diff --git a/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextImporter.java b/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextImporter.java
index 0ce7b3ac..ac6b5957 100644
--- a/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextImporter.java
+++ b/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextImporter.java
@@ -18,8 +18,8 @@ import eu.dnetlib.is.context.model.ConceptLevel0;
 import eu.dnetlib.is.context.model.ConceptLevel1;
 import eu.dnetlib.is.context.model.ConceptLevel2;
 import eu.dnetlib.is.context.model.Context;
+import eu.dnetlib.is.context.model.CtxChildInfo;
 import eu.dnetlib.is.context.model.CtxInfo;
-import eu.dnetlib.is.context.model.CtxInfoWithClaim;
 import eu.dnetlib.is.context.model.Parameter;
 import eu.dnetlib.is.context.model.repository.CategoryRepository;
 import eu.dnetlib.is.context.model.repository.ConceptLevel0Repository;
@@ -101,9 +101,9 @@ public class ContextImporter {
 	private void setCommonInfo(final CtxInfo o, final String parent, final Node n) {
 		o.setId(n.valueOf("@id"));
 		o.setLabel(n.valueOf("@label"));
-		if (o instanceof CtxInfoWithClaim) {
-			((CtxInfoWithClaim) o).setParent(parent);
-			((CtxInfoWithClaim) o).setClaim(BooleanUtils.toBoolean(n.valueOf("@claim")));
+		if (o instanceof CtxChildInfo) {
+			((CtxChildInfo) o).setParent(parent);
+			((CtxChildInfo) o).setClaim(BooleanUtils.toBoolean(n.valueOf("@claim")));
 		}
 		o.setParameters(n.selectNodes("./param")
 			.stream()
diff --git a/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextRestController.java b/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextRestController.java
index 3fc3ab01..512a194b 100644
--- a/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextRestController.java
+++ b/apps/dnet-is-application/src/main/java/eu/dnetlib/is/context/ContextRestController.java
@@ -22,6 +22,7 @@ import org.springframework.web.bind.annotation.RestController;
 
 import eu.dnetlib.is.context.model.Category;
 import eu.dnetlib.is.context.model.Context;
+import eu.dnetlib.is.context.model.CtxChildInfo;
 import eu.dnetlib.is.context.model.repository.CategoryRepository;
 import eu.dnetlib.is.context.model.repository.ConceptLevel0Repository;
 import eu.dnetlib.is.context.model.repository.ConceptLevel1Repository;
@@ -61,9 +62,23 @@ public class ContextRestController {
 		return contextRepository.getById(ctxId);
 	}
 
-	@GetMapping("/{ctxId}/categories")
-	public Iterable<Category> listCategories(@PathVariable final String ctxId) {
-		return categoryRepository.findByParentOrderById(ctxId);
+	@GetMapping("/{parent}/categories")
+	public Iterable<Category> listCategories(@PathVariable final String parent) {
+		return categoryRepository.findByParentOrderById(parent);
+	}
+
+	@GetMapping("/{level}/{parent}/concepts")
+	public Iterable<? extends CtxChildInfo> listCategories(@PathVariable final int level, @PathVariable final String parent) {
+		switch (level) {
+		case 0:
+			return conceptLevel0Repository.findByParentOrderById(parent);
+		case 1:
+			return conceptLevel1Repository.findByParentOrderById(parent);
+		case 2:
+			return conceptLevel2Repository.findByParentOrderById(parent);
+		default:
+			throw new RuntimeException("Invalid concept level - valid levels are 0, 1, 2");
+		}
 	}
 
 	@PostMapping(value = "/load", consumes = "text/plain")
diff --git a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/Category.java b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/Category.java
index 4d2792c4..5befdd89 100644
--- a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/Category.java
+++ b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/Category.java
@@ -5,7 +5,7 @@ import javax.persistence.Table;
 
 @Entity
 @Table(name = "context_categories")
-public class Category extends CtxInfoWithClaim {
+public class Category extends CtxChildInfo {
 
 	private static final long serialVersionUID = -1847175903793410585L;
 
diff --git a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel0.java b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel0.java
index 7894a7ab..646f7b8a 100644
--- a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel0.java
+++ b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel0.java
@@ -5,7 +5,7 @@ import javax.persistence.Table;
 
 @Entity
 @Table(name = "context_cat_concepts_lvl_0")
-public class ConceptLevel0 extends CtxInfoWithClaim {
+public class ConceptLevel0 extends CtxChildInfo {
 
 	private static final long serialVersionUID = -4775331902088912839L;
 
diff --git a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel1.java b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel1.java
index cea55bdc..e6fce6fa 100644
--- a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel1.java
+++ b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel1.java
@@ -5,7 +5,7 @@ import javax.persistence.Table;
 
 @Entity
 @Table(name = "context_cat_concepts_lvl_1")
-public class ConceptLevel1 extends CtxInfoWithClaim {
+public class ConceptLevel1 extends CtxChildInfo {
 
 	private static final long serialVersionUID = -759398689766245784L;
 
diff --git a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel2.java b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel2.java
index 92a04000..2b055254 100644
--- a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel2.java
+++ b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/ConceptLevel2.java
@@ -5,7 +5,7 @@ import javax.persistence.Table;
 
 @Entity
 @Table(name = "context_cat_concepts_lvl_2")
-public class ConceptLevel2 extends CtxInfoWithClaim {
+public class ConceptLevel2 extends CtxChildInfo {
 
 	private static final long serialVersionUID = 906131339592862096L;
 
diff --git a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/CtxInfoWithClaim.java b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/CtxChildInfo.java
similarity index 90%
rename from libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/CtxInfoWithClaim.java
rename to libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/CtxChildInfo.java
index a763a116..f29df70b 100644
--- a/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/CtxInfoWithClaim.java
+++ b/libs/dnet-is-common/src/main/java/eu/dnetlib/is/context/model/CtxChildInfo.java
@@ -4,7 +4,7 @@ import javax.persistence.Column;
 import javax.persistence.MappedSuperclass;
 
 @MappedSuperclass
-public abstract class CtxInfoWithClaim extends CtxInfo {
+public abstract class CtxChildInfo extends CtxInfo {
 
 	private static final long serialVersionUID = -9005145235908917048L;