryParameters(GXHTTPStringRequest gxHTTPStringRequest) throws UnsupportedEncodingException{
+		return includeAdditionalQueryParameters(gxHTTPStringRequest, null);
 	}
 	
-	private void checkHierarchicalMode(GXHTTPStringRequest gxHTTPStringRequest, Map<String,String> queryParams) throws UnsupportedEncodingException{
+	private GXHTTPStringRequest includeAdditionalQueryParameters(GXHTTPStringRequest gxHTTPStringRequest, Map<String,String> queryParams) throws UnsupportedEncodingException{
+		gxHTTPStringRequest = checkHierarchicalMode(gxHTTPStringRequest, queryParams);
+		return checkIncludeContextsInInstanceHeader(gxHTTPStringRequest, queryParams);
+	}
+	
+	private GXHTTPStringRequest checkHierarchicalMode(GXHTTPStringRequest gxHTTPStringRequest, Map<String,String> queryParams) throws UnsupportedEncodingException{
 		if(ResourceRegistryClientFactory.isHierarchicalMode()) {
 			if(queryParams==null) {
 				queryParams = new HashMap<>();
 			}
 			queryParams.put(AccessPath.HIERARCHICAL_MODE_PARAM, Boolean.toString(true));
 		}
-		gxHTTPStringRequest.queryParams(queryParams);
+		return gxHTTPStringRequest.queryParams(queryParams);
 	}
 	
+	private GXHTTPStringRequest checkIncludeContextsInInstanceHeader(GXHTTPStringRequest gxHTTPStringRequest, Map<String,String> queryParams) throws UnsupportedEncodingException{
+		if(ResourceRegistryClientFactory.includeContextsInInstanceHeader()) {
+			if(queryParams==null) {
+				queryParams = new HashMap<>();
+			}
+			queryParams.put(AccessPath.INCLUDE_CONTEXTS_IN_HEADER_PARAM, Boolean.toString(true));
+		}
+		return gxHTTPStringRequest.queryParams(queryParams);
+	}
+	
+	
 	protected ContextCacheRenewal contextCacheRenewal = new ContextCacheRenewal() {
 		
 		@Override
@@ -218,7 +234,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 			gxHTTPStringRequest.path(type);
 			gxHTTPStringRequest.path(uuid.toString());
 			
-			checkHierarchicalMode(gxHTTPStringRequest);
+			includeAdditionalQueryParameters(gxHTTPStringRequest);
 			
 			HttpURLConnection httpURLConnection = gxHTTPStringRequest.head();
 			HTTPUtility.getResponse(String.class, httpURLConnection);
@@ -260,7 +276,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 			gxHTTPStringRequest.path(type);
 			gxHTTPStringRequest.path(uuid.toString());
 			
-			checkHierarchicalMode(gxHTTPStringRequest);
+			includeAdditionalQueryParameters(gxHTTPStringRequest);
 			
 			HttpURLConnection httpURLConnection = gxHTTPStringRequest.get();
 			String ret = HTTPUtility.getResponse(String.class, httpURLConnection);
@@ -302,7 +318,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 			
 			Map<String,String> parameters = new HashMap<>();
 			parameters.put(AccessPath.POLYMORPHIC_PARAM, polymorphic.toString());
-			checkHierarchicalMode(gxHTTPStringRequest, parameters);
+			includeAdditionalQueryParameters(gxHTTPStringRequest, parameters);
 			
 			HttpURLConnection httpURLConnection = gxHTTPStringRequest.get();
 			
@@ -349,7 +365,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 				parameters.put(AccessPath.FETCH_PLAN_PARAM, fetchPlan);
 			}
 			
-			checkHierarchicalMode(gxHTTPStringRequest, parameters);
+			includeAdditionalQueryParameters(gxHTTPStringRequest, parameters);
 			
 			HttpURLConnection httpURLConnection = gxHTTPStringRequest.get();
 
@@ -399,7 +415,7 @@ public class ResourceRegistryClientImpl implements ResourceRegistryClient {
 				parameters.put(AccessPath.REFERENCE_PARAM, referenceEntity.toString());
 			}
 			
-			checkHierarchicalMode(gxHTTPStringRequest, parameters);
+			includeAdditionalQueryParameters(gxHTTPStringRequest, parameters);
 			
 			HttpURLConnection httpURLConnection = gxHTTPStringRequest.get();