diff --git a/api/src/main/java/ru/dragonestia/picker/api/repository/NodeRepository.java b/api/src/main/java/ru/dragonestia/picker/api/repository/NodeRepository.java
index f87366e..20e1424 100644
--- a/api/src/main/java/ru/dragonestia/picker/api/repository/NodeRepository.java
+++ b/api/src/main/java/ru/dragonestia/picker/api/repository/NodeRepository.java
@@ -11,7 +11,7 @@ import java.util.Set;
 
 public interface NodeRepository {
 
-    Set<NodeDetails> ALL_DETAILS = Set.of();
+    Set<NodeDetails> ALL_DETAILS = Set.of(NodeDetails.PERSIST);
 
     void register(RNode node, boolean persist) throws InvalidNodeIdentifierException, NodeAlreadyExistException;
 
diff --git a/api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java b/api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java
index 13fc34c..73a1c80 100644
--- a/api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java
+++ b/api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java
@@ -11,7 +11,7 @@ import java.util.Set;
 
 public interface RoomRepository {
 
-    Set<RoomDetails> ALL_DETAILS = Set.of(RoomDetails.COUNT_USERS);
+    Set<RoomDetails> ALL_DETAILS = Set.of(RoomDetails.COUNT_USERS, RoomDetails.PERSIST);
 
     void register(RRoom room, boolean persist) throws NodeNotFoundException, InvalidRoomIdentifierException, RoomAlreadyExistException;
 
diff --git a/api/src/main/java/ru/dragonestia/picker/api/repository/details/NodeDetails.java b/api/src/main/java/ru/dragonestia/picker/api/repository/details/NodeDetails.java
index 5e794ca..b374ec5 100644
--- a/api/src/main/java/ru/dragonestia/picker/api/repository/details/NodeDetails.java
+++ b/api/src/main/java/ru/dragonestia/picker/api/repository/details/NodeDetails.java
@@ -1,4 +1,5 @@
 package ru.dragonestia.picker.api.repository.details;
 
 public enum NodeDetails {
+    PERSIST
 }
diff --git a/api/src/main/java/ru/dragonestia/picker/api/repository/details/RoomDetails.java b/api/src/main/java/ru/dragonestia/picker/api/repository/details/RoomDetails.java
index a12f663..29e9ee1 100644
--- a/api/src/main/java/ru/dragonestia/picker/api/repository/details/RoomDetails.java
+++ b/api/src/main/java/ru/dragonestia/picker/api/repository/details/RoomDetails.java
@@ -1,5 +1,6 @@
 package ru.dragonestia.picker.api.repository.details;
 
 public enum RoomDetails {
-    COUNT_USERS
+    COUNT_USERS,
+    PERSIST
 }
diff --git a/api/src/main/java/ru/dragonestia/picker/api/repository/response/type/RNode.java b/api/src/main/java/ru/dragonestia/picker/api/repository/response/type/RNode.java
index bfc1812..303a6ec 100644
--- a/api/src/main/java/ru/dragonestia/picker/api/repository/response/type/RNode.java
+++ b/api/src/main/java/ru/dragonestia/picker/api/repository/response/type/RNode.java
@@ -39,7 +39,7 @@ public class RNode {
         details.put(detail, value);
     }
 
-    public String getDetails(NodeDetails detail, String value) {
+    public String getDetails(NodeDetails detail) {
         return details.get(detail);
     }
 
diff --git a/app/src/main/java/ru/dragonestia/picker/util/DetailsExtractor.java b/app/src/main/java/ru/dragonestia/picker/util/DetailsExtractor.java
index 7e720a8..44a4161 100644
--- a/app/src/main/java/ru/dragonestia/picker/util/DetailsExtractor.java
+++ b/app/src/main/java/ru/dragonestia/picker/util/DetailsExtractor.java
@@ -29,7 +29,10 @@ public class DetailsExtractor {
         var response = node.toResponseObject();
 
         for (var detail: details) {
-            // TODO...
+            if (detail == NodeDetails.PERSIST) {
+                response.putDetail(NodeDetails.PERSIST, Boolean.toString(node.persist()));
+                continue;
+            }
         }
 
         return response;
@@ -42,6 +45,12 @@ public class DetailsExtractor {
             if (detail == RoomDetails.COUNT_USERS) {
                 var users = Integer.toString(userRepository.usersOf(room).size());
                 response.details().put(RoomDetails.COUNT_USERS, users);
+                continue;
+            }
+
+            if (detail == RoomDetails.PERSIST) {
+                response.details().put(RoomDetails.PERSIST, Boolean.toString(room.isPersist()));
+                continue;
             }
         }