diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/IRoom.java b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/IRoom.java
index e8cea80..3502dc8 100644
--- a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/IRoom.java
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/IRoom.java
@@ -2,6 +2,9 @@ package ru.dragonestia.picker.api.model.room;
 
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import ru.dragonestia.picker.api.repository.type.NodeIdentifier;
+import ru.dragonestia.picker.api.repository.type.RoomIdentifier;
+import ru.dragonestia.picker.api.repository.type.RoomPath;
 
 public interface IRoom {
 
@@ -11,6 +14,10 @@ public interface IRoom {
 
     @NotNull String getNodeIdentifier();
 
+    default @NotNull RoomPath getPath() {
+        return new RoomPath(NodeIdentifier.of(getNodeIdentifier()), RoomIdentifier.of(getIdentifier()));
+    }
+
     int getMaxSlots();
 
     default boolean hasUnlimitedSlots() {
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ResponseRoom.java b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ResponseRoom.java
index 0ad0295..c18beec 100644
--- a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ResponseRoom.java
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ResponseRoom.java
@@ -3,6 +3,7 @@ package ru.dragonestia.picker.api.model.room;
 import io.swagger.v3.oas.annotations.media.Schema;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import ru.dragonestia.picker.api.repository.type.RoomPath;
 
 import java.beans.Transient;
 import java.util.HashMap;
@@ -50,6 +51,12 @@ public class ResponseRoom implements IRoom {
         return nodeId;
     }
 
+    @Transient
+    @Override
+    public @NotNull RoomPath getPath() {
+        return IRoom.super.getPath();
+    }
+
     @Override
     public int getMaxSlots() {
         return slots;
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/RoomDefinition.java b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/RoomDefinition.java
new file mode 100644
index 0000000..320026b
--- /dev/null
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/RoomDefinition.java
@@ -0,0 +1,87 @@
+package ru.dragonestia.picker.api.model.room;
+
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+import ru.dragonestia.picker.api.repository.type.NodeIdentifier;
+import ru.dragonestia.picker.api.repository.type.RoomIdentifier;
+
+import java.security.InvalidParameterException;
+
+public class RoomDefinition implements IRoom {
+
+    private final String id;
+    private final String nodeId;
+    private int slots = 5;
+    private boolean locked = false;
+    private boolean persist = false;
+    private String payload = "";
+
+    public RoomDefinition(@NotNull NodeIdentifier nodeIdentifier, @NotNull RoomIdentifier roomIdentifier) {
+        nodeId = nodeIdentifier.getValue();
+        id = roomIdentifier.getValue();
+    }
+
+    @Override
+    public @NotNull String getIdentifier() {
+        return id;
+    }
+
+    @Override
+    public @NotNull String getNodeIdentifier() {
+        return nodeId;
+    }
+
+    @Override
+    public int getMaxSlots() {
+        return slots;
+    }
+
+    @Contract("_ -> this")
+    public @NotNull RoomDefinition setMaxSlots(int value) {
+        if (value == 0 || value < -1) {
+            throw new InvalidParameterException("Slots cannot be negative");
+        }
+
+        slots = value;
+        return this;
+    }
+
+    @Override
+    public boolean isLocked() {
+        return locked;
+    }
+
+    @Contract("_ -> this")
+    public @NotNull RoomDefinition setLocked(boolean value) {
+        locked = value;
+        return this;
+    }
+
+    @Override
+    public @Nullable Boolean isPersist() {
+        return persist;
+    }
+
+    @Contract("_ -> this")
+    public @NotNull RoomDefinition setPersist(boolean value) {
+        persist = value;
+        return this;
+    }
+
+    @Override
+    public @Nullable String getPayload() {
+        return payload;
+    }
+
+    @Contract("_ -> this")
+    public @NotNull RoomDefinition setPayload(@NotNull String value) {
+        payload = value;
+        return this;
+    }
+
+    @Override
+    public @Nullable String getDetail(@NotNull RoomDetails detail) {
+        throw new UnsupportedOperationException();
+    }
+}
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ShortResponseRoom.java b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ShortResponseRoom.java
index 375f7c1..202c66c 100644
--- a/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ShortResponseRoom.java
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/model/room/ShortResponseRoom.java
@@ -3,6 +3,7 @@ package ru.dragonestia.picker.api.model.room;
 import io.swagger.v3.oas.annotations.media.Schema;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
+import ru.dragonestia.picker.api.repository.type.RoomPath;
 
 import java.beans.Transient;
 import java.util.HashMap;
@@ -46,6 +47,12 @@ public class ShortResponseRoom implements IRoom {
         return nodeId;
     }
 
+    @Transient
+    @Override
+    public @NotNull RoomPath getPath() {
+        return IRoom.super.getPath();
+    }
+
     @Override
     public int getMaxSlots() {
         return slots;
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java b/client-api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java
index ad77cc0..0b7490f 100644
--- a/client-api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/repository/RoomRepository.java
@@ -1,32 +1,26 @@
 package ru.dragonestia.picker.api.repository;
 
-import ru.dragonestia.picker.api.exception.*;
-import ru.dragonestia.picker.api.model.node.ResponseNode;
+import org.jetbrains.annotations.NotNull;
 import ru.dragonestia.picker.api.model.room.ResponseRoom;
-import ru.dragonestia.picker.api.model.room.RoomDetails;
+import ru.dragonestia.picker.api.model.room.RoomDefinition;
 import ru.dragonestia.picker.api.model.room.ShortResponseRoom;
+import ru.dragonestia.picker.api.repository.request.room.FindRoomById;
+import ru.dragonestia.picker.api.repository.request.room.GetAllRooms;
+import ru.dragonestia.picker.api.repository.request.room.RemoveRoomsByIds;
+import ru.dragonestia.picker.api.repository.type.RoomPath;
 
 import java.util.List;
 import java.util.Optional;
-import java.util.Set;
 
 public interface RoomRepository {
 
-    Set<RoomDetails> ALL_DETAILS = Set.of(RoomDetails.COUNT_USERS, RoomDetails.PERSIST);
+    void saveRoom(@NotNull RoomDefinition definition);
 
-    void register(ResponseRoom room, boolean persist) throws NodeNotFoundException, InvalidRoomIdentifierException, RoomAlreadyExistException;
+    void removeRooms(@NotNull RemoveRoomsByIds request);
 
-    void remove(ResponseRoom room) throws NodeNotFoundException;
+    @NotNull List<ShortResponseRoom> allRooms(@NotNull GetAllRooms request);
 
-    void remove(ResponseNode node, ShortResponseRoom room) throws NodeNotFoundException;
+    @NotNull Optional<ResponseRoom> find(@NotNull FindRoomById request);
 
-    default List<ShortResponseRoom> all(ResponseNode node) throws NodeNotFoundException {
-        return all(node, Set.of());
-    }
-
-    List<ShortResponseRoom> all(ResponseNode node, Set<RoomDetails> details) throws NodeNotFoundException;
-
-    Optional<ResponseRoom> find(ResponseNode node, String roomId) throws NodeNotFoundException;
-
-    void lock(ResponseRoom room, boolean value) throws NodeNotFoundException, RoomNotFoundException;
+    void lockRoom(@NotNull RoomPath path, boolean value);
 }
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/FindRoomById.java b/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/FindRoomById.java
new file mode 100644
index 0000000..23ab37f
--- /dev/null
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/FindRoomById.java
@@ -0,0 +1,103 @@
+package ru.dragonestia.picker.api.repository.request.room;
+
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import ru.dragonestia.picker.api.model.room.RoomDetails;
+import ru.dragonestia.picker.api.repository.type.NodeIdentifier;
+import ru.dragonestia.picker.api.repository.type.RoomIdentifier;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class FindRoomById {
+
+    private final String nodeId;
+    private final String id;
+    private final Set<RoomDetails> details;
+
+    private FindRoomById(String nodeId, String id, Set<RoomDetails> details) {
+        this.id = id;
+        this.nodeId = nodeId;
+        this.details = details;
+    }
+
+    public @NotNull String getNodeId() {
+        return nodeId;
+    }
+
+    public @NotNull String getId() {
+        return id;
+    }
+
+    public @NotNull Set<RoomDetails> getDetails() {
+        return details;
+    }
+
+    @Contract("_, _ -> new")
+    public static @NotNull FindRoomById just(@NotNull NodeIdentifier nodeId, @NotNull RoomIdentifier roomId) {
+        return FindRoomById.builder()
+                .setNodeId(nodeId)
+                .setRoomId(roomId)
+                .build();
+    }
+
+    @Contract("_, _ -> new")
+    public static @NotNull FindRoomById withAllDetails(@NotNull NodeIdentifier nodeId, @NotNull RoomIdentifier roomId) {
+        return FindRoomById.builder()
+                .setNodeId(nodeId)
+                .setRoomId(roomId)
+                .setDetails(Arrays.stream(RoomDetails.values()).collect(Collectors.toSet()))
+                .build();
+    }
+
+    public static @NotNull Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private String nodeId = null;
+        private String roomId = null;
+        private Set<RoomDetails> details = new HashSet<>();
+
+        private Builder() {}
+
+        @Contract("_ -> this")
+        public @NotNull Builder setNodeId(@NotNull NodeIdentifier identifier) {
+            nodeId = identifier.getValue();
+            return this;
+        }
+
+        @Contract("_ -> this")
+        public @NotNull Builder setRoomId(@NotNull RoomIdentifier identifier) {
+            roomId = identifier.getValue();
+            return this;
+        }
+
+        @Contract("_ -> this")
+        public @NotNull Builder setDetails(@NotNull Set<RoomDetails> details) {
+            this.details = details;
+            return this;
+        }
+
+        @Contract("_ -> this")
+        public @NotNull Builder appendDetail(@NotNull RoomDetails detail) {
+            details.add(detail);
+            return this;
+        }
+
+        public @NotNull FindRoomById build() {
+            if (nodeId == null) {
+                throw new NullPointerException("Node id is null");
+            }
+            if (roomId == null) {
+                throw new NullPointerException("Room id is null");
+            }
+
+            return new FindRoomById(nodeId, roomId, Collections.unmodifiableSet(details));
+        }
+    }
+}
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/GetAllRooms.java b/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/GetAllRooms.java
new file mode 100644
index 0000000..af4497f
--- /dev/null
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/GetAllRooms.java
@@ -0,0 +1,82 @@
+package ru.dragonestia.picker.api.repository.request.room;
+
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import ru.dragonestia.picker.api.model.room.RoomDetails;
+import ru.dragonestia.picker.api.repository.type.NodeIdentifier;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+import java.util.stream.Collectors;
+
+public class GetAllRooms {
+
+    private final String nodeId;
+    private final Set<RoomDetails> details;
+
+    private GetAllRooms(String nodeId, Set<RoomDetails> details) {
+        this.nodeId = nodeId;
+        this.details = details;
+    }
+
+    public @NotNull String getNodeId() {
+        return nodeId;
+    }
+
+    public @NotNull Set<RoomDetails> getDetails() {
+        return details;
+    }
+
+    @Contract("_ -> new")
+    public static @NotNull GetAllRooms just(@NotNull NodeIdentifier nodeIdentifier) {
+        return GetAllRooms.builder().setNodeId(nodeIdentifier).build();
+    }
+
+    @Contract("_ -> new")
+    public static @NotNull GetAllRooms withAllDetails(@NotNull NodeIdentifier nodeIdentifier) {
+        return GetAllRooms.builder()
+                .setNodeId(nodeIdentifier)
+                .setDetails(Arrays.stream(RoomDetails.values()).collect(Collectors.toSet()))
+                .build();
+    }
+
+    public static @NotNull Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private String nodeId = null;
+        private Set<RoomDetails> details = new HashSet<>();
+
+        private Builder() {}
+
+        @Contract("_ -> this")
+        public @NotNull Builder setNodeId(@NotNull NodeIdentifier identifier) {
+            nodeId = identifier.getValue();
+            return this;
+        }
+
+        @Contract("_ -> this")
+        public @NotNull Builder setDetails(@NotNull Set<RoomDetails> details) {
+            this.details = details;
+            return this;
+        }
+
+        @Contract("_ -> this")
+        public @NotNull Builder appendDetail(@NotNull RoomDetails detail) {
+            details.add(detail);
+            return this;
+        }
+
+        public @NotNull GetAllRooms build() {
+            if (nodeId == null) {
+                throw new NullPointerException("Node id is null");
+            }
+
+            return new GetAllRooms(nodeId, Collections.unmodifiableSet(details));
+        }
+    }
+}
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/RemoveRoomsByIds.java b/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/RemoveRoomsByIds.java
new file mode 100644
index 0000000..7b23a2e
--- /dev/null
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/repository/request/room/RemoveRoomsByIds.java
@@ -0,0 +1,53 @@
+package ru.dragonestia.picker.api.repository.request.room;
+
+import org.jetbrains.annotations.Contract;
+import org.jetbrains.annotations.NotNull;
+import ru.dragonestia.picker.api.repository.type.RoomPath;
+
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+public class RemoveRoomsByIds {
+
+    private final Set<RoomPath> paths;
+
+    private RemoveRoomsByIds(Set<RoomPath> paths) {
+        this.paths = paths;
+    }
+
+    public @NotNull Set<RoomPath> getPaths() {
+        return paths;
+    }
+
+    public static @NotNull RemoveRoomsByIds just(@NotNull RoomPath path) {
+        return RemoveRoomsByIds.builder().appendPath(path).build();
+    }
+
+    public static @NotNull Builder builder() {
+        return new Builder();
+    }
+
+    public static class Builder {
+
+        private Set<RoomPath> paths = new HashSet<>();
+
+        private Builder() {}
+
+        @Contract("_ -> this")
+        public @NotNull Builder setPaths(@NotNull Set<RoomPath> paths) {
+            this.paths = paths;
+            return this;
+        }
+
+        @Contract("_ -> this")
+        public @NotNull Builder appendPath(@NotNull RoomPath path) {
+            paths.add(path);
+            return this;
+        }
+
+        public @NotNull RemoveRoomsByIds build() {
+            return new RemoveRoomsByIds(Collections.unmodifiableSet(paths));
+        }
+    }
+}
diff --git a/client-api/src/main/java/ru/dragonestia/picker/api/repository/type/RoomPath.java b/client-api/src/main/java/ru/dragonestia/picker/api/repository/type/RoomPath.java
new file mode 100644
index 0000000..a9a64d1
--- /dev/null
+++ b/client-api/src/main/java/ru/dragonestia/picker/api/repository/type/RoomPath.java
@@ -0,0 +1,34 @@
+package ru.dragonestia.picker.api.repository.type;
+
+import org.jetbrains.annotations.NotNull;
+
+public record RoomPath(@NotNull NodeIdentifier nodeIdentifier, @NotNull RoomIdentifier roomIdentifier) {
+
+    public @NotNull String getNodeId() {
+        return nodeIdentifier.getValue();
+    }
+
+    public @NotNull String getRoomId() {
+        return roomIdentifier.getValue();
+    }
+
+    @Override
+    public String toString() {
+        return nodeIdentifier.getValue() + "/" + roomIdentifier.getValue();
+    }
+
+    @Override
+    public int hashCode() {
+        return toString().hashCode();
+    }
+
+    @Override
+    public boolean equals(Object object) {
+        if (object == this) return true;
+        if (object == null) return false;
+        if (object instanceof RoomPath other) {
+            return toString().equals(other.toString());
+        }
+        return false;
+    }
+}