diff --git a/pkg/services/tree/service.go b/pkg/services/tree/service.go
index 374e80ae5..4506095ee 100644
--- a/pkg/services/tree/service.go
+++ b/pkg/services/tree/service.go
@@ -308,12 +308,13 @@ func (s *Service) GetNodeByPath(ctx context.Context, req *GetNodeByPathRequest)
 
 	info := make([]*GetNodeByPathResponse_Info, 0, len(nodes))
 	for _, node := range nodes {
-		m, _, err := s.forest.TreeGetMeta(cid, b.GetTreeId(), node)
+		m, parent, err := s.forest.TreeGetMeta(cid, b.GetTreeId(), node)
 		if err != nil {
 			return nil, err
 		}
 
 		var x GetNodeByPathResponse_Info
+		x.ParentId = parent
 		x.NodeId = node
 		x.Timestamp = m.Time
 		if b.AllAttributes {
diff --git a/pkg/services/tree/service.pb.go b/pkg/services/tree/service.pb.go
index a278e5827..1f4a74c6f 100644
--- a/pkg/services/tree/service.pb.go
+++ b/pkg/services/tree/service.pb.go
@@ -1,7 +1,10 @@
+//*
+// Service for working with CRDT tree.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.26.0
-// 	protoc        v3.21.1
+// 	protoc        v3.21.4
 // source: pkg/services/tree/service.proto
 
 package tree
@@ -25,8 +28,10 @@ type AddRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *AddRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature       `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *AddRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *AddRequest) Reset() {
@@ -80,8 +85,10 @@ type AddResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *AddResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature        `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *AddResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *AddResponse) Reset() {
@@ -135,8 +142,10 @@ type AddByPathRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *AddByPathRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature             `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *AddByPathRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *AddByPathRequest) Reset() {
@@ -190,8 +199,10 @@ type AddByPathResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *AddByPathResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature              `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *AddByPathResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *AddByPathResponse) Reset() {
@@ -245,8 +256,10 @@ type RemoveRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *RemoveRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature          `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *RemoveRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *RemoveRequest) Reset() {
@@ -300,8 +313,10 @@ type RemoveResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *RemoveResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature           `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *RemoveResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *RemoveResponse) Reset() {
@@ -355,8 +370,10 @@ type MoveRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *MoveRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature        `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *MoveRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *MoveRequest) Reset() {
@@ -410,8 +427,10 @@ type MoveResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *MoveResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature         `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *MoveResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *MoveResponse) Reset() {
@@ -465,8 +484,10 @@ type GetNodeByPathRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *GetNodeByPathRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature                 `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *GetNodeByPathRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *GetNodeByPathRequest) Reset() {
@@ -520,8 +541,10 @@ type GetNodeByPathResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *GetNodeByPathResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature                  `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *GetNodeByPathResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *GetNodeByPathResponse) Reset() {
@@ -575,8 +598,10 @@ type GetSubTreeRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *GetSubTreeRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature              `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *GetSubTreeRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *GetSubTreeRequest) Reset() {
@@ -630,8 +655,10 @@ type GetSubTreeResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *GetSubTreeResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature               `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *GetSubTreeResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *GetSubTreeResponse) Reset() {
@@ -685,8 +712,10 @@ type ApplyRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *ApplyRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature         `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *ApplyRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *ApplyRequest) Reset() {
@@ -740,8 +769,10 @@ type ApplyResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *ApplyResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature          `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *ApplyResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *ApplyResponse) Reset() {
@@ -795,8 +826,10 @@ type GetOpLogRequest struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *GetOpLogRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature            `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Request body.
+	Body *GetOpLogRequest_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Request signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *GetOpLogRequest) Reset() {
@@ -850,8 +883,10 @@ type GetOpLogResponse struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Body      *GetOpLogResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
-	Signature *Signature             `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
+	// Response body.
+	Body *GetOpLogResponse_Body `protobuf:"bytes,1,opt,name=body,proto3" json:"body,omitempty"`
+	// Response signature.
+	Signature *Signature `protobuf:"bytes,2,opt,name=signature,proto3" json:"signature,omitempty"`
 }
 
 func (x *GetOpLogResponse) Reset() {
@@ -905,11 +940,16 @@ type AddRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	ContainerId []byte      `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId      string      `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	ParentId    uint64      `protobuf:"varint,3,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
-	Meta        []*KeyValue `protobuf:"bytes,4,rep,name=meta,proto3" json:"meta,omitempty"`
-	BearerToken []byte      `protobuf:"bytes,5,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
+	// Container ID in V2 format.
+	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// ID of the parent to attach node to.
+	ParentId uint64 `protobuf:"varint,3,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
+	// Key-Value pairs with meta information.
+	Meta []*KeyValue `protobuf:"bytes,4,rep,name=meta,proto3" json:"meta,omitempty"`
+	// Bearer token in V2 format.
+	BearerToken []byte `protobuf:"bytes,5,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
 }
 
 func (x *AddRequest_Body) Reset() {
@@ -984,6 +1024,7 @@ type AddResponse_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// ID of the created node.
 	NodeId uint64 `protobuf:"varint,1,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
 }
 
@@ -1031,12 +1072,18 @@ type AddByPathRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	ContainerId   []byte      `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId        string      `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	PathAttribute string      `protobuf:"bytes,3,opt,name=path_attribute,json=pathAttribute,proto3" json:"path_attribute,omitempty"`
-	Path          []string    `protobuf:"bytes,4,rep,name=path,proto3" json:"path,omitempty"`
-	Meta          []*KeyValue `protobuf:"bytes,5,rep,name=meta,proto3" json:"meta,omitempty"`
-	BearerToken   []byte      `protobuf:"bytes,6,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
+	// Container ID in V2 format.
+	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// Attribute to build path with. Default: "FileName".
+	PathAttribute string `protobuf:"bytes,3,opt,name=path_attribute,json=pathAttribute,proto3" json:"path_attribute,omitempty"`
+	// List of path components.
+	Path []string `protobuf:"bytes,4,rep,name=path,proto3" json:"path,omitempty"`
+	// Node meta-information.
+	Meta []*KeyValue `protobuf:"bytes,5,rep,name=meta,proto3" json:"meta,omitempty"`
+	// Bearer token in V2 format.
+	BearerToken []byte `protobuf:"bytes,6,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
 }
 
 func (x *AddByPathRequest_Body) Reset() {
@@ -1118,8 +1165,10 @@ type AddByPathResponse_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Nodes    []uint64 `protobuf:"varint,1,rep,packed,name=nodes,proto3" json:"nodes,omitempty"`
-	ParentId uint64   `protobuf:"varint,2,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
+	// List of all created nodes. The first one is the leaf.
+	Nodes []uint64 `protobuf:"varint,1,rep,packed,name=nodes,proto3" json:"nodes,omitempty"`
+	// ID of the parent node where new nodes were attached.
+	ParentId uint64 `protobuf:"varint,2,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
 }
 
 func (x *AddByPathResponse_Body) Reset() {
@@ -1173,9 +1222,13 @@ type RemoveRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Container ID in V2 format.
 	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId      string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	NodeId      uint64 `protobuf:"varint,3,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// ID of the node to remove.
+	NodeId uint64 `protobuf:"varint,3,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
+	// Bearer token in V2 format.
 	BearerToken []byte `protobuf:"bytes,4,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
 }
 
@@ -1283,12 +1336,18 @@ type MoveRequest_Body struct {
 	unknownFields protoimpl.UnknownFields
 
 	// TODO import neo.fs.v2.refs.ContainerID directly.
-	ContainerId []byte      `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId      string      `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	ParentId    uint64      `protobuf:"varint,3,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
-	NodeId      uint64      `protobuf:"varint,4,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
-	Meta        []*KeyValue `protobuf:"bytes,5,rep,name=meta,proto3" json:"meta,omitempty"`
-	BearerToken []byte      `protobuf:"bytes,6,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
+	// Container ID in V2 format.
+	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// ID of the new parent.
+	ParentId uint64 `protobuf:"varint,3,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
+	// ID of the node to move.
+	NodeId uint64 `protobuf:"varint,4,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
+	// Node meta-information.
+	Meta []*KeyValue `protobuf:"bytes,5,rep,name=meta,proto3" json:"meta,omitempty"`
+	// Bearer token in V2 format.
+	BearerToken []byte `protobuf:"bytes,6,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
 }
 
 func (x *MoveRequest_Body) Reset() {
@@ -1408,14 +1467,22 @@ type GetNodeByPathRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	ContainerId   []byte   `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId        string   `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	PathAttribute string   `protobuf:"bytes,3,opt,name=path_attribute,json=pathAttribute,proto3" json:"path_attribute,omitempty"`
-	Path          []string `protobuf:"bytes,4,rep,name=path,proto3" json:"path,omitempty"`
-	Attributes    []string `protobuf:"bytes,5,rep,name=attributes,proto3" json:"attributes,omitempty"`
-	LatestOnly    bool     `protobuf:"varint,6,opt,name=latest_only,json=latestOnly,proto3" json:"latest_only,omitempty"`
-	AllAttributes bool     `protobuf:"varint,7,opt,name=all_attributes,json=allAttributes,proto3" json:"all_attributes,omitempty"`
-	BearerToken   []byte   `protobuf:"bytes,8,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
+	// Container ID in V2 format.
+	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// Attribute to build path with. Default: "FileName".
+	PathAttribute string `protobuf:"bytes,3,opt,name=path_attribute,json=pathAttribute,proto3" json:"path_attribute,omitempty"`
+	// List of path components.
+	Path []string `protobuf:"bytes,4,rep,name=path,proto3" json:"path,omitempty"`
+	// List of attributes to include in response.
+	Attributes []string `protobuf:"bytes,5,rep,name=attributes,proto3" json:"attributes,omitempty"`
+	// Flag to return only the latest version of node.
+	LatestOnly bool `protobuf:"varint,6,opt,name=latest_only,json=latestOnly,proto3" json:"latest_only,omitempty"`
+	// Flag to return all stored attributes.
+	AllAttributes bool `protobuf:"varint,7,opt,name=all_attributes,json=allAttributes,proto3" json:"all_attributes,omitempty"`
+	// Bearer token in V2 format.
+	BearerToken []byte `protobuf:"bytes,8,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
 }
 
 func (x *GetNodeByPathRequest_Body) Reset() {
@@ -1506,14 +1573,20 @@ func (x *GetNodeByPathRequest_Body) GetBearerToken() []byte {
 	return nil
 }
 
+// Information about a single tree node.
 type GetNodeByPathResponse_Info struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	NodeId    uint64      `protobuf:"varint,1,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
-	Timestamp uint64      `protobuf:"varint,2,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
-	Meta      []*KeyValue `protobuf:"bytes,3,rep,name=meta,proto3" json:"meta,omitempty"`
+	// Node ID.
+	NodeId uint64 `protobuf:"varint,1,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
+	// Timestamp of the last operation with the node.
+	Timestamp uint64 `protobuf:"varint,2,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	// Node meta-information.
+	Meta []*KeyValue `protobuf:"bytes,3,rep,name=meta,proto3" json:"meta,omitempty"`
+	// Parent ID.
+	ParentId uint64 `protobuf:"varint,4,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
 }
 
 func (x *GetNodeByPathResponse_Info) Reset() {
@@ -1569,11 +1642,19 @@ func (x *GetNodeByPathResponse_Info) GetMeta() []*KeyValue {
 	return nil
 }
 
+func (x *GetNodeByPathResponse_Info) GetParentId() uint64 {
+	if x != nil {
+		return x.ParentId
+	}
+	return 0
+}
+
 type GetNodeByPathResponse_Body struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// List of nodes stored by path.
 	Nodes []*GetNodeByPathResponse_Info `protobuf:"bytes,1,rep,name=nodes,proto3" json:"nodes,omitempty"`
 }
 
@@ -1621,12 +1702,16 @@ type GetSubTreeRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Container ID in V2 format.
 	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId      string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	RootId      uint64 `protobuf:"varint,3,opt,name=root_id,json=rootId,proto3" json:"root_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// ID of the root node of a subtree.
+	RootId uint64 `protobuf:"varint,3,opt,name=root_id,json=rootId,proto3" json:"root_id,omitempty"`
 	// Optional depth of the traversal. Zero means return only root.
 	// Maximum depth is 10.
-	Depth       uint32 `protobuf:"varint,4,opt,name=depth,proto3" json:"depth,omitempty"`
+	Depth uint32 `protobuf:"varint,4,opt,name=depth,proto3" json:"depth,omitempty"`
+	// Bearer token in V2 format.
 	BearerToken []byte `protobuf:"bytes,5,opt,name=bearer_token,json=bearerToken,proto3" json:"bearer_token,omitempty"`
 }
 
@@ -1702,10 +1787,14 @@ type GetSubTreeResponse_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	NodeId    uint64      `protobuf:"varint,1,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
-	ParentId  uint64      `protobuf:"varint,2,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
-	Timestamp uint64      `protobuf:"varint,3,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
-	Meta      []*KeyValue `protobuf:"bytes,4,rep,name=meta,proto3" json:"meta,omitempty"`
+	// ID of the node.
+	NodeId uint64 `protobuf:"varint,1,opt,name=node_id,json=nodeId,proto3" json:"node_id,omitempty"`
+	// ID of the parent.
+	ParentId uint64 `protobuf:"varint,2,opt,name=parent_id,json=parentId,proto3" json:"parent_id,omitempty"`
+	// Time node was first added to a tree.
+	Timestamp uint64 `protobuf:"varint,3,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
+	// Node meta-information.
+	Meta []*KeyValue `protobuf:"bytes,4,rep,name=meta,proto3" json:"meta,omitempty"`
 }
 
 func (x *GetSubTreeResponse_Body) Reset() {
@@ -1773,9 +1862,12 @@ type ApplyRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	ContainerId []byte   `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId      string   `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	Operation   *LogMove `protobuf:"bytes,3,opt,name=operation,proto3" json:"operation,omitempty"`
+	// Container ID in V2 format.
+	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// Operation to be applied.
+	Operation *LogMove `protobuf:"bytes,3,opt,name=operation,proto3" json:"operation,omitempty"`
 }
 
 func (x *ApplyRequest_Body) Reset() {
@@ -1874,10 +1966,14 @@ type GetOpLogRequest_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Container ID in V2 format.
 	ContainerId []byte `protobuf:"bytes,1,opt,name=container_id,json=containerId,proto3" json:"container_id,omitempty"`
-	TreeId      string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
-	Height      uint64 `protobuf:"varint,3,opt,name=height,proto3" json:"height,omitempty"`
-	Count       uint64 `protobuf:"varint,4,opt,name=count,proto3" json:"count,omitempty"`
+	// The name of the tree.
+	TreeId string `protobuf:"bytes,2,opt,name=tree_id,json=treeId,proto3" json:"tree_id,omitempty"`
+	// Starting height to return logs from.
+	Height uint64 `protobuf:"varint,3,opt,name=height,proto3" json:"height,omitempty"`
+	// Amount of operations to return.
+	Count uint64 `protobuf:"varint,4,opt,name=count,proto3" json:"count,omitempty"`
 }
 
 func (x *GetOpLogRequest_Body) Reset() {
@@ -1945,6 +2041,7 @@ type GetOpLogResponse_Body struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
+	// Operation on a tree.
 	Operation *LogMove `protobuf:"bytes,1,opt,name=operation,proto3" json:"operation,omitempty"`
 }
 
@@ -2124,7 +2221,7 @@ var file_pkg_services_tree_service_proto_rawDesc = []byte{
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+	0x6f, 0x33,
 }
 
 var (
diff --git a/pkg/services/tree/service.proto b/pkg/services/tree/service.proto
index 94741c4da..43aba82c4 100644
--- a/pkg/services/tree/service.proto
+++ b/pkg/services/tree/service.proto
@@ -202,6 +202,8 @@ message GetNodeByPathResponse {
     uint64 timestamp = 2;
     // Node meta-information.
     repeated KeyValue meta = 3;
+    // Parent ID.
+    uint64 parent_id = 4;
   }
   message Body {
     // List of nodes stored by path.
diff --git a/pkg/services/tree/service_grpc.pb.go b/pkg/services/tree/service_grpc.pb.go
index 7de60958c..091f30c5c 100644
--- a/pkg/services/tree/service_grpc.pb.go
+++ b/pkg/services/tree/service_grpc.pb.go
@@ -1,7 +1,7 @@
 // Code generated by protoc-gen-go-grpc. DO NOT EDIT.
 // versions:
 // - protoc-gen-go-grpc v1.2.0
-// - protoc             v3.21.1
+// - protoc             v3.21.4
 // source: pkg/services/tree/service.proto
 
 package tree
@@ -37,6 +37,7 @@ type TreeServiceClient interface {
 	// Apply pushes log operation from another node to the current.
 	// The request must be signed by a container node.
 	Apply(ctx context.Context, in *ApplyRequest, opts ...grpc.CallOption) (*ApplyResponse, error)
+	// GetOpLog returns a stream of logged operations starting from some height.
 	GetOpLog(ctx context.Context, in *GetOpLogRequest, opts ...grpc.CallOption) (TreeService_GetOpLogClient, error)
 }
 
@@ -185,6 +186,7 @@ type TreeServiceServer interface {
 	// Apply pushes log operation from another node to the current.
 	// The request must be signed by a container node.
 	Apply(context.Context, *ApplyRequest) (*ApplyResponse, error)
+	// GetOpLog returns a stream of logged operations starting from some height.
 	GetOpLog(*GetOpLogRequest, TreeService_GetOpLogServer) error
 }
 
diff --git a/pkg/services/tree/service_neofs.pb.go b/pkg/services/tree/service_neofs.pb.go
index eb4b2b473..0eea38fe0 100644
--- a/pkg/services/tree/service_neofs.pb.go
+++ b/pkg/services/tree/service_neofs.pb.go
@@ -779,6 +779,7 @@ func (x *GetNodeByPathResponse_Info) StableSize() (size int) {
 	for i := range x.Meta {
 		size += proto.NestedStructureSize(3, x.Meta[i])
 	}
+	size += proto.UInt64Size(4, x.ParentId)
 	return size
 }
 
@@ -803,6 +804,7 @@ func (x *GetNodeByPathResponse_Info) StableMarshal(buf []byte) []byte {
 	for i := range x.Meta {
 		offset += proto.NestedStructureMarshal(3, buf[offset:], x.Meta[i])
 	}
+	offset += proto.UInt64Marshal(4, buf[offset:], x.ParentId)
 	return buf
 }
 
diff --git a/pkg/services/tree/types.pb.go b/pkg/services/tree/types.pb.go
index 5a2173073..5dac12d55 100644
--- a/pkg/services/tree/types.pb.go
+++ b/pkg/services/tree/types.pb.go
@@ -1,7 +1,10 @@
+//*
+// Auxiliary structures to use with tree service.
+
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
 // 	protoc-gen-go v1.26.0
-// 	protoc        v3.21.1
+// 	protoc        v3.21.4
 // source: pkg/services/tree/types.proto
 
 package tree
@@ -26,7 +29,9 @@ type KeyValue struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Key   string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// Attribute name.
+	Key string `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// Attribute value.
 	Value []byte `protobuf:"bytes,2,opt,name=value,proto3" json:"value,omitempty"`
 }
 
@@ -149,7 +154,9 @@ type Signature struct {
 	sizeCache     protoimpl.SizeCache
 	unknownFields protoimpl.UnknownFields
 
-	Key  []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// Serialized public key as defined in NeoFS API.
+	Key []byte `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
+	// Signature of a message body.
 	Sign []byte `protobuf:"bytes,2,opt,name=sign,json=signature,proto3" json:"sign,omitempty"`
 }