diff --git a/docs/apidocs.swagger.yaml b/docs/apidocs.swagger.yaml
index eb257492..30f77d14 100644
--- a/docs/apidocs.swagger.yaml
+++ b/docs/apidocs.swagger.yaml
@@ -11,7 +11,6 @@ tags:
   - name: MarkdownService
   - name: ResourceService
   - name: MemoService
-  - name: TagService
   - name: WebhookService
   - name: WorkspaceService
   - name: WorkspaceSettingService
@@ -494,137 +493,6 @@ paths:
           type: string
       tags:
         - ResourceService
-  /api/v1/tags:
-    get:
-      summary: ListTags lists tags.
-      operationId: TagService_ListTags
-      responses:
-        "200":
-          description: A successful response.
-          schema:
-            $ref: '#/definitions/v1ListTagsResponse'
-        default:
-          description: An unexpected error response.
-          schema:
-            $ref: '#/definitions/googlerpcStatus'
-      tags:
-        - TagService
-    delete:
-      summary: DeleteTag deletes a tag.
-      operationId: TagService_DeleteTag
-      responses:
-        "200":
-          description: A successful response.
-          schema:
-            type: object
-            properties: {}
-        default:
-          description: An unexpected error response.
-          schema:
-            $ref: '#/definitions/googlerpcStatus'
-      parameters:
-        - name: tag.name
-          in: query
-          required: false
-          type: string
-        - name: tag.creator
-          description: |-
-            The creator of tags.
-            Format: users/{id}
-          in: query
-          required: false
-          type: string
-      tags:
-        - TagService
-    post:
-      summary: UpsertTag upserts a tag.
-      operationId: TagService_UpsertTag
-      responses:
-        "200":
-          description: A successful response.
-          schema:
-            $ref: '#/definitions/v1Tag'
-        default:
-          description: An unexpected error response.
-          schema:
-            $ref: '#/definitions/googlerpcStatus'
-      parameters:
-        - name: body
-          in: body
-          required: true
-          schema:
-            $ref: '#/definitions/v1UpsertTagRequest'
-      tags:
-        - TagService
-  /api/v1/tags/suggestion:
-    get:
-      summary: GetTagSuggestions gets tag suggestions from the user's memos.
-      operationId: TagService_GetTagSuggestions
-      responses:
-        "200":
-          description: A successful response.
-          schema:
-            $ref: '#/definitions/v1GetTagSuggestionsResponse'
-        default:
-          description: An unexpected error response.
-          schema:
-            $ref: '#/definitions/googlerpcStatus'
-      parameters:
-        - name: user
-          description: |-
-            The creator of tags.
-            Format: users/{id}
-          in: query
-          required: false
-          type: string
-      tags:
-        - TagService
-  /api/v1/tags:batchUpsert:
-    post:
-      summary: BatchUpsertTag upserts multiple tags.
-      operationId: TagService_BatchUpsertTag
-      responses:
-        "200":
-          description: A successful response.
-          schema:
-            type: object
-            properties: {}
-        default:
-          description: An unexpected error response.
-          schema:
-            $ref: '#/definitions/googlerpcStatus'
-      parameters:
-        - name: body
-          in: body
-          required: true
-          schema:
-            $ref: '#/definitions/v1BatchUpsertTagRequest'
-      tags:
-        - TagService
-  /api/v1/tags:rename:
-    patch:
-      summary: |-
-        RenameTag renames a tag.
-        All related memos will be updated.
-      operationId: TagService_RenameTag
-      responses:
-        "200":
-          description: A successful response.
-          schema:
-            type: object
-            properties: {}
-        default:
-          description: An unexpected error response.
-          schema:
-            $ref: '#/definitions/googlerpcStatus'
-      parameters:
-        - name: body
-          in: body
-          required: true
-          schema:
-            $ref: '#/definitions/v1RenameTagRequest'
-      tags:
-        - TagService
   /api/v1/users:
     get:
       summary: ListUsers returns a list of users.
@@ -1044,6 +912,10 @@ paths:
                 readOnly: true
               visibility:
                 $ref: '#/definitions/v1Visibility'
+              tags:
+                type: array
+                items:
+                  type: string
               pinned:
                 type: boolean
               parentId:
@@ -1605,6 +1477,98 @@ paths:
           pattern: users/[^/]+
       tags:
         - UserService
+  /api/v1/{parent}/tags:
+    get:
+      summary: ListMemoTags lists tags for a memo.
+      operationId: MemoService_ListMemoTags
+      responses:
+        "200":
+          description: A successful response.
+          schema:
+            $ref: '#/definitions/v1ListMemoTagsResponse'
+        default:
+          description: An unexpected error response.
+          schema:
+            $ref: '#/definitions/googlerpcStatus'
+      parameters:
+        - name: parent
+          description: |-
+            The parent, who owns the tags.
+            Format: memos/{id}. Use "memos/-" to list all tags.
+          in: path
+          required: true
+          type: string
+          pattern: memos/[^/]+
+        - name: rebuild
+          description: Rebuild the tags.
+          in: query
+          required: false
+          type: boolean
+      tags:
+        - MemoService
+  /api/v1/{parent}/tags/{tag}:
+    delete:
+      summary: DeleteMemoTag deletes a tag for a memo.
+      operationId: MemoService_DeleteMemoTag
+      responses:
+        "200":
+          description: A successful response.
+          schema:
+            type: object
+            properties: {}
+        default:
+          description: An unexpected error response.
+          schema:
+            $ref: '#/definitions/googlerpcStatus'
+      parameters:
+        - name: parent
+          description: |-
+            The parent, who owns the tags.
+            Format: memos/{id}. Use "memos/-" to delete all tags.
+          in: path
+          required: true
+          type: string
+          pattern: memos/[^/]+
+        - name: tag
+          in: path
+          required: true
+          type: string
+        - name: deleteRelatedMemos
+          in: query
+          required: false
+          type: boolean
+      tags:
+        - MemoService
+  /api/v1/{parent}/tags:rename:
+    patch:
+      summary: RenameMemoTag renames a tag for a memo.
+      operationId: MemoService_RenameMemoTag
+      responses:
+        "200":
+          description: A successful response.
+          schema:
+            type: object
+            properties: {}
+        default:
+          description: An unexpected error response.
+          schema:
+            $ref: '#/definitions/googlerpcStatus'
+      parameters:
+        - name: parent
+          description: |-
+            The parent, who owns the tags.
+            Format: memos/{id}. Use "memos/-" to rename all tags.
+          in: path
+          required: true
+          type: string
+          pattern: memos/[^/]+
+        - name: body
+          in: body
+          required: true
+          schema:
+            $ref: '#/definitions/MemoServiceRenameMemoTagBody'
+      tags:
+        - MemoService
   /api/v1/{resource.name}:
     patch:
       summary: UpdateResource updates a resource.
@@ -1850,6 +1814,13 @@ paths:
       tags:
         - ResourceService
 definitions:
+  MemoServiceRenameMemoTagBody:
+    type: object
+    properties:
+      oldTag:
+        type: string
+      newTag:
+        type: string
   MemoServiceSetMemoRelationsBody:
     type: object
     properties:
@@ -2323,14 +2294,6 @@ definitions:
         type: string
       isRawText:
         type: boolean
-  v1BatchUpsertTagRequest:
-    type: object
-    properties:
-      requests:
-        type: array
-        items:
-          type: object
-          $ref: '#/definitions/v1UpsertTagRequest'
   v1BlockquoteNode:
     type: object
     properties:
@@ -2406,13 +2369,6 @@ definitions:
       content:
         type: string
         format: byte
-  v1GetTagSuggestionsResponse:
-    type: object
-    properties:
-      tags:
-        type: array
-        items:
-          type: string
   v1GetUserMemosStatsResponse:
     type: object
     properties:
@@ -2563,6 +2519,18 @@ definitions:
         items:
           type: object
           $ref: '#/definitions/v1Resource'
+  v1ListMemoTagsResponse:
+    type: object
+    properties:
+      tagAmounts:
+        type: object
+        additionalProperties:
+          type: integer
+          format: int32
+        description: |-
+          tag_amounts is the amount of tags.
+          key is the tag name. e.g. "tag1".
+          value is the amount of the tag.
   v1ListMemosResponse:
     type: object
     properties:
@@ -2584,14 +2552,6 @@ definitions:
         items:
           type: object
           $ref: '#/definitions/v1Resource'
-  v1ListTagsResponse:
-    type: object
-    properties:
-      tags:
-        type: array
-        items:
-          type: object
-          $ref: '#/definitions/v1Tag'
   v1ListUserAccessTokensResponse:
     type: object
     properties:
@@ -2672,6 +2632,10 @@ definitions:
         readOnly: true
       visibility:
         $ref: '#/definitions/v1Visibility'
+      tags:
+        type: array
+        items:
+          type: string
       pinned:
         type: boolean
       parentId:
@@ -2888,18 +2852,6 @@ definitions:
         type: string
       params:
         type: string
-  v1RenameTagRequest:
-    type: object
-    properties:
-      user:
-        type: string
-        title: |-
-          The creator of tags.
-          Format: users/{id}
-      oldName:
-        type: string
-      newName:
-        type: string
   v1Resource:
     type: object
     properties:
@@ -3013,16 +2965,6 @@ definitions:
         items:
           type: object
           $ref: '#/definitions/TableNodeRow'
-  v1Tag:
-    type: object
-    properties:
-      name:
-        type: string
-      creator:
-        type: string
-        title: |-
-          The creator of tags.
-          Format: users/{id}
   v1TagNode:
     type: object
     properties:
@@ -3061,11 +3003,6 @@ definitions:
         items:
           type: object
           $ref: '#/definitions/v1Node'
-  v1UpsertTagRequest:
-    type: object
-    properties:
-      name:
-        type: string
   v1User:
     type: object
     properties:
diff --git a/internal/util/util.go b/internal/util/util.go
index ae6719f3..6a2e84c9 100644
--- a/internal/util/util.go
+++ b/internal/util/util.go
@@ -61,3 +61,13 @@ func RandomString(n int) (string, error) {
 	}
 	return sb.String(), nil
 }
+
+// ReplaceString replaces all occurrences of old in slice with new.
+func ReplaceString(slice []string, old, new string) []string {
+	for i, s := range slice {
+		if s == old {
+			slice[i] = new
+		}
+	}
+	return slice
+}
diff --git a/proto/api/v1/memo_service.proto b/proto/api/v1/memo_service.proto
index 92eb226d..913b9a30 100644
--- a/proto/api/v1/memo_service.proto
+++ b/proto/api/v1/memo_service.proto
@@ -57,6 +57,21 @@ service MemoService {
       body: "*"
     };
   }
+  // ListMemoTags lists tags for a memo.
+  rpc ListMemoTags(ListMemoTagsRequest) returns (ListMemoTagsResponse) {
+    option (google.api.http) = {get: "/api/v1/{parent=memos/*}/tags"};
+  }
+  // RenameMemoTag renames a tag for a memo.
+  rpc RenameMemoTag(RenameMemoTagRequest) returns (google.protobuf.Empty) {
+    option (google.api.http) = {
+      patch: "/api/v1/{parent=memos/*}/tags:rename"
+      body: "*"
+    };
+  }
+  // DeleteMemoTag deletes a tag for a memo.
+  rpc DeleteMemoTag(DeleteMemoTagRequest) returns (google.protobuf.Empty) {
+    option (google.api.http) = {delete: "/api/v1/{parent=memos/*}/tags/{tag}"};
+  }
   // SetMemoResources sets resources for a memo.
   rpc SetMemoResources(SetMemoResourcesRequest) returns (google.protobuf.Empty) {
     option (google.api.http) = {
@@ -155,15 +170,17 @@ message Memo {
 
   Visibility visibility = 10;
 
-  bool pinned = 11;
+  repeated string tags = 11;
 
-  optional int32 parent_id = 12 [(google.api.field_behavior) = OUTPUT_ONLY];
+  bool pinned = 12;
 
-  repeated Resource resources = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
+  optional int32 parent_id = 13 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  repeated MemoRelation relations = 14 [(google.api.field_behavior) = OUTPUT_ONLY];
+  repeated Resource resources = 14 [(google.api.field_behavior) = OUTPUT_ONLY];
 
-  repeated Reaction reactions = 15 [(google.api.field_behavior) = OUTPUT_ONLY];
+  repeated MemoRelation relations = 15 [(google.api.field_behavior) = OUTPUT_ONLY];
+
+  repeated Reaction reactions = 16 [(google.api.field_behavior) = OUTPUT_ONLY];
 }
 
 message CreateMemoRequest {
@@ -230,6 +247,38 @@ message ExportMemosResponse {
   bytes content = 1;
 }
 
+message ListMemoTagsRequest {
+  // The parent, who owns the tags.
+  // Format: memos/{id}. Use "memos/-" to list all tags.
+  string parent = 1;
+
+  // Rebuild the tags.
+  bool rebuild = 2;
+}
+
+message ListMemoTagsResponse {
+  // tag_amounts is the amount of tags.
+  // key is the tag name. e.g. "tag1".
+  // value is the amount of the tag.
+  map<string, int32> tag_amounts = 1;
+}
+
+message RenameMemoTagRequest {
+  // The parent, who owns the tags.
+  // Format: memos/{id}. Use "memos/-" to rename all tags.
+  string parent = 1;
+  string old_tag = 2;
+  string new_tag = 3;
+}
+
+message DeleteMemoTagRequest {
+  // The parent, who owns the tags.
+  // Format: memos/{id}. Use "memos/-" to delete all tags.
+  string parent = 1;
+  string tag = 2;
+  bool delete_related_memos = 3;
+}
+
 message SetMemoResourcesRequest {
   // The name of the memo.
   // Format: memos/{id}
diff --git a/proto/api/v1/tag_service.proto b/proto/api/v1/tag_service.proto
deleted file mode 100644
index e59a4f8d..00000000
--- a/proto/api/v1/tag_service.proto
+++ /dev/null
@@ -1,88 +0,0 @@
-syntax = "proto3";
-
-package memos.api.v1;
-
-import "google/api/annotations.proto";
-import "google/protobuf/empty.proto";
-
-option go_package = "gen/api/v1";
-
-service TagService {
-  // UpsertTag upserts a tag.
-  rpc UpsertTag(UpsertTagRequest) returns (Tag) {
-    option (google.api.http) = {
-      post: "/api/v1/tags",
-      body: "*"
-    };
-  }
-  // BatchUpsertTag upserts multiple tags.
-  rpc BatchUpsertTag(BatchUpsertTagRequest) returns (google.protobuf.Empty) {
-    option (google.api.http) = {
-      post: "/api/v1/tags:batchUpsert",
-      body: "*"
-    };
-  }
-  // ListTags lists tags.
-  rpc ListTags(ListTagsRequest) returns (ListTagsResponse) {
-    option (google.api.http) = {get: "/api/v1/tags"};
-  }
-  // RenameTag renames a tag.
-  // All related memos will be updated.
-  rpc RenameTag(RenameTagRequest) returns (google.protobuf.Empty) {
-    option (google.api.http) = {
-      patch: "/api/v1/tags:rename",
-      body: "*"
-    };
-  }
-  // DeleteTag deletes a tag.
-  rpc DeleteTag(DeleteTagRequest) returns (google.protobuf.Empty) {
-    option (google.api.http) = {delete: "/api/v1/tags"};
-  }
-  // GetTagSuggestions gets tag suggestions from the user's memos.
-  rpc GetTagSuggestions(GetTagSuggestionsRequest) returns (GetTagSuggestionsResponse) {
-    option (google.api.http) = {get: "/api/v1/tags/suggestion"};
-  }
-}
-
-message Tag {
-  string name = 1;
-  // The creator of tags.
-  // Format: users/{id}
-  string creator = 2;
-}
-
-message UpsertTagRequest {
-  string name = 1;
-}
-
-message BatchUpsertTagRequest {
-  repeated UpsertTagRequest requests = 1;
-}
-
-message ListTagsRequest {}
-
-message ListTagsResponse {
-  repeated Tag tags = 1;
-}
-
-message RenameTagRequest {
-  // The creator of tags.
-  // Format: users/{id}
-  string user = 1;
-  string old_name = 2;
-  string new_name = 3;
-}
-
-message DeleteTagRequest {
-  Tag tag = 1;
-}
-
-message GetTagSuggestionsRequest {
-  // The creator of tags.
-  // Format: users/{id}
-  string user = 1;
-}
-
-message GetTagSuggestionsResponse {
-  repeated string tags = 1;
-}
diff --git a/proto/gen/api/v1/activity_service.pb.go b/proto/gen/api/v1/activity_service.pb.go
index 3d1d0a8f..d6742fb5 100644
--- a/proto/gen/api/v1/activity_service.pb.go
+++ b/proto/gen/api/v1/activity_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/activity_service.proto
 
diff --git a/proto/gen/api/v1/auth_service.pb.go b/proto/gen/api/v1/auth_service.pb.go
index 0c413e38..985749a5 100644
--- a/proto/gen/api/v1/auth_service.pb.go
+++ b/proto/gen/api/v1/auth_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/auth_service.proto
 
diff --git a/proto/gen/api/v1/common.pb.go b/proto/gen/api/v1/common.pb.go
index 6199302c..93d0a05b 100644
--- a/proto/gen/api/v1/common.pb.go
+++ b/proto/gen/api/v1/common.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/common.proto
 
diff --git a/proto/gen/api/v1/idp_service.pb.go b/proto/gen/api/v1/idp_service.pb.go
index f1fcfa76..059029b6 100644
--- a/proto/gen/api/v1/idp_service.pb.go
+++ b/proto/gen/api/v1/idp_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/idp_service.proto
 
diff --git a/proto/gen/api/v1/inbox_service.pb.go b/proto/gen/api/v1/inbox_service.pb.go
index 876ff397..02efb78b 100644
--- a/proto/gen/api/v1/inbox_service.pb.go
+++ b/proto/gen/api/v1/inbox_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/inbox_service.proto
 
diff --git a/proto/gen/api/v1/markdown_service.pb.go b/proto/gen/api/v1/markdown_service.pb.go
index 6bbff0fe..aa9ec972 100644
--- a/proto/gen/api/v1/markdown_service.pb.go
+++ b/proto/gen/api/v1/markdown_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/markdown_service.proto
 
diff --git a/proto/gen/api/v1/memo_relation_service.pb.go b/proto/gen/api/v1/memo_relation_service.pb.go
index f7dddf4a..cfd94675 100644
--- a/proto/gen/api/v1/memo_relation_service.pb.go
+++ b/proto/gen/api/v1/memo_relation_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/memo_relation_service.proto
 
diff --git a/proto/gen/api/v1/memo_service.pb.go b/proto/gen/api/v1/memo_service.pb.go
index 2da7173c..64f99339 100644
--- a/proto/gen/api/v1/memo_service.pb.go
+++ b/proto/gen/api/v1/memo_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/memo_service.proto
 
@@ -97,11 +97,12 @@ type Memo struct {
 	Content     string                 `protobuf:"bytes,8,opt,name=content,proto3" json:"content,omitempty"`
 	Nodes       []*Node                `protobuf:"bytes,9,rep,name=nodes,proto3" json:"nodes,omitempty"`
 	Visibility  Visibility             `protobuf:"varint,10,opt,name=visibility,proto3,enum=memos.api.v1.Visibility" json:"visibility,omitempty"`
-	Pinned      bool                   `protobuf:"varint,11,opt,name=pinned,proto3" json:"pinned,omitempty"`
-	ParentId    *int32                 `protobuf:"varint,12,opt,name=parent_id,json=parentId,proto3,oneof" json:"parent_id,omitempty"`
-	Resources   []*Resource            `protobuf:"bytes,13,rep,name=resources,proto3" json:"resources,omitempty"`
-	Relations   []*MemoRelation        `protobuf:"bytes,14,rep,name=relations,proto3" json:"relations,omitempty"`
-	Reactions   []*Reaction            `protobuf:"bytes,15,rep,name=reactions,proto3" json:"reactions,omitempty"`
+	Tags        []string               `protobuf:"bytes,11,rep,name=tags,proto3" json:"tags,omitempty"`
+	Pinned      bool                   `protobuf:"varint,12,opt,name=pinned,proto3" json:"pinned,omitempty"`
+	ParentId    *int32                 `protobuf:"varint,13,opt,name=parent_id,json=parentId,proto3,oneof" json:"parent_id,omitempty"`
+	Resources   []*Resource            `protobuf:"bytes,14,rep,name=resources,proto3" json:"resources,omitempty"`
+	Relations   []*MemoRelation        `protobuf:"bytes,15,rep,name=relations,proto3" json:"relations,omitempty"`
+	Reactions   []*Reaction            `protobuf:"bytes,16,rep,name=reactions,proto3" json:"reactions,omitempty"`
 }
 
 func (x *Memo) Reset() {
@@ -206,6 +207,13 @@ func (x *Memo) GetVisibility() Visibility {
 	return Visibility_VISIBILITY_UNSPECIFIED
 }
 
+func (x *Memo) GetTags() []string {
+	if x != nil {
+		return x.Tags
+	}
+	return nil
+}
+
 func (x *Memo) GetPinned() bool {
 	if x != nil {
 		return x.Pinned
@@ -765,6 +773,244 @@ func (x *ExportMemosResponse) GetContent() []byte {
 	return nil
 }
 
+type ListMemoTagsRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The parent, who owns the tags.
+	// Format: memos/{id}. Use "memos/-" to list all tags.
+	Parent string `protobuf:"bytes,1,opt,name=parent,proto3" json:"parent,omitempty"`
+	// Rebuild the tags.
+	Rebuild bool `protobuf:"varint,2,opt,name=rebuild,proto3" json:"rebuild,omitempty"`
+}
+
+func (x *ListMemoTagsRequest) Reset() {
+	*x = ListMemoTagsRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_v1_memo_service_proto_msgTypes[11]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListMemoTagsRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListMemoTagsRequest) ProtoMessage() {}
+
+func (x *ListMemoTagsRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_memo_service_proto_msgTypes[11]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListMemoTagsRequest.ProtoReflect.Descriptor instead.
+func (*ListMemoTagsRequest) Descriptor() ([]byte, []int) {
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{11}
+}
+
+func (x *ListMemoTagsRequest) GetParent() string {
+	if x != nil {
+		return x.Parent
+	}
+	return ""
+}
+
+func (x *ListMemoTagsRequest) GetRebuild() bool {
+	if x != nil {
+		return x.Rebuild
+	}
+	return false
+}
+
+type ListMemoTagsResponse struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// tag_amounts is the amount of tags.
+	// key is the tag name. e.g. "tag1".
+	// value is the amount of the tag.
+	TagAmounts map[string]int32 `protobuf:"bytes,1,rep,name=tag_amounts,json=tagAmounts,proto3" json:"tag_amounts,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"varint,2,opt,name=value,proto3"`
+}
+
+func (x *ListMemoTagsResponse) Reset() {
+	*x = ListMemoTagsResponse{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_v1_memo_service_proto_msgTypes[12]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *ListMemoTagsResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*ListMemoTagsResponse) ProtoMessage() {}
+
+func (x *ListMemoTagsResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_memo_service_proto_msgTypes[12]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use ListMemoTagsResponse.ProtoReflect.Descriptor instead.
+func (*ListMemoTagsResponse) Descriptor() ([]byte, []int) {
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{12}
+}
+
+func (x *ListMemoTagsResponse) GetTagAmounts() map[string]int32 {
+	if x != nil {
+		return x.TagAmounts
+	}
+	return nil
+}
+
+type RenameMemoTagRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The parent, who owns the tags.
+	// Format: memos/{id}. Use "memos/-" to rename all tags.
+	Parent string `protobuf:"bytes,1,opt,name=parent,proto3" json:"parent,omitempty"`
+	OldTag string `protobuf:"bytes,2,opt,name=old_tag,json=oldTag,proto3" json:"old_tag,omitempty"`
+	NewTag string `protobuf:"bytes,3,opt,name=new_tag,json=newTag,proto3" json:"new_tag,omitempty"`
+}
+
+func (x *RenameMemoTagRequest) Reset() {
+	*x = RenameMemoTagRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_v1_memo_service_proto_msgTypes[13]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *RenameMemoTagRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*RenameMemoTagRequest) ProtoMessage() {}
+
+func (x *RenameMemoTagRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_memo_service_proto_msgTypes[13]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use RenameMemoTagRequest.ProtoReflect.Descriptor instead.
+func (*RenameMemoTagRequest) Descriptor() ([]byte, []int) {
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{13}
+}
+
+func (x *RenameMemoTagRequest) GetParent() string {
+	if x != nil {
+		return x.Parent
+	}
+	return ""
+}
+
+func (x *RenameMemoTagRequest) GetOldTag() string {
+	if x != nil {
+		return x.OldTag
+	}
+	return ""
+}
+
+func (x *RenameMemoTagRequest) GetNewTag() string {
+	if x != nil {
+		return x.NewTag
+	}
+	return ""
+}
+
+type DeleteMemoTagRequest struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// The parent, who owns the tags.
+	// Format: memos/{id}. Use "memos/-" to delete all tags.
+	Parent             string `protobuf:"bytes,1,opt,name=parent,proto3" json:"parent,omitempty"`
+	Tag                string `protobuf:"bytes,2,opt,name=tag,proto3" json:"tag,omitempty"`
+	DeleteRelatedMemos bool   `protobuf:"varint,3,opt,name=delete_related_memos,json=deleteRelatedMemos,proto3" json:"delete_related_memos,omitempty"`
+}
+
+func (x *DeleteMemoTagRequest) Reset() {
+	*x = DeleteMemoTagRequest{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_api_v1_memo_service_proto_msgTypes[14]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *DeleteMemoTagRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*DeleteMemoTagRequest) ProtoMessage() {}
+
+func (x *DeleteMemoTagRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_api_v1_memo_service_proto_msgTypes[14]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use DeleteMemoTagRequest.ProtoReflect.Descriptor instead.
+func (*DeleteMemoTagRequest) Descriptor() ([]byte, []int) {
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{14}
+}
+
+func (x *DeleteMemoTagRequest) GetParent() string {
+	if x != nil {
+		return x.Parent
+	}
+	return ""
+}
+
+func (x *DeleteMemoTagRequest) GetTag() string {
+	if x != nil {
+		return x.Tag
+	}
+	return ""
+}
+
+func (x *DeleteMemoTagRequest) GetDeleteRelatedMemos() bool {
+	if x != nil {
+		return x.DeleteRelatedMemos
+	}
+	return false
+}
+
 type SetMemoResourcesRequest struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -779,7 +1025,7 @@ type SetMemoResourcesRequest struct {
 func (x *SetMemoResourcesRequest) Reset() {
 	*x = SetMemoResourcesRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[11]
+		mi := &file_api_v1_memo_service_proto_msgTypes[15]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -792,7 +1038,7 @@ func (x *SetMemoResourcesRequest) String() string {
 func (*SetMemoResourcesRequest) ProtoMessage() {}
 
 func (x *SetMemoResourcesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[11]
+	mi := &file_api_v1_memo_service_proto_msgTypes[15]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -805,7 +1051,7 @@ func (x *SetMemoResourcesRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SetMemoResourcesRequest.ProtoReflect.Descriptor instead.
 func (*SetMemoResourcesRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{11}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{15}
 }
 
 func (x *SetMemoResourcesRequest) GetName() string {
@@ -835,7 +1081,7 @@ type ListMemoResourcesRequest struct {
 func (x *ListMemoResourcesRequest) Reset() {
 	*x = ListMemoResourcesRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[12]
+		mi := &file_api_v1_memo_service_proto_msgTypes[16]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -848,7 +1094,7 @@ func (x *ListMemoResourcesRequest) String() string {
 func (*ListMemoResourcesRequest) ProtoMessage() {}
 
 func (x *ListMemoResourcesRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[12]
+	mi := &file_api_v1_memo_service_proto_msgTypes[16]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -861,7 +1107,7 @@ func (x *ListMemoResourcesRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoResourcesRequest.ProtoReflect.Descriptor instead.
 func (*ListMemoResourcesRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{12}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{16}
 }
 
 func (x *ListMemoResourcesRequest) GetName() string {
@@ -882,7 +1128,7 @@ type ListMemoResourcesResponse struct {
 func (x *ListMemoResourcesResponse) Reset() {
 	*x = ListMemoResourcesResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[13]
+		mi := &file_api_v1_memo_service_proto_msgTypes[17]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -895,7 +1141,7 @@ func (x *ListMemoResourcesResponse) String() string {
 func (*ListMemoResourcesResponse) ProtoMessage() {}
 
 func (x *ListMemoResourcesResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[13]
+	mi := &file_api_v1_memo_service_proto_msgTypes[17]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -908,7 +1154,7 @@ func (x *ListMemoResourcesResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoResourcesResponse.ProtoReflect.Descriptor instead.
 func (*ListMemoResourcesResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{13}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{17}
 }
 
 func (x *ListMemoResourcesResponse) GetResources() []*Resource {
@@ -932,7 +1178,7 @@ type SetMemoRelationsRequest struct {
 func (x *SetMemoRelationsRequest) Reset() {
 	*x = SetMemoRelationsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[14]
+		mi := &file_api_v1_memo_service_proto_msgTypes[18]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -945,7 +1191,7 @@ func (x *SetMemoRelationsRequest) String() string {
 func (*SetMemoRelationsRequest) ProtoMessage() {}
 
 func (x *SetMemoRelationsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[14]
+	mi := &file_api_v1_memo_service_proto_msgTypes[18]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -958,7 +1204,7 @@ func (x *SetMemoRelationsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use SetMemoRelationsRequest.ProtoReflect.Descriptor instead.
 func (*SetMemoRelationsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{14}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{18}
 }
 
 func (x *SetMemoRelationsRequest) GetName() string {
@@ -988,7 +1234,7 @@ type ListMemoRelationsRequest struct {
 func (x *ListMemoRelationsRequest) Reset() {
 	*x = ListMemoRelationsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[15]
+		mi := &file_api_v1_memo_service_proto_msgTypes[19]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1001,7 +1247,7 @@ func (x *ListMemoRelationsRequest) String() string {
 func (*ListMemoRelationsRequest) ProtoMessage() {}
 
 func (x *ListMemoRelationsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[15]
+	mi := &file_api_v1_memo_service_proto_msgTypes[19]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1014,7 +1260,7 @@ func (x *ListMemoRelationsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoRelationsRequest.ProtoReflect.Descriptor instead.
 func (*ListMemoRelationsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{15}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{19}
 }
 
 func (x *ListMemoRelationsRequest) GetName() string {
@@ -1035,7 +1281,7 @@ type ListMemoRelationsResponse struct {
 func (x *ListMemoRelationsResponse) Reset() {
 	*x = ListMemoRelationsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[16]
+		mi := &file_api_v1_memo_service_proto_msgTypes[20]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1048,7 +1294,7 @@ func (x *ListMemoRelationsResponse) String() string {
 func (*ListMemoRelationsResponse) ProtoMessage() {}
 
 func (x *ListMemoRelationsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[16]
+	mi := &file_api_v1_memo_service_proto_msgTypes[20]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1061,7 +1307,7 @@ func (x *ListMemoRelationsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoRelationsResponse.ProtoReflect.Descriptor instead.
 func (*ListMemoRelationsResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{16}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{20}
 }
 
 func (x *ListMemoRelationsResponse) GetRelations() []*MemoRelation {
@@ -1085,7 +1331,7 @@ type CreateMemoCommentRequest struct {
 func (x *CreateMemoCommentRequest) Reset() {
 	*x = CreateMemoCommentRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[17]
+		mi := &file_api_v1_memo_service_proto_msgTypes[21]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1098,7 +1344,7 @@ func (x *CreateMemoCommentRequest) String() string {
 func (*CreateMemoCommentRequest) ProtoMessage() {}
 
 func (x *CreateMemoCommentRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[17]
+	mi := &file_api_v1_memo_service_proto_msgTypes[21]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1111,7 +1357,7 @@ func (x *CreateMemoCommentRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use CreateMemoCommentRequest.ProtoReflect.Descriptor instead.
 func (*CreateMemoCommentRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{17}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{21}
 }
 
 func (x *CreateMemoCommentRequest) GetName() string {
@@ -1141,7 +1387,7 @@ type ListMemoCommentsRequest struct {
 func (x *ListMemoCommentsRequest) Reset() {
 	*x = ListMemoCommentsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[18]
+		mi := &file_api_v1_memo_service_proto_msgTypes[22]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1154,7 +1400,7 @@ func (x *ListMemoCommentsRequest) String() string {
 func (*ListMemoCommentsRequest) ProtoMessage() {}
 
 func (x *ListMemoCommentsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[18]
+	mi := &file_api_v1_memo_service_proto_msgTypes[22]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1167,7 +1413,7 @@ func (x *ListMemoCommentsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoCommentsRequest.ProtoReflect.Descriptor instead.
 func (*ListMemoCommentsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{18}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{22}
 }
 
 func (x *ListMemoCommentsRequest) GetName() string {
@@ -1188,7 +1434,7 @@ type ListMemoCommentsResponse struct {
 func (x *ListMemoCommentsResponse) Reset() {
 	*x = ListMemoCommentsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[19]
+		mi := &file_api_v1_memo_service_proto_msgTypes[23]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1201,7 +1447,7 @@ func (x *ListMemoCommentsResponse) String() string {
 func (*ListMemoCommentsResponse) ProtoMessage() {}
 
 func (x *ListMemoCommentsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[19]
+	mi := &file_api_v1_memo_service_proto_msgTypes[23]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1214,7 +1460,7 @@ func (x *ListMemoCommentsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoCommentsResponse.ProtoReflect.Descriptor instead.
 func (*ListMemoCommentsResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{19}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{23}
 }
 
 func (x *ListMemoCommentsResponse) GetMemos() []*Memo {
@@ -1243,7 +1489,7 @@ type GetUserMemosStatsRequest struct {
 func (x *GetUserMemosStatsRequest) Reset() {
 	*x = GetUserMemosStatsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[20]
+		mi := &file_api_v1_memo_service_proto_msgTypes[24]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1256,7 +1502,7 @@ func (x *GetUserMemosStatsRequest) String() string {
 func (*GetUserMemosStatsRequest) ProtoMessage() {}
 
 func (x *GetUserMemosStatsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[20]
+	mi := &file_api_v1_memo_service_proto_msgTypes[24]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1269,7 +1515,7 @@ func (x *GetUserMemosStatsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetUserMemosStatsRequest.ProtoReflect.Descriptor instead.
 func (*GetUserMemosStatsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{20}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{24}
 }
 
 func (x *GetUserMemosStatsRequest) GetName() string {
@@ -1306,7 +1552,7 @@ type GetUserMemosStatsResponse struct {
 func (x *GetUserMemosStatsResponse) Reset() {
 	*x = GetUserMemosStatsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[21]
+		mi := &file_api_v1_memo_service_proto_msgTypes[25]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1319,7 +1565,7 @@ func (x *GetUserMemosStatsResponse) String() string {
 func (*GetUserMemosStatsResponse) ProtoMessage() {}
 
 func (x *GetUserMemosStatsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[21]
+	mi := &file_api_v1_memo_service_proto_msgTypes[25]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1332,7 +1578,7 @@ func (x *GetUserMemosStatsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use GetUserMemosStatsResponse.ProtoReflect.Descriptor instead.
 func (*GetUserMemosStatsResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{21}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{25}
 }
 
 func (x *GetUserMemosStatsResponse) GetStats() map[string]int32 {
@@ -1355,7 +1601,7 @@ type ListMemoReactionsRequest struct {
 func (x *ListMemoReactionsRequest) Reset() {
 	*x = ListMemoReactionsRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[22]
+		mi := &file_api_v1_memo_service_proto_msgTypes[26]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1368,7 +1614,7 @@ func (x *ListMemoReactionsRequest) String() string {
 func (*ListMemoReactionsRequest) ProtoMessage() {}
 
 func (x *ListMemoReactionsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[22]
+	mi := &file_api_v1_memo_service_proto_msgTypes[26]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1381,7 +1627,7 @@ func (x *ListMemoReactionsRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoReactionsRequest.ProtoReflect.Descriptor instead.
 func (*ListMemoReactionsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{22}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{26}
 }
 
 func (x *ListMemoReactionsRequest) GetName() string {
@@ -1402,7 +1648,7 @@ type ListMemoReactionsResponse struct {
 func (x *ListMemoReactionsResponse) Reset() {
 	*x = ListMemoReactionsResponse{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[23]
+		mi := &file_api_v1_memo_service_proto_msgTypes[27]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1415,7 +1661,7 @@ func (x *ListMemoReactionsResponse) String() string {
 func (*ListMemoReactionsResponse) ProtoMessage() {}
 
 func (x *ListMemoReactionsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[23]
+	mi := &file_api_v1_memo_service_proto_msgTypes[27]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1428,7 +1674,7 @@ func (x *ListMemoReactionsResponse) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ListMemoReactionsResponse.ProtoReflect.Descriptor instead.
 func (*ListMemoReactionsResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{23}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{27}
 }
 
 func (x *ListMemoReactionsResponse) GetReactions() []*Reaction {
@@ -1452,7 +1698,7 @@ type UpsertMemoReactionRequest struct {
 func (x *UpsertMemoReactionRequest) Reset() {
 	*x = UpsertMemoReactionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[24]
+		mi := &file_api_v1_memo_service_proto_msgTypes[28]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1465,7 +1711,7 @@ func (x *UpsertMemoReactionRequest) String() string {
 func (*UpsertMemoReactionRequest) ProtoMessage() {}
 
 func (x *UpsertMemoReactionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[24]
+	mi := &file_api_v1_memo_service_proto_msgTypes[28]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1478,7 +1724,7 @@ func (x *UpsertMemoReactionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use UpsertMemoReactionRequest.ProtoReflect.Descriptor instead.
 func (*UpsertMemoReactionRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{24}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{28}
 }
 
 func (x *UpsertMemoReactionRequest) GetName() string {
@@ -1506,7 +1752,7 @@ type DeleteMemoReactionRequest struct {
 func (x *DeleteMemoReactionRequest) Reset() {
 	*x = DeleteMemoReactionRequest{}
 	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_memo_service_proto_msgTypes[25]
+		mi := &file_api_v1_memo_service_proto_msgTypes[29]
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		ms.StoreMessageInfo(mi)
 	}
@@ -1519,7 +1765,7 @@ func (x *DeleteMemoReactionRequest) String() string {
 func (*DeleteMemoReactionRequest) ProtoMessage() {}
 
 func (x *DeleteMemoReactionRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_memo_service_proto_msgTypes[25]
+	mi := &file_api_v1_memo_service_proto_msgTypes[29]
 	if protoimpl.UnsafeEnabled && x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -1532,7 +1778,7 @@ func (x *DeleteMemoReactionRequest) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use DeleteMemoReactionRequest.ProtoReflect.Descriptor instead.
 func (*DeleteMemoReactionRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{25}
+	return file_api_v1_memo_service_proto_rawDescGZIP(), []int{29}
 }
 
 func (x *DeleteMemoReactionRequest) GetReactionId() int32 {
@@ -1568,7 +1814,7 @@ var file_api_v1_memo_service_proto_rawDesc = []byte{
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 }
 
 var (
@@ -1906,7 +2206,7 @@ func file_api_v1_memo_service_proto_rawDescGZIP() []byte {
 }
 
 var file_api_v1_memo_service_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_api_v1_memo_service_proto_msgTypes = make([]protoimpl.MessageInfo, 27)
+var file_api_v1_memo_service_proto_msgTypes = make([]protoimpl.MessageInfo, 32)
 var file_api_v1_memo_service_proto_goTypes = []interface{}{
 	(Visibility)(0),                   // 0: memos.api.v1.Visibility
 	(*Memo)(nil),                      // 1: memos.api.v1.Memo
@@ -1920,94 +2220,106 @@ var file_api_v1_memo_service_proto_goTypes = []interface{}{
 	(*DeleteMemoRequest)(nil),         // 9: memos.api.v1.DeleteMemoRequest
 	(*ExportMemosRequest)(nil),        // 10: memos.api.v1.ExportMemosRequest
 	(*ExportMemosResponse)(nil),       // 11: memos.api.v1.ExportMemosResponse
-	(*SetMemoResourcesRequest)(nil),   // 12: memos.api.v1.SetMemoResourcesRequest
-	(*ListMemoResourcesRequest)(nil),  // 13: memos.api.v1.ListMemoResourcesRequest
-	(*ListMemoResourcesResponse)(nil), // 14: memos.api.v1.ListMemoResourcesResponse
-	(*SetMemoRelationsRequest)(nil),   // 15: memos.api.v1.SetMemoRelationsRequest
-	(*ListMemoRelationsRequest)(nil),  // 16: memos.api.v1.ListMemoRelationsRequest
-	(*ListMemoRelationsResponse)(nil), // 17: memos.api.v1.ListMemoRelationsResponse
-	(*CreateMemoCommentRequest)(nil),  // 18: memos.api.v1.CreateMemoCommentRequest
-	(*ListMemoCommentsRequest)(nil),   // 19: memos.api.v1.ListMemoCommentsRequest
-	(*ListMemoCommentsResponse)(nil),  // 20: memos.api.v1.ListMemoCommentsResponse
-	(*GetUserMemosStatsRequest)(nil),  // 21: memos.api.v1.GetUserMemosStatsRequest
-	(*GetUserMemosStatsResponse)(nil), // 22: memos.api.v1.GetUserMemosStatsResponse
-	(*ListMemoReactionsRequest)(nil),  // 23: memos.api.v1.ListMemoReactionsRequest
-	(*ListMemoReactionsResponse)(nil), // 24: memos.api.v1.ListMemoReactionsResponse
-	(*UpsertMemoReactionRequest)(nil), // 25: memos.api.v1.UpsertMemoReactionRequest
-	(*DeleteMemoReactionRequest)(nil), // 26: memos.api.v1.DeleteMemoReactionRequest
-	nil,                               // 27: memos.api.v1.GetUserMemosStatsResponse.StatsEntry
-	(RowStatus)(0),                    // 28: memos.api.v1.RowStatus
-	(*timestamppb.Timestamp)(nil),     // 29: google.protobuf.Timestamp
-	(*Node)(nil),                      // 30: memos.api.v1.Node
-	(*Resource)(nil),                  // 31: memos.api.v1.Resource
-	(*MemoRelation)(nil),              // 32: memos.api.v1.MemoRelation
-	(*Reaction)(nil),                  // 33: memos.api.v1.Reaction
-	(*fieldmaskpb.FieldMask)(nil),     // 34: google.protobuf.FieldMask
-	(*emptypb.Empty)(nil),             // 35: google.protobuf.Empty
+	(*ListMemoTagsRequest)(nil),       // 12: memos.api.v1.ListMemoTagsRequest
+	(*ListMemoTagsResponse)(nil),      // 13: memos.api.v1.ListMemoTagsResponse
+	(*RenameMemoTagRequest)(nil),      // 14: memos.api.v1.RenameMemoTagRequest
+	(*DeleteMemoTagRequest)(nil),      // 15: memos.api.v1.DeleteMemoTagRequest
+	(*SetMemoResourcesRequest)(nil),   // 16: memos.api.v1.SetMemoResourcesRequest
+	(*ListMemoResourcesRequest)(nil),  // 17: memos.api.v1.ListMemoResourcesRequest
+	(*ListMemoResourcesResponse)(nil), // 18: memos.api.v1.ListMemoResourcesResponse
+	(*SetMemoRelationsRequest)(nil),   // 19: memos.api.v1.SetMemoRelationsRequest
+	(*ListMemoRelationsRequest)(nil),  // 20: memos.api.v1.ListMemoRelationsRequest
+	(*ListMemoRelationsResponse)(nil), // 21: memos.api.v1.ListMemoRelationsResponse
+	(*CreateMemoCommentRequest)(nil),  // 22: memos.api.v1.CreateMemoCommentRequest
+	(*ListMemoCommentsRequest)(nil),   // 23: memos.api.v1.ListMemoCommentsRequest
+	(*ListMemoCommentsResponse)(nil),  // 24: memos.api.v1.ListMemoCommentsResponse
+	(*GetUserMemosStatsRequest)(nil),  // 25: memos.api.v1.GetUserMemosStatsRequest
+	(*GetUserMemosStatsResponse)(nil), // 26: memos.api.v1.GetUserMemosStatsResponse
+	(*ListMemoReactionsRequest)(nil),  // 27: memos.api.v1.ListMemoReactionsRequest
+	(*ListMemoReactionsResponse)(nil), // 28: memos.api.v1.ListMemoReactionsResponse
+	(*UpsertMemoReactionRequest)(nil), // 29: memos.api.v1.UpsertMemoReactionRequest
+	(*DeleteMemoReactionRequest)(nil), // 30: memos.api.v1.DeleteMemoReactionRequest
+	nil,                               // 31: memos.api.v1.ListMemoTagsResponse.TagAmountsEntry
+	nil,                               // 32: memos.api.v1.GetUserMemosStatsResponse.StatsEntry
+	(RowStatus)(0),                    // 33: memos.api.v1.RowStatus
+	(*timestamppb.Timestamp)(nil),     // 34: google.protobuf.Timestamp
+	(*Node)(nil),                      // 35: memos.api.v1.Node
+	(*Resource)(nil),                  // 36: memos.api.v1.Resource
+	(*MemoRelation)(nil),              // 37: memos.api.v1.MemoRelation
+	(*Reaction)(nil),                  // 38: memos.api.v1.Reaction
+	(*fieldmaskpb.FieldMask)(nil),     // 39: google.protobuf.FieldMask
+	(*emptypb.Empty)(nil),             // 40: google.protobuf.Empty
 }
 var file_api_v1_memo_service_proto_depIdxs = []int32{
-	28, // 0: memos.api.v1.Memo.row_status:type_name -> memos.api.v1.RowStatus
-	29, // 1: memos.api.v1.Memo.create_time:type_name -> google.protobuf.Timestamp
-	29, // 2: memos.api.v1.Memo.update_time:type_name -> google.protobuf.Timestamp
-	29, // 3: memos.api.v1.Memo.display_time:type_name -> google.protobuf.Timestamp
-	30, // 4: memos.api.v1.Memo.nodes:type_name -> memos.api.v1.Node
+	33, // 0: memos.api.v1.Memo.row_status:type_name -> memos.api.v1.RowStatus
+	34, // 1: memos.api.v1.Memo.create_time:type_name -> google.protobuf.Timestamp
+	34, // 2: memos.api.v1.Memo.update_time:type_name -> google.protobuf.Timestamp
+	34, // 3: memos.api.v1.Memo.display_time:type_name -> google.protobuf.Timestamp
+	35, // 4: memos.api.v1.Memo.nodes:type_name -> memos.api.v1.Node
 	0,  // 5: memos.api.v1.Memo.visibility:type_name -> memos.api.v1.Visibility
-	31, // 6: memos.api.v1.Memo.resources:type_name -> memos.api.v1.Resource
-	32, // 7: memos.api.v1.Memo.relations:type_name -> memos.api.v1.MemoRelation
-	33, // 8: memos.api.v1.Memo.reactions:type_name -> memos.api.v1.Reaction
+	36, // 6: memos.api.v1.Memo.resources:type_name -> memos.api.v1.Resource
+	37, // 7: memos.api.v1.Memo.relations:type_name -> memos.api.v1.MemoRelation
+	38, // 8: memos.api.v1.Memo.reactions:type_name -> memos.api.v1.Reaction
 	0,  // 9: memos.api.v1.CreateMemoRequest.visibility:type_name -> memos.api.v1.Visibility
 	1,  // 10: memos.api.v1.ListMemosResponse.memos:type_name -> memos.api.v1.Memo
 	1,  // 11: memos.api.v1.SearchMemosResponse.memos:type_name -> memos.api.v1.Memo
 	1,  // 12: memos.api.v1.UpdateMemoRequest.memo:type_name -> memos.api.v1.Memo
-	34, // 13: memos.api.v1.UpdateMemoRequest.update_mask:type_name -> google.protobuf.FieldMask
-	31, // 14: memos.api.v1.SetMemoResourcesRequest.resources:type_name -> memos.api.v1.Resource
-	31, // 15: memos.api.v1.ListMemoResourcesResponse.resources:type_name -> memos.api.v1.Resource
-	32, // 16: memos.api.v1.SetMemoRelationsRequest.relations:type_name -> memos.api.v1.MemoRelation
-	32, // 17: memos.api.v1.ListMemoRelationsResponse.relations:type_name -> memos.api.v1.MemoRelation
-	2,  // 18: memos.api.v1.CreateMemoCommentRequest.comment:type_name -> memos.api.v1.CreateMemoRequest
-	1,  // 19: memos.api.v1.ListMemoCommentsResponse.memos:type_name -> memos.api.v1.Memo
-	27, // 20: memos.api.v1.GetUserMemosStatsResponse.stats:type_name -> memos.api.v1.GetUserMemosStatsResponse.StatsEntry
-	33, // 21: memos.api.v1.ListMemoReactionsResponse.reactions:type_name -> memos.api.v1.Reaction
-	33, // 22: memos.api.v1.UpsertMemoReactionRequest.reaction:type_name -> memos.api.v1.Reaction
-	2,  // 23: memos.api.v1.MemoService.CreateMemo:input_type -> memos.api.v1.CreateMemoRequest
-	3,  // 24: memos.api.v1.MemoService.ListMemos:input_type -> memos.api.v1.ListMemosRequest
-	5,  // 25: memos.api.v1.MemoService.SearchMemos:input_type -> memos.api.v1.SearchMemosRequest
-	7,  // 26: memos.api.v1.MemoService.GetMemo:input_type -> memos.api.v1.GetMemoRequest
-	8,  // 27: memos.api.v1.MemoService.UpdateMemo:input_type -> memos.api.v1.UpdateMemoRequest
-	9,  // 28: memos.api.v1.MemoService.DeleteMemo:input_type -> memos.api.v1.DeleteMemoRequest
-	10, // 29: memos.api.v1.MemoService.ExportMemos:input_type -> memos.api.v1.ExportMemosRequest
-	12, // 30: memos.api.v1.MemoService.SetMemoResources:input_type -> memos.api.v1.SetMemoResourcesRequest
-	13, // 31: memos.api.v1.MemoService.ListMemoResources:input_type -> memos.api.v1.ListMemoResourcesRequest
-	15, // 32: memos.api.v1.MemoService.SetMemoRelations:input_type -> memos.api.v1.SetMemoRelationsRequest
-	16, // 33: memos.api.v1.MemoService.ListMemoRelations:input_type -> memos.api.v1.ListMemoRelationsRequest
-	18, // 34: memos.api.v1.MemoService.CreateMemoComment:input_type -> memos.api.v1.CreateMemoCommentRequest
-	19, // 35: memos.api.v1.MemoService.ListMemoComments:input_type -> memos.api.v1.ListMemoCommentsRequest
-	21, // 36: memos.api.v1.MemoService.GetUserMemosStats:input_type -> memos.api.v1.GetUserMemosStatsRequest
-	23, // 37: memos.api.v1.MemoService.ListMemoReactions:input_type -> memos.api.v1.ListMemoReactionsRequest
-	25, // 38: memos.api.v1.MemoService.UpsertMemoReaction:input_type -> memos.api.v1.UpsertMemoReactionRequest
-	26, // 39: memos.api.v1.MemoService.DeleteMemoReaction:input_type -> memos.api.v1.DeleteMemoReactionRequest
-	1,  // 40: memos.api.v1.MemoService.CreateMemo:output_type -> memos.api.v1.Memo
-	4,  // 41: memos.api.v1.MemoService.ListMemos:output_type -> memos.api.v1.ListMemosResponse
-	6,  // 42: memos.api.v1.MemoService.SearchMemos:output_type -> memos.api.v1.SearchMemosResponse
-	1,  // 43: memos.api.v1.MemoService.GetMemo:output_type -> memos.api.v1.Memo
-	1,  // 44: memos.api.v1.MemoService.UpdateMemo:output_type -> memos.api.v1.Memo
-	35, // 45: memos.api.v1.MemoService.DeleteMemo:output_type -> google.protobuf.Empty
-	11, // 46: memos.api.v1.MemoService.ExportMemos:output_type -> memos.api.v1.ExportMemosResponse
-	35, // 47: memos.api.v1.MemoService.SetMemoResources:output_type -> google.protobuf.Empty
-	14, // 48: memos.api.v1.MemoService.ListMemoResources:output_type -> memos.api.v1.ListMemoResourcesResponse
-	35, // 49: memos.api.v1.MemoService.SetMemoRelations:output_type -> google.protobuf.Empty
-	17, // 50: memos.api.v1.MemoService.ListMemoRelations:output_type -> memos.api.v1.ListMemoRelationsResponse
-	1,  // 51: memos.api.v1.MemoService.CreateMemoComment:output_type -> memos.api.v1.Memo
-	20, // 52: memos.api.v1.MemoService.ListMemoComments:output_type -> memos.api.v1.ListMemoCommentsResponse
-	22, // 53: memos.api.v1.MemoService.GetUserMemosStats:output_type -> memos.api.v1.GetUserMemosStatsResponse
-	24, // 54: memos.api.v1.MemoService.ListMemoReactions:output_type -> memos.api.v1.ListMemoReactionsResponse
-	33, // 55: memos.api.v1.MemoService.UpsertMemoReaction:output_type -> memos.api.v1.Reaction
-	35, // 56: memos.api.v1.MemoService.DeleteMemoReaction:output_type -> google.protobuf.Empty
-	40, // [40:57] is the sub-list for method output_type
-	23, // [23:40] is the sub-list for method input_type
-	23, // [23:23] is the sub-list for extension type_name
-	23, // [23:23] is the sub-list for extension extendee
-	0,  // [0:23] is the sub-list for field type_name
+	39, // 13: memos.api.v1.UpdateMemoRequest.update_mask:type_name -> google.protobuf.FieldMask
+	31, // 14: memos.api.v1.ListMemoTagsResponse.tag_amounts:type_name -> memos.api.v1.ListMemoTagsResponse.TagAmountsEntry
+	36, // 15: memos.api.v1.SetMemoResourcesRequest.resources:type_name -> memos.api.v1.Resource
+	36, // 16: memos.api.v1.ListMemoResourcesResponse.resources:type_name -> memos.api.v1.Resource
+	37, // 17: memos.api.v1.SetMemoRelationsRequest.relations:type_name -> memos.api.v1.MemoRelation
+	37, // 18: memos.api.v1.ListMemoRelationsResponse.relations:type_name -> memos.api.v1.MemoRelation
+	2,  // 19: memos.api.v1.CreateMemoCommentRequest.comment:type_name -> memos.api.v1.CreateMemoRequest
+	1,  // 20: memos.api.v1.ListMemoCommentsResponse.memos:type_name -> memos.api.v1.Memo
+	32, // 21: memos.api.v1.GetUserMemosStatsResponse.stats:type_name -> memos.api.v1.GetUserMemosStatsResponse.StatsEntry
+	38, // 22: memos.api.v1.ListMemoReactionsResponse.reactions:type_name -> memos.api.v1.Reaction
+	38, // 23: memos.api.v1.UpsertMemoReactionRequest.reaction:type_name -> memos.api.v1.Reaction
+	2,  // 24: memos.api.v1.MemoService.CreateMemo:input_type -> memos.api.v1.CreateMemoRequest
+	3,  // 25: memos.api.v1.MemoService.ListMemos:input_type -> memos.api.v1.ListMemosRequest
+	5,  // 26: memos.api.v1.MemoService.SearchMemos:input_type -> memos.api.v1.SearchMemosRequest
+	7,  // 27: memos.api.v1.MemoService.GetMemo:input_type -> memos.api.v1.GetMemoRequest
+	8,  // 28: memos.api.v1.MemoService.UpdateMemo:input_type -> memos.api.v1.UpdateMemoRequest
+	9,  // 29: memos.api.v1.MemoService.DeleteMemo:input_type -> memos.api.v1.DeleteMemoRequest
+	10, // 30: memos.api.v1.MemoService.ExportMemos:input_type -> memos.api.v1.ExportMemosRequest
+	12, // 31: memos.api.v1.MemoService.ListMemoTags:input_type -> memos.api.v1.ListMemoTagsRequest
+	14, // 32: memos.api.v1.MemoService.RenameMemoTag:input_type -> memos.api.v1.RenameMemoTagRequest
+	15, // 33: memos.api.v1.MemoService.DeleteMemoTag:input_type -> memos.api.v1.DeleteMemoTagRequest
+	16, // 34: memos.api.v1.MemoService.SetMemoResources:input_type -> memos.api.v1.SetMemoResourcesRequest
+	17, // 35: memos.api.v1.MemoService.ListMemoResources:input_type -> memos.api.v1.ListMemoResourcesRequest
+	19, // 36: memos.api.v1.MemoService.SetMemoRelations:input_type -> memos.api.v1.SetMemoRelationsRequest
+	20, // 37: memos.api.v1.MemoService.ListMemoRelations:input_type -> memos.api.v1.ListMemoRelationsRequest
+	22, // 38: memos.api.v1.MemoService.CreateMemoComment:input_type -> memos.api.v1.CreateMemoCommentRequest
+	23, // 39: memos.api.v1.MemoService.ListMemoComments:input_type -> memos.api.v1.ListMemoCommentsRequest
+	25, // 40: memos.api.v1.MemoService.GetUserMemosStats:input_type -> memos.api.v1.GetUserMemosStatsRequest
+	27, // 41: memos.api.v1.MemoService.ListMemoReactions:input_type -> memos.api.v1.ListMemoReactionsRequest
+	29, // 42: memos.api.v1.MemoService.UpsertMemoReaction:input_type -> memos.api.v1.UpsertMemoReactionRequest
+	30, // 43: memos.api.v1.MemoService.DeleteMemoReaction:input_type -> memos.api.v1.DeleteMemoReactionRequest
+	1,  // 44: memos.api.v1.MemoService.CreateMemo:output_type -> memos.api.v1.Memo
+	4,  // 45: memos.api.v1.MemoService.ListMemos:output_type -> memos.api.v1.ListMemosResponse
+	6,  // 46: memos.api.v1.MemoService.SearchMemos:output_type -> memos.api.v1.SearchMemosResponse
+	1,  // 47: memos.api.v1.MemoService.GetMemo:output_type -> memos.api.v1.Memo
+	1,  // 48: memos.api.v1.MemoService.UpdateMemo:output_type -> memos.api.v1.Memo
+	40, // 49: memos.api.v1.MemoService.DeleteMemo:output_type -> google.protobuf.Empty
+	11, // 50: memos.api.v1.MemoService.ExportMemos:output_type -> memos.api.v1.ExportMemosResponse
+	13, // 51: memos.api.v1.MemoService.ListMemoTags:output_type -> memos.api.v1.ListMemoTagsResponse
+	40, // 52: memos.api.v1.MemoService.RenameMemoTag:output_type -> google.protobuf.Empty
+	40, // 53: memos.api.v1.MemoService.DeleteMemoTag:output_type -> google.protobuf.Empty
+	40, // 54: memos.api.v1.MemoService.SetMemoResources:output_type -> google.protobuf.Empty
+	18, // 55: memos.api.v1.MemoService.ListMemoResources:output_type -> memos.api.v1.ListMemoResourcesResponse
+	40, // 56: memos.api.v1.MemoService.SetMemoRelations:output_type -> google.protobuf.Empty
+	21, // 57: memos.api.v1.MemoService.ListMemoRelations:output_type -> memos.api.v1.ListMemoRelationsResponse
+	1,  // 58: memos.api.v1.MemoService.CreateMemoComment:output_type -> memos.api.v1.Memo
+	24, // 59: memos.api.v1.MemoService.ListMemoComments:output_type -> memos.api.v1.ListMemoCommentsResponse
+	26, // 60: memos.api.v1.MemoService.GetUserMemosStats:output_type -> memos.api.v1.GetUserMemosStatsResponse
+	28, // 61: memos.api.v1.MemoService.ListMemoReactions:output_type -> memos.api.v1.ListMemoReactionsResponse
+	38, // 62: memos.api.v1.MemoService.UpsertMemoReaction:output_type -> memos.api.v1.Reaction
+	40, // 63: memos.api.v1.MemoService.DeleteMemoReaction:output_type -> google.protobuf.Empty
+	44, // [44:64] is the sub-list for method output_type
+	24, // [24:44] is the sub-list for method input_type
+	24, // [24:24] is the sub-list for extension type_name
+	24, // [24:24] is the sub-list for extension extendee
+	0,  // [0:24] is the sub-list for field type_name
 }
 
 func init() { file_api_v1_memo_service_proto_init() }
@@ -2154,7 +2466,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[11].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SetMemoResourcesRequest); i {
+			switch v := v.(*ListMemoTagsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2166,7 +2478,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[12].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoResourcesRequest); i {
+			switch v := v.(*ListMemoTagsResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2178,7 +2490,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[13].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoResourcesResponse); i {
+			switch v := v.(*RenameMemoTagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2190,7 +2502,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[14].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*SetMemoRelationsRequest); i {
+			switch v := v.(*DeleteMemoTagRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2202,7 +2514,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[15].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoRelationsRequest); i {
+			switch v := v.(*SetMemoResourcesRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2214,7 +2526,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[16].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoRelationsResponse); i {
+			switch v := v.(*ListMemoResourcesRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2226,7 +2538,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[17].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*CreateMemoCommentRequest); i {
+			switch v := v.(*ListMemoResourcesResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2238,7 +2550,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[18].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoCommentsRequest); i {
+			switch v := v.(*SetMemoRelationsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2250,7 +2562,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[19].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoCommentsResponse); i {
+			switch v := v.(*ListMemoRelationsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2262,7 +2574,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[20].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetUserMemosStatsRequest); i {
+			switch v := v.(*ListMemoRelationsResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2274,7 +2586,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[21].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetUserMemosStatsResponse); i {
+			switch v := v.(*CreateMemoCommentRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2286,7 +2598,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[22].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoReactionsRequest); i {
+			switch v := v.(*ListMemoCommentsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2298,7 +2610,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[23].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListMemoReactionsResponse); i {
+			switch v := v.(*ListMemoCommentsResponse); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2310,7 +2622,7 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[24].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpsertMemoReactionRequest); i {
+			switch v := v.(*GetUserMemosStatsRequest); i {
 			case 0:
 				return &v.state
 			case 1:
@@ -2322,6 +2634,54 @@ func file_api_v1_memo_service_proto_init() {
 			}
 		}
 		file_api_v1_memo_service_proto_msgTypes[25].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GetUserMemosStatsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_v1_memo_service_proto_msgTypes[26].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListMemoReactionsRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_v1_memo_service_proto_msgTypes[27].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*ListMemoReactionsResponse); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_v1_memo_service_proto_msgTypes[28].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*UpsertMemoReactionRequest); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_api_v1_memo_service_proto_msgTypes[29].Exporter = func(v interface{}, i int) interface{} {
 			switch v := v.(*DeleteMemoReactionRequest); i {
 			case 0:
 				return &v.state
@@ -2341,7 +2701,7 @@ func file_api_v1_memo_service_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_api_v1_memo_service_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   27,
+			NumMessages:   32,
 			NumExtensions: 0,
 			NumServices:   1,
 		},
diff --git a/proto/gen/api/v1/memo_service.pb.gw.go b/proto/gen/api/v1/memo_service.pb.gw.go
index 0251ccd9..af125893 100644
--- a/proto/gen/api/v1/memo_service.pb.gw.go
+++ b/proto/gen/api/v1/memo_service.pb.gw.go
@@ -359,6 +359,226 @@ func local_request_MemoService_ExportMemos_0(ctx context.Context, marshaler runt
 
 }
 
+var (
+	filter_MemoService_ListMemoTags_0 = &utilities.DoubleArray{Encoding: map[string]int{"parent": 0}, Base: []int{1, 1, 0}, Check: []int{0, 1, 2}}
+)
+
+func request_MemoService_ListMemoTags_0(ctx context.Context, marshaler runtime.Marshaler, client MemoServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq ListMemoTagsRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["parent"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "parent")
+	}
+
+	protoReq.Parent, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "parent", err)
+	}
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_MemoService_ListMemoTags_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := client.ListMemoTags(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_MemoService_ListMemoTags_0(ctx context.Context, marshaler runtime.Marshaler, server MemoServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq ListMemoTagsRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["parent"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "parent")
+	}
+
+	protoReq.Parent, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "parent", err)
+	}
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_MemoService_ListMemoTags_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := server.ListMemoTags(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+func request_MemoService_RenameMemoTag_0(ctx context.Context, marshaler runtime.Marshaler, client MemoServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq RenameMemoTagRequest
+	var metadata runtime.ServerMetadata
+
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["parent"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "parent")
+	}
+
+	protoReq.Parent, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "parent", err)
+	}
+
+	msg, err := client.RenameMemoTag(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_MemoService_RenameMemoTag_0(ctx context.Context, marshaler runtime.Marshaler, server MemoServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq RenameMemoTagRequest
+	var metadata runtime.ServerMetadata
+
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["parent"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "parent")
+	}
+
+	protoReq.Parent, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "parent", err)
+	}
+
+	msg, err := server.RenameMemoTag(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
+var (
+	filter_MemoService_DeleteMemoTag_0 = &utilities.DoubleArray{Encoding: map[string]int{"parent": 0, "tag": 1}, Base: []int{1, 1, 2, 0, 0}, Check: []int{0, 1, 1, 2, 3}}
+)
+
+func request_MemoService_DeleteMemoTag_0(ctx context.Context, marshaler runtime.Marshaler, client MemoServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq DeleteMemoTagRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["parent"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "parent")
+	}
+
+	protoReq.Parent, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "parent", err)
+	}
+
+	val, ok = pathParams["tag"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "tag")
+	}
+
+	protoReq.Tag, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "tag", err)
+	}
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_MemoService_DeleteMemoTag_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := client.DeleteMemoTag(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+
+}
+
+func local_request_MemoService_DeleteMemoTag_0(ctx context.Context, marshaler runtime.Marshaler, server MemoServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var protoReq DeleteMemoTagRequest
+	var metadata runtime.ServerMetadata
+
+	var (
+		val string
+		ok  bool
+		err error
+		_   = err
+	)
+
+	val, ok = pathParams["parent"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "parent")
+	}
+
+	protoReq.Parent, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "parent", err)
+	}
+
+	val, ok = pathParams["tag"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "tag")
+	}
+
+	protoReq.Tag, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "tag", err)
+	}
+
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_MemoService_DeleteMemoTag_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+
+	msg, err := server.DeleteMemoTag(ctx, &protoReq)
+	return msg, metadata, err
+
+}
+
 func request_MemoService_SetMemoResources_0(ctx context.Context, marshaler runtime.Marshaler, client MemoServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
 	var protoReq SetMemoResourcesRequest
 	var metadata runtime.ServerMetadata
@@ -1076,6 +1296,81 @@ func RegisterMemoServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux
 
 	})
 
+	mux.Handle("GET", pattern_MemoService_ListMemoTags_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.MemoService/ListMemoTags", runtime.WithHTTPPathPattern("/api/v1/{parent=memos/*}/tags"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_MemoService_ListMemoTags_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_MemoService_ListMemoTags_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("PATCH", pattern_MemoService_RenameMemoTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.MemoService/RenameMemoTag", runtime.WithHTTPPathPattern("/api/v1/{parent=memos/*}/tags:rename"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_MemoService_RenameMemoTag_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_MemoService_RenameMemoTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("DELETE", pattern_MemoService_DeleteMemoTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.MemoService/DeleteMemoTag", runtime.WithHTTPPathPattern("/api/v1/{parent=memos/*}/tags/{tag}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_MemoService_DeleteMemoTag_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_MemoService_DeleteMemoTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("PATCH", pattern_MemoService_SetMemoResources_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1521,6 +1816,72 @@ func RegisterMemoServiceHandlerClient(ctx context.Context, mux *runtime.ServeMux
 
 	})
 
+	mux.Handle("GET", pattern_MemoService_ListMemoTags_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.MemoService/ListMemoTags", runtime.WithHTTPPathPattern("/api/v1/{parent=memos/*}/tags"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_MemoService_ListMemoTags_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_MemoService_ListMemoTags_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("PATCH", pattern_MemoService_RenameMemoTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.MemoService/RenameMemoTag", runtime.WithHTTPPathPattern("/api/v1/{parent=memos/*}/tags:rename"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_MemoService_RenameMemoTag_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_MemoService_RenameMemoTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
+	mux.Handle("DELETE", pattern_MemoService_DeleteMemoTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		var err error
+		var annotatedContext context.Context
+		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.MemoService/DeleteMemoTag", runtime.WithHTTPPathPattern("/api/v1/{parent=memos/*}/tags/{tag}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_MemoService_DeleteMemoTag_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+
+		forward_MemoService_DeleteMemoTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+
+	})
+
 	mux.Handle("PATCH", pattern_MemoService_SetMemoResources_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
 		ctx, cancel := context.WithCancel(req.Context())
 		defer cancel()
@@ -1759,6 +2120,12 @@ var (
 
 	pattern_MemoService_ExportMemos_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"api", "v1", "memos"}, "export"))
 
+	pattern_MemoService_ListMemoTags_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 2, 5, 3, 2, 4}, []string{"api", "v1", "memos", "parent", "tags"}, ""))
+
+	pattern_MemoService_RenameMemoTag_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 2, 5, 3, 2, 4}, []string{"api", "v1", "memos", "parent", "tags"}, "rename"))
+
+	pattern_MemoService_DeleteMemoTag_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 2, 5, 3, 2, 4, 1, 0, 4, 1, 5, 5}, []string{"api", "v1", "memos", "parent", "tags", "tag"}, ""))
+
 	pattern_MemoService_SetMemoResources_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 2, 5, 3, 2, 4}, []string{"api", "v1", "memos", "name", "resources"}, ""))
 
 	pattern_MemoService_ListMemoResources_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 1, 0, 4, 2, 5, 3, 2, 4}, []string{"api", "v1", "memos", "name", "resources"}, ""))
@@ -1795,6 +2162,12 @@ var (
 
 	forward_MemoService_ExportMemos_0 = runtime.ForwardResponseMessage
 
+	forward_MemoService_ListMemoTags_0 = runtime.ForwardResponseMessage
+
+	forward_MemoService_RenameMemoTag_0 = runtime.ForwardResponseMessage
+
+	forward_MemoService_DeleteMemoTag_0 = runtime.ForwardResponseMessage
+
 	forward_MemoService_SetMemoResources_0 = runtime.ForwardResponseMessage
 
 	forward_MemoService_ListMemoResources_0 = runtime.ForwardResponseMessage
diff --git a/proto/gen/api/v1/memo_service_grpc.pb.go b/proto/gen/api/v1/memo_service_grpc.pb.go
index 98831d42..896c8934 100644
--- a/proto/gen/api/v1/memo_service_grpc.pb.go
+++ b/proto/gen/api/v1/memo_service_grpc.pb.go
@@ -27,6 +27,9 @@ const (
 	MemoService_UpdateMemo_FullMethodName         = "/memos.api.v1.MemoService/UpdateMemo"
 	MemoService_DeleteMemo_FullMethodName         = "/memos.api.v1.MemoService/DeleteMemo"
 	MemoService_ExportMemos_FullMethodName        = "/memos.api.v1.MemoService/ExportMemos"
+	MemoService_ListMemoTags_FullMethodName       = "/memos.api.v1.MemoService/ListMemoTags"
+	MemoService_RenameMemoTag_FullMethodName      = "/memos.api.v1.MemoService/RenameMemoTag"
+	MemoService_DeleteMemoTag_FullMethodName      = "/memos.api.v1.MemoService/DeleteMemoTag"
 	MemoService_SetMemoResources_FullMethodName   = "/memos.api.v1.MemoService/SetMemoResources"
 	MemoService_ListMemoResources_FullMethodName  = "/memos.api.v1.MemoService/ListMemoResources"
 	MemoService_SetMemoRelations_FullMethodName   = "/memos.api.v1.MemoService/SetMemoRelations"
@@ -57,6 +60,12 @@ type MemoServiceClient interface {
 	DeleteMemo(ctx context.Context, in *DeleteMemoRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// ExportMemos exports memos.
 	ExportMemos(ctx context.Context, in *ExportMemosRequest, opts ...grpc.CallOption) (*ExportMemosResponse, error)
+	// ListMemoTags lists tags for a memo.
+	ListMemoTags(ctx context.Context, in *ListMemoTagsRequest, opts ...grpc.CallOption) (*ListMemoTagsResponse, error)
+	// RenameMemoTag renames a tag for a memo.
+	RenameMemoTag(ctx context.Context, in *RenameMemoTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
+	// DeleteMemoTag deletes a tag for a memo.
+	DeleteMemoTag(ctx context.Context, in *DeleteMemoTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// SetMemoResources sets resources for a memo.
 	SetMemoResources(ctx context.Context, in *SetMemoResourcesRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
 	// ListMemoResources lists resources for a memo.
@@ -150,6 +159,33 @@ func (c *memoServiceClient) ExportMemos(ctx context.Context, in *ExportMemosRequ
 	return out, nil
 }
 
+func (c *memoServiceClient) ListMemoTags(ctx context.Context, in *ListMemoTagsRequest, opts ...grpc.CallOption) (*ListMemoTagsResponse, error) {
+	out := new(ListMemoTagsResponse)
+	err := c.cc.Invoke(ctx, MemoService_ListMemoTags_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *memoServiceClient) RenameMemoTag(ctx context.Context, in *RenameMemoTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, MemoService_RenameMemoTag_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *memoServiceClient) DeleteMemoTag(ctx context.Context, in *DeleteMemoTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
+	out := new(emptypb.Empty)
+	err := c.cc.Invoke(ctx, MemoService_DeleteMemoTag_FullMethodName, in, out, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 func (c *memoServiceClient) SetMemoResources(ctx context.Context, in *SetMemoResourcesRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
 	out := new(emptypb.Empty)
 	err := c.cc.Invoke(ctx, MemoService_SetMemoResources_FullMethodName, in, out, opts...)
@@ -258,6 +294,12 @@ type MemoServiceServer interface {
 	DeleteMemo(context.Context, *DeleteMemoRequest) (*emptypb.Empty, error)
 	// ExportMemos exports memos.
 	ExportMemos(context.Context, *ExportMemosRequest) (*ExportMemosResponse, error)
+	// ListMemoTags lists tags for a memo.
+	ListMemoTags(context.Context, *ListMemoTagsRequest) (*ListMemoTagsResponse, error)
+	// RenameMemoTag renames a tag for a memo.
+	RenameMemoTag(context.Context, *RenameMemoTagRequest) (*emptypb.Empty, error)
+	// DeleteMemoTag deletes a tag for a memo.
+	DeleteMemoTag(context.Context, *DeleteMemoTagRequest) (*emptypb.Empty, error)
 	// SetMemoResources sets resources for a memo.
 	SetMemoResources(context.Context, *SetMemoResourcesRequest) (*emptypb.Empty, error)
 	// ListMemoResources lists resources for a memo.
@@ -306,6 +348,15 @@ func (UnimplementedMemoServiceServer) DeleteMemo(context.Context, *DeleteMemoReq
 func (UnimplementedMemoServiceServer) ExportMemos(context.Context, *ExportMemosRequest) (*ExportMemosResponse, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method ExportMemos not implemented")
 }
+func (UnimplementedMemoServiceServer) ListMemoTags(context.Context, *ListMemoTagsRequest) (*ListMemoTagsResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method ListMemoTags not implemented")
+}
+func (UnimplementedMemoServiceServer) RenameMemoTag(context.Context, *RenameMemoTagRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method RenameMemoTag not implemented")
+}
+func (UnimplementedMemoServiceServer) DeleteMemoTag(context.Context, *DeleteMemoTagRequest) (*emptypb.Empty, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method DeleteMemoTag not implemented")
+}
 func (UnimplementedMemoServiceServer) SetMemoResources(context.Context, *SetMemoResourcesRequest) (*emptypb.Empty, error) {
 	return nil, status.Errorf(codes.Unimplemented, "method SetMemoResources not implemented")
 }
@@ -475,6 +526,60 @@ func _MemoService_ExportMemos_Handler(srv interface{}, ctx context.Context, dec
 	return interceptor(ctx, in, info, handler)
 }
 
+func _MemoService_ListMemoTags_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(ListMemoTagsRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MemoServiceServer).ListMemoTags(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: MemoService_ListMemoTags_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MemoServiceServer).ListMemoTags(ctx, req.(*ListMemoTagsRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _MemoService_RenameMemoTag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RenameMemoTagRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MemoServiceServer).RenameMemoTag(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: MemoService_RenameMemoTag_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MemoServiceServer).RenameMemoTag(ctx, req.(*RenameMemoTagRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _MemoService_DeleteMemoTag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(DeleteMemoTagRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(MemoServiceServer).DeleteMemoTag(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: MemoService_DeleteMemoTag_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(MemoServiceServer).DeleteMemoTag(ctx, req.(*DeleteMemoTagRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 func _MemoService_SetMemoResources_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
 	in := new(SetMemoResourcesRequest)
 	if err := dec(in); err != nil {
@@ -690,6 +795,18 @@ var MemoService_ServiceDesc = grpc.ServiceDesc{
 			MethodName: "ExportMemos",
 			Handler:    _MemoService_ExportMemos_Handler,
 		},
+		{
+			MethodName: "ListMemoTags",
+			Handler:    _MemoService_ListMemoTags_Handler,
+		},
+		{
+			MethodName: "RenameMemoTag",
+			Handler:    _MemoService_RenameMemoTag_Handler,
+		},
+		{
+			MethodName: "DeleteMemoTag",
+			Handler:    _MemoService_DeleteMemoTag_Handler,
+		},
 		{
 			MethodName: "SetMemoResources",
 			Handler:    _MemoService_SetMemoResources_Handler,
diff --git a/proto/gen/api/v1/reaction_service.pb.go b/proto/gen/api/v1/reaction_service.pb.go
index 5b05d9a0..270d25d3 100644
--- a/proto/gen/api/v1/reaction_service.pb.go
+++ b/proto/gen/api/v1/reaction_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/reaction_service.proto
 
diff --git a/proto/gen/api/v1/resource_service.pb.go b/proto/gen/api/v1/resource_service.pb.go
index a0722a4d..ac66ed04 100644
--- a/proto/gen/api/v1/resource_service.pb.go
+++ b/proto/gen/api/v1/resource_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/resource_service.proto
 
diff --git a/proto/gen/api/v1/tag_service.pb.go b/proto/gen/api/v1/tag_service.pb.go
deleted file mode 100644
index 7b847976..00000000
--- a/proto/gen/api/v1/tag_service.pb.go
+++ /dev/null
@@ -1,745 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.34.0
-// 	protoc        (unknown)
-// source: api/v1/tag_service.proto
-
-package apiv1
-
-import (
-	_ "google.golang.org/genproto/googleapis/api/annotations"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	emptypb "google.golang.org/protobuf/types/known/emptypb"
-	reflect "reflect"
-	sync "sync"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-type Tag struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-	// The creator of tags.
-	// Format: users/{id}
-	Creator string `protobuf:"bytes,2,opt,name=creator,proto3" json:"creator,omitempty"`
-}
-
-func (x *Tag) Reset() {
-	*x = Tag{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *Tag) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Tag) ProtoMessage() {}
-
-func (x *Tag) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Tag.ProtoReflect.Descriptor instead.
-func (*Tag) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *Tag) GetName() string {
-	if x != nil {
-		return x.Name
-	}
-	return ""
-}
-
-func (x *Tag) GetCreator() string {
-	if x != nil {
-		return x.Creator
-	}
-	return ""
-}
-
-type UpsertTagRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
-}
-
-func (x *UpsertTagRequest) Reset() {
-	*x = UpsertTagRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *UpsertTagRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*UpsertTagRequest) ProtoMessage() {}
-
-func (x *UpsertTagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use UpsertTagRequest.ProtoReflect.Descriptor instead.
-func (*UpsertTagRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *UpsertTagRequest) GetName() string {
-	if x != nil {
-		return x.Name
-	}
-	return ""
-}
-
-type BatchUpsertTagRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Requests []*UpsertTagRequest `protobuf:"bytes,1,rep,name=requests,proto3" json:"requests,omitempty"`
-}
-
-func (x *BatchUpsertTagRequest) Reset() {
-	*x = BatchUpsertTagRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[2]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *BatchUpsertTagRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*BatchUpsertTagRequest) ProtoMessage() {}
-
-func (x *BatchUpsertTagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[2]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use BatchUpsertTagRequest.ProtoReflect.Descriptor instead.
-func (*BatchUpsertTagRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{2}
-}
-
-func (x *BatchUpsertTagRequest) GetRequests() []*UpsertTagRequest {
-	if x != nil {
-		return x.Requests
-	}
-	return nil
-}
-
-type ListTagsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-}
-
-func (x *ListTagsRequest) Reset() {
-	*x = ListTagsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[3]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListTagsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListTagsRequest) ProtoMessage() {}
-
-func (x *ListTagsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[3]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListTagsRequest.ProtoReflect.Descriptor instead.
-func (*ListTagsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{3}
-}
-
-type ListTagsResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Tags []*Tag `protobuf:"bytes,1,rep,name=tags,proto3" json:"tags,omitempty"`
-}
-
-func (x *ListTagsResponse) Reset() {
-	*x = ListTagsResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[4]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *ListTagsResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*ListTagsResponse) ProtoMessage() {}
-
-func (x *ListTagsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[4]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use ListTagsResponse.ProtoReflect.Descriptor instead.
-func (*ListTagsResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{4}
-}
-
-func (x *ListTagsResponse) GetTags() []*Tag {
-	if x != nil {
-		return x.Tags
-	}
-	return nil
-}
-
-type RenameTagRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// The creator of tags.
-	// Format: users/{id}
-	User    string `protobuf:"bytes,1,opt,name=user,proto3" json:"user,omitempty"`
-	OldName string `protobuf:"bytes,2,opt,name=old_name,json=oldName,proto3" json:"old_name,omitempty"`
-	NewName string `protobuf:"bytes,3,opt,name=new_name,json=newName,proto3" json:"new_name,omitempty"`
-}
-
-func (x *RenameTagRequest) Reset() {
-	*x = RenameTagRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[5]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *RenameTagRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*RenameTagRequest) ProtoMessage() {}
-
-func (x *RenameTagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[5]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use RenameTagRequest.ProtoReflect.Descriptor instead.
-func (*RenameTagRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{5}
-}
-
-func (x *RenameTagRequest) GetUser() string {
-	if x != nil {
-		return x.User
-	}
-	return ""
-}
-
-func (x *RenameTagRequest) GetOldName() string {
-	if x != nil {
-		return x.OldName
-	}
-	return ""
-}
-
-func (x *RenameTagRequest) GetNewName() string {
-	if x != nil {
-		return x.NewName
-	}
-	return ""
-}
-
-type DeleteTagRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Tag *Tag `protobuf:"bytes,1,opt,name=tag,proto3" json:"tag,omitempty"`
-}
-
-func (x *DeleteTagRequest) Reset() {
-	*x = DeleteTagRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[6]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *DeleteTagRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*DeleteTagRequest) ProtoMessage() {}
-
-func (x *DeleteTagRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[6]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use DeleteTagRequest.ProtoReflect.Descriptor instead.
-func (*DeleteTagRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{6}
-}
-
-func (x *DeleteTagRequest) GetTag() *Tag {
-	if x != nil {
-		return x.Tag
-	}
-	return nil
-}
-
-type GetTagSuggestionsRequest struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	// The creator of tags.
-	// Format: users/{id}
-	User string `protobuf:"bytes,1,opt,name=user,proto3" json:"user,omitempty"`
-}
-
-func (x *GetTagSuggestionsRequest) Reset() {
-	*x = GetTagSuggestionsRequest{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[7]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetTagSuggestionsRequest) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetTagSuggestionsRequest) ProtoMessage() {}
-
-func (x *GetTagSuggestionsRequest) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[7]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetTagSuggestionsRequest.ProtoReflect.Descriptor instead.
-func (*GetTagSuggestionsRequest) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{7}
-}
-
-func (x *GetTagSuggestionsRequest) GetUser() string {
-	if x != nil {
-		return x.User
-	}
-	return ""
-}
-
-type GetTagSuggestionsResponse struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	Tags []string `protobuf:"bytes,1,rep,name=tags,proto3" json:"tags,omitempty"`
-}
-
-func (x *GetTagSuggestionsResponse) Reset() {
-	*x = GetTagSuggestionsResponse{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_api_v1_tag_service_proto_msgTypes[8]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *GetTagSuggestionsResponse) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*GetTagSuggestionsResponse) ProtoMessage() {}
-
-func (x *GetTagSuggestionsResponse) ProtoReflect() protoreflect.Message {
-	mi := &file_api_v1_tag_service_proto_msgTypes[8]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use GetTagSuggestionsResponse.ProtoReflect.Descriptor instead.
-func (*GetTagSuggestionsResponse) Descriptor() ([]byte, []int) {
-	return file_api_v1_tag_service_proto_rawDescGZIP(), []int{8}
-}
-
-func (x *GetTagSuggestionsResponse) GetTags() []string {
-	if x != nil {
-		return x.Tags
-	}
-	return nil
-}
-
-var File_api_v1_tag_service_proto protoreflect.FileDescriptor
-
-var file_api_v1_tag_service_proto_rawDesc = []byte{
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-}
-
-var (
-	file_api_v1_tag_service_proto_rawDescOnce sync.Once
-	file_api_v1_tag_service_proto_rawDescData = file_api_v1_tag_service_proto_rawDesc
-)
-
-func file_api_v1_tag_service_proto_rawDescGZIP() []byte {
-	file_api_v1_tag_service_proto_rawDescOnce.Do(func() {
-		file_api_v1_tag_service_proto_rawDescData = protoimpl.X.CompressGZIP(file_api_v1_tag_service_proto_rawDescData)
-	})
-	return file_api_v1_tag_service_proto_rawDescData
-}
-
-var file_api_v1_tag_service_proto_msgTypes = make([]protoimpl.MessageInfo, 9)
-var file_api_v1_tag_service_proto_goTypes = []interface{}{
-	(*Tag)(nil),                       // 0: memos.api.v1.Tag
-	(*UpsertTagRequest)(nil),          // 1: memos.api.v1.UpsertTagRequest
-	(*BatchUpsertTagRequest)(nil),     // 2: memos.api.v1.BatchUpsertTagRequest
-	(*ListTagsRequest)(nil),           // 3: memos.api.v1.ListTagsRequest
-	(*ListTagsResponse)(nil),          // 4: memos.api.v1.ListTagsResponse
-	(*RenameTagRequest)(nil),          // 5: memos.api.v1.RenameTagRequest
-	(*DeleteTagRequest)(nil),          // 6: memos.api.v1.DeleteTagRequest
-	(*GetTagSuggestionsRequest)(nil),  // 7: memos.api.v1.GetTagSuggestionsRequest
-	(*GetTagSuggestionsResponse)(nil), // 8: memos.api.v1.GetTagSuggestionsResponse
-	(*emptypb.Empty)(nil),             // 9: google.protobuf.Empty
-}
-var file_api_v1_tag_service_proto_depIdxs = []int32{
-	1, // 0: memos.api.v1.BatchUpsertTagRequest.requests:type_name -> memos.api.v1.UpsertTagRequest
-	0, // 1: memos.api.v1.ListTagsResponse.tags:type_name -> memos.api.v1.Tag
-	0, // 2: memos.api.v1.DeleteTagRequest.tag:type_name -> memos.api.v1.Tag
-	1, // 3: memos.api.v1.TagService.UpsertTag:input_type -> memos.api.v1.UpsertTagRequest
-	2, // 4: memos.api.v1.TagService.BatchUpsertTag:input_type -> memos.api.v1.BatchUpsertTagRequest
-	3, // 5: memos.api.v1.TagService.ListTags:input_type -> memos.api.v1.ListTagsRequest
-	5, // 6: memos.api.v1.TagService.RenameTag:input_type -> memos.api.v1.RenameTagRequest
-	6, // 7: memos.api.v1.TagService.DeleteTag:input_type -> memos.api.v1.DeleteTagRequest
-	7, // 8: memos.api.v1.TagService.GetTagSuggestions:input_type -> memos.api.v1.GetTagSuggestionsRequest
-	0, // 9: memos.api.v1.TagService.UpsertTag:output_type -> memos.api.v1.Tag
-	9, // 10: memos.api.v1.TagService.BatchUpsertTag:output_type -> google.protobuf.Empty
-	4, // 11: memos.api.v1.TagService.ListTags:output_type -> memos.api.v1.ListTagsResponse
-	9, // 12: memos.api.v1.TagService.RenameTag:output_type -> google.protobuf.Empty
-	9, // 13: memos.api.v1.TagService.DeleteTag:output_type -> google.protobuf.Empty
-	8, // 14: memos.api.v1.TagService.GetTagSuggestions:output_type -> memos.api.v1.GetTagSuggestionsResponse
-	9, // [9:15] is the sub-list for method output_type
-	3, // [3:9] is the sub-list for method input_type
-	3, // [3:3] is the sub-list for extension type_name
-	3, // [3:3] is the sub-list for extension extendee
-	0, // [0:3] is the sub-list for field type_name
-}
-
-func init() { file_api_v1_tag_service_proto_init() }
-func file_api_v1_tag_service_proto_init() {
-	if File_api_v1_tag_service_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_api_v1_tag_service_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Tag); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*UpsertTagRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*BatchUpsertTagRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListTagsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[4].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*ListTagsResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[5].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*RenameTagRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[6].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*DeleteTagRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[7].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetTagSuggestionsRequest); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_api_v1_tag_service_proto_msgTypes[8].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*GetTagSuggestionsResponse); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_api_v1_tag_service_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   9,
-			NumExtensions: 0,
-			NumServices:   1,
-		},
-		GoTypes:           file_api_v1_tag_service_proto_goTypes,
-		DependencyIndexes: file_api_v1_tag_service_proto_depIdxs,
-		MessageInfos:      file_api_v1_tag_service_proto_msgTypes,
-	}.Build()
-	File_api_v1_tag_service_proto = out.File
-	file_api_v1_tag_service_proto_rawDesc = nil
-	file_api_v1_tag_service_proto_goTypes = nil
-	file_api_v1_tag_service_proto_depIdxs = nil
-}
diff --git a/proto/gen/api/v1/tag_service.pb.gw.go b/proto/gen/api/v1/tag_service.pb.gw.go
deleted file mode 100644
index b9e240a1..00000000
--- a/proto/gen/api/v1/tag_service.pb.gw.go
+++ /dev/null
@@ -1,560 +0,0 @@
-// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
-// source: api/v1/tag_service.proto
-
-/*
-Package apiv1 is a reverse proxy.
-
-It translates gRPC into RESTful JSON APIs.
-*/
-package apiv1
-
-import (
-	"context"
-	"io"
-	"net/http"
-
-	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
-	"github.com/grpc-ecosystem/grpc-gateway/v2/utilities"
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/grpclog"
-	"google.golang.org/grpc/metadata"
-	"google.golang.org/grpc/status"
-	"google.golang.org/protobuf/proto"
-)
-
-// Suppress "imported and not used" errors
-var _ codes.Code
-var _ io.Reader
-var _ status.Status
-var _ = runtime.String
-var _ = utilities.NewDoubleArray
-var _ = metadata.Join
-
-func request_TagService_UpsertTag_0(ctx context.Context, marshaler runtime.Marshaler, client TagServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq UpsertTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.UpsertTag(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_TagService_UpsertTag_0(ctx context.Context, marshaler runtime.Marshaler, server TagServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq UpsertTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.UpsertTag(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-func request_TagService_BatchUpsertTag_0(ctx context.Context, marshaler runtime.Marshaler, client TagServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq BatchUpsertTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.BatchUpsertTag(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_TagService_BatchUpsertTag_0(ctx context.Context, marshaler runtime.Marshaler, server TagServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq BatchUpsertTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.BatchUpsertTag(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-func request_TagService_ListTags_0(ctx context.Context, marshaler runtime.Marshaler, client TagServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq ListTagsRequest
-	var metadata runtime.ServerMetadata
-
-	msg, err := client.ListTags(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_TagService_ListTags_0(ctx context.Context, marshaler runtime.Marshaler, server TagServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq ListTagsRequest
-	var metadata runtime.ServerMetadata
-
-	msg, err := server.ListTags(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-func request_TagService_RenameTag_0(ctx context.Context, marshaler runtime.Marshaler, client TagServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq RenameTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.RenameTag(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_TagService_RenameTag_0(ctx context.Context, marshaler runtime.Marshaler, server TagServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq RenameTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq); err != nil && err != io.EOF {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.RenameTag(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-var (
-	filter_TagService_DeleteTag_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
-)
-
-func request_TagService_DeleteTag_0(ctx context.Context, marshaler runtime.Marshaler, client TagServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq DeleteTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := req.ParseForm(); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_TagService_DeleteTag_0); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.DeleteTag(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_TagService_DeleteTag_0(ctx context.Context, marshaler runtime.Marshaler, server TagServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq DeleteTagRequest
-	var metadata runtime.ServerMetadata
-
-	if err := req.ParseForm(); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_TagService_DeleteTag_0); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.DeleteTag(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-var (
-	filter_TagService_GetTagSuggestions_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
-)
-
-func request_TagService_GetTagSuggestions_0(ctx context.Context, marshaler runtime.Marshaler, client TagServiceClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq GetTagSuggestionsRequest
-	var metadata runtime.ServerMetadata
-
-	if err := req.ParseForm(); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_TagService_GetTagSuggestions_0); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := client.GetTagSuggestions(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
-	return msg, metadata, err
-
-}
-
-func local_request_TagService_GetTagSuggestions_0(ctx context.Context, marshaler runtime.Marshaler, server TagServiceServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
-	var protoReq GetTagSuggestionsRequest
-	var metadata runtime.ServerMetadata
-
-	if err := req.ParseForm(); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_TagService_GetTagSuggestions_0); err != nil {
-		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
-	}
-
-	msg, err := server.GetTagSuggestions(ctx, &protoReq)
-	return msg, metadata, err
-
-}
-
-// RegisterTagServiceHandlerServer registers the http handlers for service TagService to "mux".
-// UnaryRPC     :call TagServiceServer directly.
-// StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
-// Note that using this registration option will cause many gRPC library features to stop working. Consider using RegisterTagServiceHandlerFromEndpoint instead.
-func RegisterTagServiceHandlerServer(ctx context.Context, mux *runtime.ServeMux, server TagServiceServer) error {
-
-	mux.Handle("POST", pattern_TagService_UpsertTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.TagService/UpsertTag", runtime.WithHTTPPathPattern("/api/v1/tags"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_TagService_UpsertTag_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_UpsertTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("POST", pattern_TagService_BatchUpsertTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.TagService/BatchUpsertTag", runtime.WithHTTPPathPattern("/api/v1/tags:batchUpsert"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_TagService_BatchUpsertTag_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_BatchUpsertTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_TagService_ListTags_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.TagService/ListTags", runtime.WithHTTPPathPattern("/api/v1/tags"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_TagService_ListTags_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_ListTags_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("PATCH", pattern_TagService_RenameTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.TagService/RenameTag", runtime.WithHTTPPathPattern("/api/v1/tags:rename"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_TagService_RenameTag_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_RenameTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("DELETE", pattern_TagService_DeleteTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.TagService/DeleteTag", runtime.WithHTTPPathPattern("/api/v1/tags"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_TagService_DeleteTag_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_DeleteTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_TagService_GetTagSuggestions_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		var stream runtime.ServerTransportStream
-		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateIncomingContext(ctx, mux, req, "/memos.api.v1.TagService/GetTagSuggestions", runtime.WithHTTPPathPattern("/api/v1/tags/suggestion"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := local_request_TagService_GetTagSuggestions_0(annotatedContext, inboundMarshaler, server, req, pathParams)
-		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_GetTagSuggestions_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	return nil
-}
-
-// RegisterTagServiceHandlerFromEndpoint is same as RegisterTagServiceHandler but
-// automatically dials to "endpoint" and closes the connection when "ctx" gets done.
-func RegisterTagServiceHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
-	conn, err := grpc.DialContext(ctx, endpoint, opts...)
-	if err != nil {
-		return err
-	}
-	defer func() {
-		if err != nil {
-			if cerr := conn.Close(); cerr != nil {
-				grpclog.Infof("Failed to close conn to %s: %v", endpoint, cerr)
-			}
-			return
-		}
-		go func() {
-			<-ctx.Done()
-			if cerr := conn.Close(); cerr != nil {
-				grpclog.Infof("Failed to close conn to %s: %v", endpoint, cerr)
-			}
-		}()
-	}()
-
-	return RegisterTagServiceHandler(ctx, mux, conn)
-}
-
-// RegisterTagServiceHandler registers the http handlers for service TagService to "mux".
-// The handlers forward requests to the grpc endpoint over "conn".
-func RegisterTagServiceHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
-	return RegisterTagServiceHandlerClient(ctx, mux, NewTagServiceClient(conn))
-}
-
-// RegisterTagServiceHandlerClient registers the http handlers for service TagService
-// to "mux". The handlers forward requests to the grpc endpoint over the given implementation of "TagServiceClient".
-// Note: the gRPC framework executes interceptors within the gRPC handler. If the passed in "TagServiceClient"
-// doesn't go through the normal gRPC flow (creating a gRPC client etc.) then it will be up to the passed in
-// "TagServiceClient" to call the correct interceptors.
-func RegisterTagServiceHandlerClient(ctx context.Context, mux *runtime.ServeMux, client TagServiceClient) error {
-
-	mux.Handle("POST", pattern_TagService_UpsertTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.TagService/UpsertTag", runtime.WithHTTPPathPattern("/api/v1/tags"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_TagService_UpsertTag_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_UpsertTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("POST", pattern_TagService_BatchUpsertTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.TagService/BatchUpsertTag", runtime.WithHTTPPathPattern("/api/v1/tags:batchUpsert"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_TagService_BatchUpsertTag_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_BatchUpsertTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_TagService_ListTags_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.TagService/ListTags", runtime.WithHTTPPathPattern("/api/v1/tags"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_TagService_ListTags_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_ListTags_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("PATCH", pattern_TagService_RenameTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.TagService/RenameTag", runtime.WithHTTPPathPattern("/api/v1/tags:rename"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_TagService_RenameTag_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_RenameTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("DELETE", pattern_TagService_DeleteTag_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.TagService/DeleteTag", runtime.WithHTTPPathPattern("/api/v1/tags"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_TagService_DeleteTag_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_DeleteTag_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	mux.Handle("GET", pattern_TagService_GetTagSuggestions_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
-		ctx, cancel := context.WithCancel(req.Context())
-		defer cancel()
-		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
-		var err error
-		var annotatedContext context.Context
-		annotatedContext, err = runtime.AnnotateContext(ctx, mux, req, "/memos.api.v1.TagService/GetTagSuggestions", runtime.WithHTTPPathPattern("/api/v1/tags/suggestion"))
-		if err != nil {
-			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
-			return
-		}
-		resp, md, err := request_TagService_GetTagSuggestions_0(annotatedContext, inboundMarshaler, client, req, pathParams)
-		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
-		if err != nil {
-			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
-			return
-		}
-
-		forward_TagService_GetTagSuggestions_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
-
-	})
-
-	return nil
-}
-
-var (
-	pattern_TagService_UpsertTag_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"api", "v1", "tags"}, ""))
-
-	pattern_TagService_BatchUpsertTag_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"api", "v1", "tags"}, "batchUpsert"))
-
-	pattern_TagService_ListTags_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"api", "v1", "tags"}, ""))
-
-	pattern_TagService_RenameTag_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"api", "v1", "tags"}, "rename"))
-
-	pattern_TagService_DeleteTag_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2}, []string{"api", "v1", "tags"}, ""))
-
-	pattern_TagService_GetTagSuggestions_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"api", "v1", "tags", "suggestion"}, ""))
-)
-
-var (
-	forward_TagService_UpsertTag_0 = runtime.ForwardResponseMessage
-
-	forward_TagService_BatchUpsertTag_0 = runtime.ForwardResponseMessage
-
-	forward_TagService_ListTags_0 = runtime.ForwardResponseMessage
-
-	forward_TagService_RenameTag_0 = runtime.ForwardResponseMessage
-
-	forward_TagService_DeleteTag_0 = runtime.ForwardResponseMessage
-
-	forward_TagService_GetTagSuggestions_0 = runtime.ForwardResponseMessage
-)
diff --git a/proto/gen/api/v1/tag_service_grpc.pb.go b/proto/gen/api/v1/tag_service_grpc.pb.go
deleted file mode 100644
index cfed8613..00000000
--- a/proto/gen/api/v1/tag_service_grpc.pb.go
+++ /dev/null
@@ -1,309 +0,0 @@
-// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
-// versions:
-// - protoc-gen-go-grpc v1.3.0
-// - protoc             (unknown)
-// source: api/v1/tag_service.proto
-
-package apiv1
-
-import (
-	context "context"
-	grpc "google.golang.org/grpc"
-	codes "google.golang.org/grpc/codes"
-	status "google.golang.org/grpc/status"
-	emptypb "google.golang.org/protobuf/types/known/emptypb"
-)
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the grpc package it is being compiled against.
-// Requires gRPC-Go v1.32.0 or later.
-const _ = grpc.SupportPackageIsVersion7
-
-const (
-	TagService_UpsertTag_FullMethodName         = "/memos.api.v1.TagService/UpsertTag"
-	TagService_BatchUpsertTag_FullMethodName    = "/memos.api.v1.TagService/BatchUpsertTag"
-	TagService_ListTags_FullMethodName          = "/memos.api.v1.TagService/ListTags"
-	TagService_RenameTag_FullMethodName         = "/memos.api.v1.TagService/RenameTag"
-	TagService_DeleteTag_FullMethodName         = "/memos.api.v1.TagService/DeleteTag"
-	TagService_GetTagSuggestions_FullMethodName = "/memos.api.v1.TagService/GetTagSuggestions"
-)
-
-// TagServiceClient is the client API for TagService service.
-//
-// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
-type TagServiceClient interface {
-	// UpsertTag upserts a tag.
-	UpsertTag(ctx context.Context, in *UpsertTagRequest, opts ...grpc.CallOption) (*Tag, error)
-	// BatchUpsertTag upserts multiple tags.
-	BatchUpsertTag(ctx context.Context, in *BatchUpsertTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
-	// ListTags lists tags.
-	ListTags(ctx context.Context, in *ListTagsRequest, opts ...grpc.CallOption) (*ListTagsResponse, error)
-	// RenameTag renames a tag.
-	// All related memos will be updated.
-	RenameTag(ctx context.Context, in *RenameTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
-	// DeleteTag deletes a tag.
-	DeleteTag(ctx context.Context, in *DeleteTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error)
-	// GetTagSuggestions gets tag suggestions from the user's memos.
-	GetTagSuggestions(ctx context.Context, in *GetTagSuggestionsRequest, opts ...grpc.CallOption) (*GetTagSuggestionsResponse, error)
-}
-
-type tagServiceClient struct {
-	cc grpc.ClientConnInterface
-}
-
-func NewTagServiceClient(cc grpc.ClientConnInterface) TagServiceClient {
-	return &tagServiceClient{cc}
-}
-
-func (c *tagServiceClient) UpsertTag(ctx context.Context, in *UpsertTagRequest, opts ...grpc.CallOption) (*Tag, error) {
-	out := new(Tag)
-	err := c.cc.Invoke(ctx, TagService_UpsertTag_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *tagServiceClient) BatchUpsertTag(ctx context.Context, in *BatchUpsertTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
-	out := new(emptypb.Empty)
-	err := c.cc.Invoke(ctx, TagService_BatchUpsertTag_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *tagServiceClient) ListTags(ctx context.Context, in *ListTagsRequest, opts ...grpc.CallOption) (*ListTagsResponse, error) {
-	out := new(ListTagsResponse)
-	err := c.cc.Invoke(ctx, TagService_ListTags_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *tagServiceClient) RenameTag(ctx context.Context, in *RenameTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
-	out := new(emptypb.Empty)
-	err := c.cc.Invoke(ctx, TagService_RenameTag_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *tagServiceClient) DeleteTag(ctx context.Context, in *DeleteTagRequest, opts ...grpc.CallOption) (*emptypb.Empty, error) {
-	out := new(emptypb.Empty)
-	err := c.cc.Invoke(ctx, TagService_DeleteTag_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-func (c *tagServiceClient) GetTagSuggestions(ctx context.Context, in *GetTagSuggestionsRequest, opts ...grpc.CallOption) (*GetTagSuggestionsResponse, error) {
-	out := new(GetTagSuggestionsResponse)
-	err := c.cc.Invoke(ctx, TagService_GetTagSuggestions_FullMethodName, in, out, opts...)
-	if err != nil {
-		return nil, err
-	}
-	return out, nil
-}
-
-// TagServiceServer is the server API for TagService service.
-// All implementations must embed UnimplementedTagServiceServer
-// for forward compatibility
-type TagServiceServer interface {
-	// UpsertTag upserts a tag.
-	UpsertTag(context.Context, *UpsertTagRequest) (*Tag, error)
-	// BatchUpsertTag upserts multiple tags.
-	BatchUpsertTag(context.Context, *BatchUpsertTagRequest) (*emptypb.Empty, error)
-	// ListTags lists tags.
-	ListTags(context.Context, *ListTagsRequest) (*ListTagsResponse, error)
-	// RenameTag renames a tag.
-	// All related memos will be updated.
-	RenameTag(context.Context, *RenameTagRequest) (*emptypb.Empty, error)
-	// DeleteTag deletes a tag.
-	DeleteTag(context.Context, *DeleteTagRequest) (*emptypb.Empty, error)
-	// GetTagSuggestions gets tag suggestions from the user's memos.
-	GetTagSuggestions(context.Context, *GetTagSuggestionsRequest) (*GetTagSuggestionsResponse, error)
-	mustEmbedUnimplementedTagServiceServer()
-}
-
-// UnimplementedTagServiceServer must be embedded to have forward compatible implementations.
-type UnimplementedTagServiceServer struct {
-}
-
-func (UnimplementedTagServiceServer) UpsertTag(context.Context, *UpsertTagRequest) (*Tag, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method UpsertTag not implemented")
-}
-func (UnimplementedTagServiceServer) BatchUpsertTag(context.Context, *BatchUpsertTagRequest) (*emptypb.Empty, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method BatchUpsertTag not implemented")
-}
-func (UnimplementedTagServiceServer) ListTags(context.Context, *ListTagsRequest) (*ListTagsResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method ListTags not implemented")
-}
-func (UnimplementedTagServiceServer) RenameTag(context.Context, *RenameTagRequest) (*emptypb.Empty, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method RenameTag not implemented")
-}
-func (UnimplementedTagServiceServer) DeleteTag(context.Context, *DeleteTagRequest) (*emptypb.Empty, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method DeleteTag not implemented")
-}
-func (UnimplementedTagServiceServer) GetTagSuggestions(context.Context, *GetTagSuggestionsRequest) (*GetTagSuggestionsResponse, error) {
-	return nil, status.Errorf(codes.Unimplemented, "method GetTagSuggestions not implemented")
-}
-func (UnimplementedTagServiceServer) mustEmbedUnimplementedTagServiceServer() {}
-
-// UnsafeTagServiceServer may be embedded to opt out of forward compatibility for this service.
-// Use of this interface is not recommended, as added methods to TagServiceServer will
-// result in compilation errors.
-type UnsafeTagServiceServer interface {
-	mustEmbedUnimplementedTagServiceServer()
-}
-
-func RegisterTagServiceServer(s grpc.ServiceRegistrar, srv TagServiceServer) {
-	s.RegisterService(&TagService_ServiceDesc, srv)
-}
-
-func _TagService_UpsertTag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(UpsertTagRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TagServiceServer).UpsertTag(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: TagService_UpsertTag_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TagServiceServer).UpsertTag(ctx, req.(*UpsertTagRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _TagService_BatchUpsertTag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(BatchUpsertTagRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TagServiceServer).BatchUpsertTag(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: TagService_BatchUpsertTag_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TagServiceServer).BatchUpsertTag(ctx, req.(*BatchUpsertTagRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _TagService_ListTags_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(ListTagsRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TagServiceServer).ListTags(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: TagService_ListTags_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TagServiceServer).ListTags(ctx, req.(*ListTagsRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _TagService_RenameTag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(RenameTagRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TagServiceServer).RenameTag(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: TagService_RenameTag_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TagServiceServer).RenameTag(ctx, req.(*RenameTagRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _TagService_DeleteTag_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(DeleteTagRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TagServiceServer).DeleteTag(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: TagService_DeleteTag_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TagServiceServer).DeleteTag(ctx, req.(*DeleteTagRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-func _TagService_GetTagSuggestions_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
-	in := new(GetTagSuggestionsRequest)
-	if err := dec(in); err != nil {
-		return nil, err
-	}
-	if interceptor == nil {
-		return srv.(TagServiceServer).GetTagSuggestions(ctx, in)
-	}
-	info := &grpc.UnaryServerInfo{
-		Server:     srv,
-		FullMethod: TagService_GetTagSuggestions_FullMethodName,
-	}
-	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
-		return srv.(TagServiceServer).GetTagSuggestions(ctx, req.(*GetTagSuggestionsRequest))
-	}
-	return interceptor(ctx, in, info, handler)
-}
-
-// TagService_ServiceDesc is the grpc.ServiceDesc for TagService service.
-// It's only intended for direct use with grpc.RegisterService,
-// and not to be introspected or modified (even as a copy)
-var TagService_ServiceDesc = grpc.ServiceDesc{
-	ServiceName: "memos.api.v1.TagService",
-	HandlerType: (*TagServiceServer)(nil),
-	Methods: []grpc.MethodDesc{
-		{
-			MethodName: "UpsertTag",
-			Handler:    _TagService_UpsertTag_Handler,
-		},
-		{
-			MethodName: "BatchUpsertTag",
-			Handler:    _TagService_BatchUpsertTag_Handler,
-		},
-		{
-			MethodName: "ListTags",
-			Handler:    _TagService_ListTags_Handler,
-		},
-		{
-			MethodName: "RenameTag",
-			Handler:    _TagService_RenameTag_Handler,
-		},
-		{
-			MethodName: "DeleteTag",
-			Handler:    _TagService_DeleteTag_Handler,
-		},
-		{
-			MethodName: "GetTagSuggestions",
-			Handler:    _TagService_GetTagSuggestions_Handler,
-		},
-	},
-	Streams:  []grpc.StreamDesc{},
-	Metadata: "api/v1/tag_service.proto",
-}
diff --git a/proto/gen/api/v1/user_service.pb.go b/proto/gen/api/v1/user_service.pb.go
index 205c2133..8cebfcb8 100644
--- a/proto/gen/api/v1/user_service.pb.go
+++ b/proto/gen/api/v1/user_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/user_service.proto
 
diff --git a/proto/gen/api/v1/webhook_service.pb.go b/proto/gen/api/v1/webhook_service.pb.go
index 61e1a567..453c9415 100644
--- a/proto/gen/api/v1/webhook_service.pb.go
+++ b/proto/gen/api/v1/webhook_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/webhook_service.proto
 
diff --git a/proto/gen/api/v1/workspace_service.pb.go b/proto/gen/api/v1/workspace_service.pb.go
index b12b1312..817d385d 100644
--- a/proto/gen/api/v1/workspace_service.pb.go
+++ b/proto/gen/api/v1/workspace_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/workspace_service.proto
 
diff --git a/proto/gen/api/v1/workspace_setting_service.pb.go b/proto/gen/api/v1/workspace_setting_service.pb.go
index 2651e926..0a6cda33 100644
--- a/proto/gen/api/v1/workspace_setting_service.pb.go
+++ b/proto/gen/api/v1/workspace_setting_service.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: api/v1/workspace_setting_service.proto
 
diff --git a/proto/gen/store/activity.pb.go b/proto/gen/store/activity.pb.go
index 2f52702e..53f4ea53 100644
--- a/proto/gen/store/activity.pb.go
+++ b/proto/gen/store/activity.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/activity.proto
 
diff --git a/proto/gen/store/idp.pb.go b/proto/gen/store/idp.pb.go
index 2e77615c..3d4e4406 100644
--- a/proto/gen/store/idp.pb.go
+++ b/proto/gen/store/idp.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/idp.proto
 
diff --git a/proto/gen/store/inbox.pb.go b/proto/gen/store/inbox.pb.go
index ce833c35..603bfe6c 100644
--- a/proto/gen/store/inbox.pb.go
+++ b/proto/gen/store/inbox.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/inbox.proto
 
diff --git a/proto/gen/store/reaction.pb.go b/proto/gen/store/reaction.pb.go
index 9393c79b..678f9d0c 100644
--- a/proto/gen/store/reaction.pb.go
+++ b/proto/gen/store/reaction.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/reaction.proto
 
diff --git a/proto/gen/store/resource.pb.go b/proto/gen/store/resource.pb.go
index 6e853d3f..93ec175c 100644
--- a/proto/gen/store/resource.pb.go
+++ b/proto/gen/store/resource.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/resource.proto
 
diff --git a/proto/gen/store/user_setting.pb.go b/proto/gen/store/user_setting.pb.go
index 898e6f0e..4d4ee94e 100644
--- a/proto/gen/store/user_setting.pb.go
+++ b/proto/gen/store/user_setting.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/user_setting.proto
 
diff --git a/proto/gen/store/workspace_setting.pb.go b/proto/gen/store/workspace_setting.pb.go
index dfc59bbd..30bfc5b1 100644
--- a/proto/gen/store/workspace_setting.pb.go
+++ b/proto/gen/store/workspace_setting.pb.go
@@ -1,6 +1,6 @@
 // Code generated by protoc-gen-go. DO NOT EDIT.
 // versions:
-// 	protoc-gen-go v1.34.0
+// 	protoc-gen-go v1.34.1
 // 	protoc        (unknown)
 // source: store/workspace_setting.proto
 
diff --git a/server/router/api/v1/memo_service.go b/server/router/api/v1/memo_service.go
index 118bf528..403bee71 100644
--- a/server/router/api/v1/memo_service.go
+++ b/server/router/api/v1/memo_service.go
@@ -6,13 +6,16 @@ import (
 	"context"
 	"fmt"
 	"log/slog"
+	"slices"
 	"time"
 
 	"github.com/google/cel-go/cel"
 	"github.com/lithammer/shortuuid/v4"
 	"github.com/pkg/errors"
+	"github.com/yourselfhosted/gomark/ast"
 	"github.com/yourselfhosted/gomark/parser"
 	"github.com/yourselfhosted/gomark/parser/tokenizer"
+	"github.com/yourselfhosted/gomark/restore"
 	expr "google.golang.org/genproto/googleapis/api/expr/v1alpha1"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/status"
@@ -59,6 +62,11 @@ func (s *APIV1Service) CreateMemo(ctx context.Context, request *v1pb.CreateMemoR
 	if len(create.Content) > contentLengthLimit {
 		return nil, status.Errorf(codes.InvalidArgument, "content too long (max %d characters)", contentLengthLimit)
 	}
+	tags, err := ExtractTagsFromContent(create.Content)
+	if err != nil {
+		return nil, status.Errorf(codes.InvalidArgument, "failed to extract tags")
+	}
+	create.Tags = tags
 
 	memo, err := s.Store.CreateMemo(ctx, create)
 	if err != nil {
@@ -215,7 +223,10 @@ func (s *APIV1Service) UpdateMemo(ctx context.Context, request *v1pb.UpdateMemoR
 		return nil, status.Errorf(codes.NotFound, "memo not found")
 	}
 
-	user, _ := getCurrentUser(ctx, s.Store)
+	user, err := getCurrentUser(ctx, s.Store)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get current user")
+	}
 	if memo.CreatorID != user.ID {
 		return nil, status.Errorf(codes.PermissionDenied, "permission denied")
 	}
@@ -227,7 +238,19 @@ func (s *APIV1Service) UpdateMemo(ctx context.Context, request *v1pb.UpdateMemoR
 	}
 	for _, path := range request.UpdateMask.Paths {
 		if path == "content" {
+			contentLengthLimit, err := s.getContentLengthLimit(ctx)
+			if err != nil {
+				return nil, status.Errorf(codes.Internal, "failed to get content length limit")
+			}
+			if len(request.Memo.Content) > contentLengthLimit {
+				return nil, status.Errorf(codes.InvalidArgument, "content too long (max %d characters)", contentLengthLimit)
+			}
 			update.Content = &request.Memo.Content
+			tags, err := ExtractTagsFromContent(*update.Content)
+			if err != nil {
+				return nil, status.Errorf(codes.InvalidArgument, "failed to extract tags")
+			}
+			update.Tags = &tags
 		} else if path == "uid" {
 			update.UID = &request.Memo.Name
 			if !util.UIDMatcher.MatchString(*update.UID) {
@@ -259,13 +282,6 @@ func (s *APIV1Service) UpdateMemo(ctx context.Context, request *v1pb.UpdateMemoR
 			}
 		}
 	}
-	contentLengthLimit, err := s.getContentLengthLimit(ctx)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to get content length limit")
-	}
-	if update.Content != nil && len(*update.Content) > contentLengthLimit {
-		return nil, status.Errorf(codes.InvalidArgument, "content too long (max %d characters)", contentLengthLimit)
-	}
 
 	if err = s.Store.UpdateMemo(ctx, update); err != nil {
 		return nil, status.Errorf(codes.Internal, "failed to update memo")
@@ -531,6 +547,158 @@ func (s *APIV1Service) ExportMemos(ctx context.Context, request *v1pb.ExportMemo
 	}, nil
 }
 
+func (s *APIV1Service) ListMemoTags(ctx context.Context, request *v1pb.ListMemoTagsRequest) (*v1pb.ListMemoTagsResponse, error) {
+	user, err := getCurrentUser(ctx, s.Store)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get current user")
+	}
+
+	normalRowStatus := store.Normal
+	memoFind := &store.FindMemo{
+		CreatorID:       &user.ID,
+		RowStatus:       &normalRowStatus,
+		ExcludeComments: true,
+		// Default exclude content for performance.
+		ExcludeContent: true,
+	}
+	if (request.Parent) != "memos/-" {
+		memoID, err := ExtractMemoIDFromName(request.Parent)
+		if err != nil {
+			return nil, status.Errorf(codes.InvalidArgument, "invalid memo name: %v", err)
+		}
+		memoFind.ID = &memoID
+	}
+	if request.Rebuild {
+		// If rebuild is true, include content to extract tags.
+		memoFind.ExcludeContent = false
+	}
+
+	memos, err := s.Store.ListMemos(ctx, memoFind)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to list memos")
+	}
+
+	if request.Rebuild {
+		for _, memo := range memos {
+			tags, err := ExtractTagsFromContent(memo.Content)
+			if err != nil {
+				return nil, status.Errorf(codes.Internal, "failed to extract tags")
+			}
+			memo.Tags = tags
+			if err := s.Store.UpdateMemo(ctx, &store.UpdateMemo{
+				ID:   memo.ID,
+				Tags: &tags,
+			}); err != nil {
+				return nil, status.Errorf(codes.Internal, "failed to update memo")
+			}
+		}
+	}
+
+	tagAmounts := map[string]int32{}
+	for _, memo := range memos {
+		for _, tag := range memo.Tags {
+			tagAmounts[tag]++
+		}
+	}
+	return &v1pb.ListMemoTagsResponse{
+		TagAmounts: tagAmounts,
+	}, nil
+}
+
+func (s *APIV1Service) RenameMemoTag(ctx context.Context, request *v1pb.RenameMemoTagRequest) (*emptypb.Empty, error) {
+	user, err := getCurrentUser(ctx, s.Store)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get current user")
+	}
+
+	memoFind := &store.FindMemo{
+		CreatorID:       &user.ID,
+		Tag:             &request.OldTag,
+		ExcludeComments: true,
+	}
+	if (request.Parent) != "memos/-" {
+		memoID, err := ExtractMemoIDFromName(request.Parent)
+		if err != nil {
+			return nil, status.Errorf(codes.InvalidArgument, "invalid memo name: %v", err)
+		}
+		memoFind.ID = &memoID
+	}
+
+	memos, err := s.Store.ListMemos(ctx, memoFind)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to list memos")
+	}
+
+	for _, memo := range memos {
+		nodes, err := parser.Parse(tokenizer.Tokenize(memo.Content))
+		if err != nil {
+			return nil, status.Errorf(codes.Internal, "failed to parse memo: %v", err)
+		}
+		TraverseASTNodes(nodes, func(node ast.Node) {
+			if tag, ok := node.(*ast.Tag); ok && tag.Content == request.OldTag {
+				tag.Content = request.NewTag
+			}
+		})
+		content := restore.Restore(nodes)
+		tags := util.ReplaceString(memo.Tags, request.OldTag, request.NewTag)
+		if err := s.Store.UpdateMemo(ctx, &store.UpdateMemo{
+			ID:      memo.ID,
+			Content: &content,
+			Tags:    &tags,
+		}); err != nil {
+			return nil, status.Errorf(codes.Internal, "failed to update memo: %v", err)
+		}
+	}
+
+	return &emptypb.Empty{}, nil
+}
+
+func (s *APIV1Service) DeleteMemoTag(ctx context.Context, request *v1pb.DeleteMemoTagRequest) (*emptypb.Empty, error) {
+	user, err := getCurrentUser(ctx, s.Store)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to get current user")
+	}
+
+	memoFind := &store.FindMemo{
+		CreatorID:       &user.ID,
+		Tag:             &request.Tag,
+		ExcludeContent:  true,
+		ExcludeComments: true,
+	}
+	if (request.Parent) != "memos/-" {
+		memoID, err := ExtractMemoIDFromName(request.Parent)
+		if err != nil {
+			return nil, status.Errorf(codes.InvalidArgument, "invalid memo name: %v", err)
+		}
+		memoFind.ID = &memoID
+	}
+
+	memos, err := s.Store.ListMemos(ctx, memoFind)
+	if err != nil {
+		return nil, status.Errorf(codes.Internal, "failed to list memos")
+	}
+
+	for _, memo := range memos {
+		if request.DeleteRelatedMemos {
+			err := s.Store.DeleteMemo(ctx, &store.DeleteMemo{ID: memo.ID})
+			if err != nil {
+				return nil, status.Errorf(codes.Internal, "failed to delete memo")
+			}
+		} else {
+			archived := store.Archived
+			err := s.Store.UpdateMemo(ctx, &store.UpdateMemo{
+				ID:        memo.ID,
+				RowStatus: &archived,
+			})
+			if err != nil {
+				return nil, status.Errorf(codes.Internal, "failed to update memo")
+			}
+		}
+	}
+
+	return &emptypb.Empty{}, nil
+}
+
 func (s *APIV1Service) convertMemoFromStore(ctx context.Context, memo *store.Memo) (*v1pb.Memo, error) {
 	displayTs := memo.CreatedTs
 	workspaceMemoRelatedSetting, err := s.Store.GetWorkspaceMemoRelatedSetting(ctx)
@@ -578,6 +746,7 @@ func (s *APIV1Service) convertMemoFromStore(ctx context.Context, memo *store.Mem
 		Content:     memo.Content,
 		Nodes:       convertFromASTNodes(nodes),
 		Visibility:  convertVisibilityFromStore(memo.Visibility),
+		Tags:        memo.Tags,
 		Pinned:      memo.Pinned,
 		ParentId:    memo.ParentID,
 		Relations:   listMemoRelationsResponse.Relations,
@@ -628,6 +797,9 @@ func (s *APIV1Service) buildMemoFindWithFilter(ctx context.Context, find *store.
 		if len(filter.Visibilities) > 0 {
 			find.VisibilityList = filter.Visibilities
 		}
+		if filter.Tag != nil {
+			find.Tag = filter.Tag
+		}
 		if filter.OrderByPinned {
 			find.OrderByPinned = filter.OrderByPinned
 		}
@@ -720,6 +892,7 @@ func (s *APIV1Service) getContentLengthLimit(ctx context.Context) (int, error) {
 var SearchMemosFilterCELAttributes = []cel.EnvOption{
 	cel.Variable("content_search", cel.ListType(cel.StringType)),
 	cel.Variable("visibilities", cel.ListType(cel.StringType)),
+	cel.Variable("tag", cel.StringType),
 	cel.Variable("order_by_pinned", cel.BoolType),
 	cel.Variable("display_time_before", cel.IntType),
 	cel.Variable("display_time_after", cel.IntType),
@@ -734,6 +907,7 @@ var SearchMemosFilterCELAttributes = []cel.EnvOption{
 type SearchMemosFilter struct {
 	ContentSearch     []string
 	Visibilities      []store.Visibility
+	Tag               *string
 	OrderByPinned     bool
 	DisplayTimeBefore *int64
 	DisplayTimeAfter  *int64
@@ -782,6 +956,9 @@ func findSearchMemosField(callExpr *expr.Expr_Call, filter *SearchMemosFilter) {
 					visibilities = append(visibilities, store.Visibility(value))
 				}
 				filter.Visibilities = visibilities
+			} else if idExpr.Name == "tag" {
+				tag := callExpr.Args[1].GetConstExpr().GetStringValue()
+				filter.Tag = &tag
 			} else if idExpr.Name == "order_by_pinned" {
 				value := callExpr.Args[1].GetConstExpr().GetBoolValue()
 				filter.OrderByPinned = value
@@ -821,6 +998,45 @@ func findSearchMemosField(callExpr *expr.Expr_Call, filter *SearchMemosFilter) {
 	}
 }
 
+func ExtractTagsFromContent(content string) ([]string, error) {
+	nodes, err := parser.Parse(tokenizer.Tokenize(content))
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to parse content")
+	}
+	tags := []string{}
+	TraverseASTNodes(nodes, func(node ast.Node) {
+		if tagNode, ok := node.(*ast.Tag); ok {
+			tag := tagNode.Content
+			if !slices.Contains(tags, tag) {
+				tags = append(tags, tag)
+			}
+		}
+	})
+	return tags, nil
+}
+
+func TraverseASTNodes(nodes []ast.Node, fn func(ast.Node)) {
+	for _, node := range nodes {
+		fn(node)
+		switch n := node.(type) {
+		case *ast.Paragraph:
+			TraverseASTNodes(n.Children, fn)
+		case *ast.Heading:
+			TraverseASTNodes(n.Children, fn)
+		case *ast.Blockquote:
+			TraverseASTNodes(n.Children, fn)
+		case *ast.OrderedList:
+			TraverseASTNodes(n.Children, fn)
+		case *ast.UnorderedList:
+			TraverseASTNodes(n.Children, fn)
+		case *ast.TaskList:
+			TraverseASTNodes(n.Children, fn)
+		case *ast.Bold:
+			TraverseASTNodes(n.Children, fn)
+		}
+	}
+}
+
 // DispatchMemoCreatedWebhook dispatches webhook when memo is created.
 func (s *APIV1Service) DispatchMemoCreatedWebhook(ctx context.Context, memo *v1pb.Memo) error {
 	return s.dispatchMemoRelatedWebhook(ctx, memo, "memos.memo.created")
diff --git a/server/router/api/v1/tag_service.go b/server/router/api/v1/tag_service.go
deleted file mode 100644
index 2fb163ba..00000000
--- a/server/router/api/v1/tag_service.go
+++ /dev/null
@@ -1,254 +0,0 @@
-package v1
-
-import (
-	"context"
-	"fmt"
-	"slices"
-	"sort"
-
-	"github.com/pkg/errors"
-	"github.com/yourselfhosted/gomark/ast"
-	"github.com/yourselfhosted/gomark/parser"
-	"github.com/yourselfhosted/gomark/parser/tokenizer"
-	"github.com/yourselfhosted/gomark/restore"
-	"google.golang.org/grpc/codes"
-	"google.golang.org/grpc/status"
-	"google.golang.org/protobuf/types/known/emptypb"
-
-	v1pb "github.com/usememos/memos/proto/gen/api/v1"
-	"github.com/usememos/memos/store"
-)
-
-func (s *APIV1Service) UpsertTag(ctx context.Context, request *v1pb.UpsertTagRequest) (*v1pb.Tag, error) {
-	user, err := getCurrentUser(ctx, s.Store)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to get user")
-	}
-
-	tag, err := s.Store.UpsertTag(ctx, &store.Tag{
-		Name:      request.Name,
-		CreatorID: user.ID,
-	})
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to upsert tag: %v", err)
-	}
-
-	tagMessage, err := s.convertTagFromStore(ctx, tag)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to convert tag: %v", err)
-	}
-	return tagMessage, nil
-}
-
-func (s *APIV1Service) BatchUpsertTag(ctx context.Context, request *v1pb.BatchUpsertTagRequest) (*emptypb.Empty, error) {
-	for _, r := range request.Requests {
-		if _, err := s.UpsertTag(ctx, r); err != nil {
-			return nil, status.Errorf(codes.Internal, "failed to batch upsert tags: %v", err)
-		}
-	}
-	return &emptypb.Empty{}, nil
-}
-
-func (s *APIV1Service) ListTags(ctx context.Context, _ *v1pb.ListTagsRequest) (*v1pb.ListTagsResponse, error) {
-	user, err := getCurrentUser(ctx, s.Store)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to get user")
-	}
-	if user == nil {
-		return nil, status.Errorf(codes.PermissionDenied, "permission denied")
-	}
-	tagFind := &store.FindTag{
-		CreatorID: user.ID,
-	}
-	tags, err := s.Store.ListTags(ctx, tagFind)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to list tags: %v", err)
-	}
-
-	response := &v1pb.ListTagsResponse{}
-	for _, tag := range tags {
-		t, err := s.convertTagFromStore(ctx, tag)
-		if err != nil {
-			return nil, status.Errorf(codes.Internal, "failed to convert tag: %v", err)
-		}
-		response.Tags = append(response.Tags, t)
-	}
-	return response, nil
-}
-
-func (s *APIV1Service) RenameTag(ctx context.Context, request *v1pb.RenameTagRequest) (*emptypb.Empty, error) {
-	userID, err := ExtractUserIDFromName(request.User)
-	if err != nil {
-		return nil, status.Errorf(codes.InvalidArgument, "invalid user name: %v", err)
-	}
-	user, err := s.Store.GetUser(ctx, &store.FindUser{
-		ID: &userID,
-	})
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to get user: %v", err)
-	}
-	if user == nil {
-		return nil, status.Errorf(codes.NotFound, "user not found")
-	}
-
-	// Find all related memos.
-	memos, err := s.Store.ListMemos(ctx, &store.FindMemo{
-		CreatorID:     &user.ID,
-		ContentSearch: []string{fmt.Sprintf("#%s", request.OldName)},
-	})
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to list memos: %v", err)
-	}
-	// Replace tag name in memo content.
-	for _, memo := range memos {
-		nodes, err := parser.Parse(tokenizer.Tokenize(memo.Content))
-		if err != nil {
-			return nil, status.Errorf(codes.Internal, "failed to parse memo: %v", err)
-		}
-		TraverseASTNodes(nodes, func(node ast.Node) {
-			if tag, ok := node.(*ast.Tag); ok && tag.Content == request.OldName {
-				tag.Content = request.NewName
-			}
-		})
-		content := restore.Restore(nodes)
-		if err := s.Store.UpdateMemo(ctx, &store.UpdateMemo{
-			ID:      memo.ID,
-			Content: &content,
-		}); err != nil {
-			return nil, status.Errorf(codes.Internal, "failed to update memo: %v", err)
-		}
-	}
-
-	// Delete old tag and create new tag.
-	if err := s.Store.DeleteTag(ctx, &store.DeleteTag{
-		CreatorID: user.ID,
-		Name:      request.OldName,
-	}); err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to delete tag: %v", err)
-	}
-	if _, err := s.Store.UpsertTag(ctx, &store.Tag{
-		CreatorID: user.ID,
-		Name:      request.NewName,
-	}); err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to upsert tag: %v", err)
-	}
-
-	return &emptypb.Empty{}, nil
-}
-
-func (s *APIV1Service) DeleteTag(ctx context.Context, request *v1pb.DeleteTagRequest) (*emptypb.Empty, error) {
-	user, err := getCurrentUser(ctx, s.Store)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to get user: %v", err)
-	}
-	if user == nil {
-		return nil, status.Errorf(codes.NotFound, "user not found")
-	}
-	if err := s.Store.DeleteTag(ctx, &store.DeleteTag{
-		Name:      request.Tag.Name,
-		CreatorID: user.ID,
-	}); err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to delete tag: %v", err)
-	}
-
-	return &emptypb.Empty{}, nil
-}
-
-func (s *APIV1Service) GetTagSuggestions(ctx context.Context, request *v1pb.GetTagSuggestionsRequest) (*v1pb.GetTagSuggestionsResponse, error) {
-	userID, err := ExtractUserIDFromName(request.User)
-	if err != nil {
-		return nil, status.Errorf(codes.InvalidArgument, "invalid user name: %v", err)
-	}
-	user, err := s.Store.GetUser(ctx, &store.FindUser{
-		ID: &userID,
-	})
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to get user: %v", err)
-	}
-	if user == nil {
-		return nil, status.Errorf(codes.NotFound, "user not found")
-	}
-	normalRowStatus := store.Normal
-	memoFind := &store.FindMemo{
-		CreatorID:     &user.ID,
-		ContentSearch: []string{"#"},
-		RowStatus:     &normalRowStatus,
-	}
-	memos, err := s.Store.ListMemos(ctx, memoFind)
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to list memos: %v", err)
-	}
-
-	tagList, err := s.Store.ListTags(ctx, &store.FindTag{
-		CreatorID: user.ID,
-	})
-	if err != nil {
-		return nil, status.Errorf(codes.Internal, "failed to list tags: %v", err)
-	}
-
-	tagNameList := []string{}
-	for _, tag := range tagList {
-		tagNameList = append(tagNameList, tag.Name)
-	}
-	tagMapSet := make(map[string]bool)
-	for _, memo := range memos {
-		nodes, err := parser.Parse(tokenizer.Tokenize(memo.Content))
-		if err != nil {
-			return nil, errors.Wrap(err, "failed to parse memo content")
-		}
-
-		// Dynamically upsert tags from memo content.
-		TraverseASTNodes(nodes, func(node ast.Node) {
-			if tagNode, ok := node.(*ast.Tag); ok {
-				tag := tagNode.Content
-				if !slices.Contains(tagNameList, tag) {
-					tagMapSet[tag] = true
-				}
-			}
-		})
-	}
-	suggestions := []string{}
-	for tag := range tagMapSet {
-		suggestions = append(suggestions, tag)
-	}
-	sort.Strings(suggestions)
-
-	return &v1pb.GetTagSuggestionsResponse{
-		Tags: suggestions,
-	}, nil
-}
-
-func (s *APIV1Service) convertTagFromStore(ctx context.Context, tag *store.Tag) (*v1pb.Tag, error) {
-	user, err := s.Store.GetUser(ctx, &store.FindUser{
-		ID: &tag.CreatorID,
-	})
-	if err != nil {
-		return nil, errors.Wrap(err, "failed to get user")
-	}
-	return &v1pb.Tag{
-		Name:    tag.Name,
-		Creator: fmt.Sprintf("%s%d", UserNamePrefix, user.ID),
-	}, nil
-}
-
-func TraverseASTNodes(nodes []ast.Node, fn func(ast.Node)) {
-	for _, node := range nodes {
-		fn(node)
-		switch n := node.(type) {
-		case *ast.Paragraph:
-			TraverseASTNodes(n.Children, fn)
-		case *ast.Heading:
-			TraverseASTNodes(n.Children, fn)
-		case *ast.Blockquote:
-			TraverseASTNodes(n.Children, fn)
-		case *ast.OrderedList:
-			TraverseASTNodes(n.Children, fn)
-		case *ast.UnorderedList:
-			TraverseASTNodes(n.Children, fn)
-		case *ast.TaskList:
-			TraverseASTNodes(n.Children, fn)
-		case *ast.Bold:
-			TraverseASTNodes(n.Children, fn)
-		}
-	}
-}
diff --git a/server/router/api/v1/v1.go b/server/router/api/v1/v1.go
index ac6f93d7..2e747518 100644
--- a/server/router/api/v1/v1.go
+++ b/server/router/api/v1/v1.go
@@ -23,7 +23,6 @@ type APIV1Service struct {
 	v1pb.UnimplementedUserServiceServer
 	v1pb.UnimplementedMemoServiceServer
 	v1pb.UnimplementedResourceServiceServer
-	v1pb.UnimplementedTagServiceServer
 	v1pb.UnimplementedInboxServiceServer
 	v1pb.UnimplementedActivityServiceServer
 	v1pb.UnimplementedWebhookServiceServer
@@ -50,7 +49,6 @@ func NewAPIV1Service(secret string, profile *profile.Profile, store *store.Store
 	v1pb.RegisterAuthServiceServer(grpcServer, apiv1Service)
 	v1pb.RegisterUserServiceServer(grpcServer, apiv1Service)
 	v1pb.RegisterMemoServiceServer(grpcServer, apiv1Service)
-	v1pb.RegisterTagServiceServer(grpcServer, apiv1Service)
 	v1pb.RegisterResourceServiceServer(grpcServer, apiv1Service)
 	v1pb.RegisterInboxServiceServer(grpcServer, apiv1Service)
 	v1pb.RegisterActivityServiceServer(grpcServer, apiv1Service)
@@ -102,9 +100,6 @@ func (s *APIV1Service) RegisterGateway(ctx context.Context, echoServer *echo.Ech
 	if err := v1pb.RegisterMemoServiceHandler(context.Background(), gwMux, conn); err != nil {
 		return err
 	}
-	if err := v1pb.RegisterTagServiceHandler(context.Background(), gwMux, conn); err != nil {
-		return err
-	}
 	if err := v1pb.RegisterResourceServiceHandler(context.Background(), gwMux, conn); err != nil {
 		return err
 	}
diff --git a/store/db/mysql/memo.go b/store/db/mysql/memo.go
index 017b38d9..9f3f30c7 100644
--- a/store/db/mysql/memo.go
+++ b/store/db/mysql/memo.go
@@ -2,6 +2,7 @@ package mysql
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"strings"
 
@@ -11,9 +12,17 @@ import (
 )
 
 func (d *DB) CreateMemo(ctx context.Context, create *store.Memo) (*store.Memo, error) {
-	fields := []string{"`uid`", "`creator_id`", "`content`", "`visibility`"}
-	placeholder := []string{"?", "?", "?", "?"}
-	args := []any{create.UID, create.CreatorID, create.Content, create.Visibility}
+	fields := []string{"`uid`", "`creator_id`", "`content`", "`visibility`", "`tags`"}
+	placeholder := []string{"?", "?", "?", "?", "?"}
+	tags := "[]"
+	if len(create.Tags) != 0 {
+		tagsBytes, err := json.Marshal(create.Tags)
+		if err != nil {
+			return nil, err
+		}
+		tags = string(tagsBytes)
+	}
+	args := []any{create.UID, create.CreatorID, create.Content, create.Visibility, tags}
 
 	stmt := "INSERT INTO `memo` (" + strings.Join(fields, ", ") + ") VALUES (" + strings.Join(placeholder, ", ") + ")"
 	result, err := d.db.ExecContext(ctx, stmt, args...)
@@ -76,6 +85,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		}
 		where = append(where, fmt.Sprintf("`memo`.`visibility` in (%s)", strings.Join(placeholder, ",")))
 	}
+	if v := find.Tag; v != nil {
+		where, args = append(where, "JSON_CONTAINS(`memo`.`tags`, ?, '$')"), append(args, *v)
+	}
 	if find.ExcludeComments {
 		having = append(having, "`parent_id` IS NULL")
 	}
@@ -102,6 +114,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		"UNIX_TIMESTAMP(`memo`.`updated_ts`) AS `updated_ts`",
 		"`memo`.`row_status` AS `row_status`",
 		"`memo`.`visibility` AS `visibility`",
+		"`memo`.`tags` AS `tags`",
 		"IFNULL(`memo_organizer`.`pinned`, 0) AS `pinned`",
 		"`memo_relation`.`related_memo_id` AS `parent_id`",
 	}
@@ -126,6 +139,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	list := make([]*store.Memo, 0)
 	for rows.Next() {
 		var memo store.Memo
+		var tagsBytes []byte
 		dests := []any{
 			&memo.ID,
 			&memo.UID,
@@ -134,6 +148,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 			&memo.UpdatedTs,
 			&memo.RowStatus,
 			&memo.Visibility,
+			&tagsBytes,
 			&memo.Pinned,
 			&memo.ParentID,
 		}
@@ -143,6 +158,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		if err := rows.Scan(dests...); err != nil {
 			return nil, err
 		}
+		if err := json.Unmarshal(tagsBytes, &memo.Tags); err != nil {
+			return nil, errors.Wrap(err, "failed to unmarshal tags")
+		}
 		list = append(list, &memo)
 	}
 
@@ -186,6 +204,13 @@ func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) error {
 	if v := update.Visibility; v != nil {
 		set, args = append(set, "`visibility` = ?"), append(args, *v)
 	}
+	if v := update.Tags; v != nil {
+		tagsBytes, err := json.Marshal(v)
+		if err != nil {
+			return err
+		}
+		set, args = append(set, "`tags` = ?"), append(args, string(tagsBytes))
+	}
 	args = append(args, update.ID)
 
 	stmt := "UPDATE `memo` SET " + strings.Join(set, ", ") + " WHERE `id` = ?"
diff --git a/store/db/mysql/migration/dev/LATEST__SCHEMA.sql b/store/db/mysql/migration/dev/LATEST__SCHEMA.sql
index 7563d8fd..13485010 100644
--- a/store/db/mysql/migration/dev/LATEST__SCHEMA.sql
+++ b/store/db/mysql/migration/dev/LATEST__SCHEMA.sql
@@ -43,7 +43,8 @@ CREATE TABLE `memo` (
   `updated_ts` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
   `row_status` VARCHAR(256) NOT NULL DEFAULT 'NORMAL',
   `content` TEXT NOT NULL,
-  `visibility` VARCHAR(256) NOT NULL DEFAULT 'PRIVATE'
+  `visibility` VARCHAR(256) NOT NULL DEFAULT 'PRIVATE',
+  `tags` JSON NOT NULL
 );
 
 -- memo_organizer
diff --git a/store/db/mysql/migration/prod/0.22/01__memo_tags.sql b/store/db/mysql/migration/prod/0.22/01__memo_tags.sql
new file mode 100644
index 00000000..ad5a397a
--- /dev/null
+++ b/store/db/mysql/migration/prod/0.22/01__memo_tags.sql
@@ -0,0 +1,4 @@
+ALTER TABLE `memo` ADD COLUMN `tags_temp` JSON;
+UPDATE `memo` SET `tags_temp` = '[]';
+ALTER TABLE `memo` DROP COLUMN `tags`;
+ALTER TABLE `memo` CHANGE COLUMN `tags_temp` `tags` JSON NOT NULL;
diff --git a/store/db/postgres/memo.go b/store/db/postgres/memo.go
index 8ea13471..32a9adfe 100644
--- a/store/db/postgres/memo.go
+++ b/store/db/postgres/memo.go
@@ -2,6 +2,7 @@ package postgres
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"strings"
 
@@ -11,8 +12,16 @@ import (
 )
 
 func (d *DB) CreateMemo(ctx context.Context, create *store.Memo) (*store.Memo, error) {
-	fields := []string{"uid", "creator_id", "content", "visibility"}
-	args := []any{create.UID, create.CreatorID, create.Content, create.Visibility}
+	fields := []string{"uid", "creator_id", "content", "visibility", "tags"}
+	tags := "[]"
+	if len(create.Tags) != 0 {
+		tagsBytes, err := json.Marshal(create.Tags)
+		if err != nil {
+			return nil, err
+		}
+		tags = string(tagsBytes)
+	}
+	args := []any{create.UID, create.CreatorID, create.Content, create.Visibility, tags}
 
 	stmt := "INSERT INTO memo (" + strings.Join(fields, ", ") + ") VALUES (" + placeholders(len(args)) + ") RETURNING id, created_ts, updated_ts, row_status"
 	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
@@ -67,6 +76,10 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		}
 		where = append(where, fmt.Sprintf("memo.visibility in (%s)", strings.Join(holders, ", ")))
 	}
+	if v := find.Tag; v != nil {
+		where = append(where, "memo.tags @> "+placeholder(len(args)+1))
+		args = append(args, fmt.Sprintf(`["%s"]`, *v))
+	}
 	if find.ExcludeComments {
 		where = append(where, "memo_relation.related_memo_id IS NULL")
 	}
@@ -93,6 +106,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		`memo.updated_ts AS updated_ts`,
 		`memo.row_status AS row_status`,
 		`memo.visibility AS visibility`,
+		`memo.tags AS tags`,
 		`COALESCE(memo_organizer.pinned, 0) AS pinned`,
 		`memo_relation.related_memo_id AS parent_id`,
 	}
@@ -122,6 +136,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	list := make([]*store.Memo, 0)
 	for rows.Next() {
 		var memo store.Memo
+		var tagsBytes []byte
 		dests := []any{
 			&memo.ID,
 			&memo.UID,
@@ -130,6 +145,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 			&memo.UpdatedTs,
 			&memo.RowStatus,
 			&memo.Visibility,
+			&tagsBytes,
 			&memo.Pinned,
 			&memo.ParentID,
 		}
@@ -139,6 +155,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		if err := rows.Scan(dests...); err != nil {
 			return nil, err
 		}
+		if err := json.Unmarshal(tagsBytes, &memo.Tags); err != nil {
+			return nil, errors.Wrap(err, "failed to unmarshal tags")
+		}
 		list = append(list, &memo)
 	}
 
@@ -182,6 +201,13 @@ func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) error {
 	if v := update.Visibility; v != nil {
 		set, args = append(set, "visibility = "+placeholder(len(args)+1)), append(args, *v)
 	}
+	if v := update.Tags; v != nil {
+		tagsBytes, err := json.Marshal(v)
+		if err != nil {
+			return err
+		}
+		set, args = append(set, "tags = "+placeholder(len(args)+1)), append(args, string(tagsBytes))
+	}
 	stmt := `UPDATE memo SET ` + strings.Join(set, ", ") + ` WHERE id = ` + placeholder(len(args)+1)
 	args = append(args, update.ID)
 	if _, err := d.db.ExecContext(ctx, stmt, args...); err != nil {
diff --git a/store/db/postgres/migration/dev/LATEST__SCHEMA.sql b/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
index 982e28db..dba43e18 100644
--- a/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
+++ b/store/db/postgres/migration/dev/LATEST__SCHEMA.sql
@@ -43,7 +43,8 @@ CREATE TABLE memo (
   updated_ts BIGINT NOT NULL DEFAULT EXTRACT(EPOCH FROM NOW()),
   row_status TEXT NOT NULL DEFAULT 'NORMAL',
   content TEXT NOT NULL,
-  visibility TEXT NOT NULL DEFAULT 'PRIVATE'
+  visibility TEXT NOT NULL DEFAULT 'PRIVATE',
+  tags JSONB NOT NULL DEFAULT '[]'
 );
 
 -- memo_organizer
diff --git a/store/db/postgres/migration/prod/0.22/01__memo_tags.sql b/store/db/postgres/migration/prod/0.22/01__memo_tags.sql
new file mode 100644
index 00000000..53012f98
--- /dev/null
+++ b/store/db/postgres/migration/prod/0.22/01__memo_tags.sql
@@ -0,0 +1 @@
+ALTER TABLE memo ADD COLUMN tags JSONB NOT NULL DEFAULT '[]';
diff --git a/store/db/sqlite/memo.go b/store/db/sqlite/memo.go
index a27d1b76..638c6626 100644
--- a/store/db/sqlite/memo.go
+++ b/store/db/sqlite/memo.go
@@ -2,16 +2,26 @@ package sqlite
 
 import (
 	"context"
+	"encoding/json"
 	"fmt"
 	"strings"
 
+	"github.com/pkg/errors"
 	"github.com/usememos/memos/store"
 )
 
 func (d *DB) CreateMemo(ctx context.Context, create *store.Memo) (*store.Memo, error) {
-	fields := []string{"`uid`", "`creator_id`", "`content`", "`visibility`"}
-	placeholder := []string{"?", "?", "?", "?"}
-	args := []any{create.UID, create.CreatorID, create.Content, create.Visibility}
+	fields := []string{"`uid`", "`creator_id`", "`content`", "`visibility`, `tags`"}
+	placeholder := []string{"?", "?", "?", "?", "?"}
+	tags := "[]"
+	if len(create.Tags) != 0 {
+		tagsBytes, err := json.Marshal(create.Tags)
+		if err != nil {
+			return nil, err
+		}
+		tags = string(tagsBytes)
+	}
+	args := []any{create.UID, create.CreatorID, create.Content, create.Visibility, tags}
 
 	stmt := "INSERT INTO `memo` (" + strings.Join(fields, ", ") + ") VALUES (" + strings.Join(placeholder, ", ") + ") RETURNING `id`, `created_ts`, `updated_ts`, `row_status`"
 	if err := d.db.QueryRowContext(ctx, stmt, args...).Scan(
@@ -66,6 +76,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		}
 		where = append(where, fmt.Sprintf("`memo`.`visibility` IN (%s)", strings.Join(placeholder, ",")))
 	}
+	if v := find.Tag; v != nil {
+		where, args = append(where, "JSON_EXTRACT(`memo`.`tags`, '$') LIKE ?"), append(args, fmt.Sprintf(`%%"%s"%%`, *v))
+	}
 	if find.ExcludeComments {
 		where = append(where, "`parent_id` IS NULL")
 	}
@@ -92,6 +105,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		"`memo`.`updated_ts` AS `updated_ts`",
 		"`memo`.`row_status` AS `row_status`",
 		"`memo`.`visibility` AS `visibility`",
+		"`memo`.`tags` AS `tags`",
 		"IFNULL(`memo_organizer`.`pinned`, 0) AS `pinned`",
 		"`memo_relation`.`related_memo_id` AS `parent_id`",
 	}
@@ -120,6 +134,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 	list := make([]*store.Memo, 0)
 	for rows.Next() {
 		var memo store.Memo
+		var tagsBytes []byte
 		dests := []any{
 			&memo.ID,
 			&memo.UID,
@@ -128,6 +143,7 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 			&memo.UpdatedTs,
 			&memo.RowStatus,
 			&memo.Visibility,
+			&tagsBytes,
 			&memo.Pinned,
 			&memo.ParentID,
 		}
@@ -137,6 +153,9 @@ func (d *DB) ListMemos(ctx context.Context, find *store.FindMemo) ([]*store.Memo
 		if err := rows.Scan(dests...); err != nil {
 			return nil, err
 		}
+		if err := json.Unmarshal(tagsBytes, &memo.Tags); err != nil {
+			return nil, errors.Wrap(err, "failed to unmarshal tags")
+		}
 		list = append(list, &memo)
 	}
 
@@ -167,6 +186,13 @@ func (d *DB) UpdateMemo(ctx context.Context, update *store.UpdateMemo) error {
 	if v := update.Visibility; v != nil {
 		set, args = append(set, "`visibility` = ?"), append(args, *v)
 	}
+	if v := update.Tags; v != nil {
+		tagsBytes, err := json.Marshal(v)
+		if err != nil {
+			return err
+		}
+		set, args = append(set, "`tags` = ?"), append(args, string(tagsBytes))
+	}
 	args = append(args, update.ID)
 
 	stmt := "UPDATE `memo` SET " + strings.Join(set, ", ") + " WHERE `id` = ?"
diff --git a/store/db/sqlite/migration/dev/LATEST__SCHEMA.sql b/store/db/sqlite/migration/dev/LATEST__SCHEMA.sql
index b327a920..231677d4 100644
--- a/store/db/sqlite/migration/dev/LATEST__SCHEMA.sql
+++ b/store/db/sqlite/migration/dev/LATEST__SCHEMA.sql
@@ -46,12 +46,14 @@ CREATE TABLE memo (
   updated_ts BIGINT NOT NULL DEFAULT (strftime('%s', 'now')),
   row_status TEXT NOT NULL CHECK (row_status IN ('NORMAL', 'ARCHIVED')) DEFAULT 'NORMAL',
   content TEXT NOT NULL DEFAULT '',
-  visibility TEXT NOT NULL CHECK (visibility IN ('PUBLIC', 'PROTECTED', 'PRIVATE')) DEFAULT 'PRIVATE'
+  visibility TEXT NOT NULL CHECK (visibility IN ('PUBLIC', 'PROTECTED', 'PRIVATE')) DEFAULT 'PRIVATE',
+  tags TEXT NOT NULL DEFAULT '[]'
 );
 
 CREATE INDEX idx_memo_creator_id ON memo (creator_id);
 CREATE INDEX idx_memo_content ON memo (content);
 CREATE INDEX idx_memo_visibility ON memo (visibility);
+CREATE INDEX idx_memo_tags ON memo (tags);
 
 -- memo_organizer
 CREATE TABLE memo_organizer (
diff --git a/store/db/sqlite/migration/prod/0.22/01__memo_tags.sql b/store/db/sqlite/migration/prod/0.22/01__memo_tags.sql
new file mode 100644
index 00000000..5816269b
--- /dev/null
+++ b/store/db/sqlite/migration/prod/0.22/01__memo_tags.sql
@@ -0,0 +1,3 @@
+ALTER TABLE memo ADD COLUMN tags TEXT NOT NULL DEFAULT '[]';
+
+CREATE INDEX idx_memo_tags ON memo (tags);
diff --git a/store/memo.go b/store/memo.go
index 5de413b9..4d85c066 100644
--- a/store/memo.go
+++ b/store/memo.go
@@ -46,6 +46,7 @@ type Memo struct {
 	// Domain specific fields
 	Content    string
 	Visibility Visibility
+	Tags       []string
 
 	// Composed fields
 	Pinned   bool
@@ -67,6 +68,7 @@ type FindMemo struct {
 	// Domain specific fields
 	ContentSearch   []string
 	VisibilityList  []Visibility
+	Tag             *string
 	ExcludeContent  bool
 	ExcludeComments bool
 	Random          bool
@@ -86,6 +88,7 @@ type UpdateMemo struct {
 	RowStatus  *RowStatus
 	Content    *string
 	Visibility *Visibility
+	Tags       *[]string
 }
 
 type DeleteMemo struct {
diff --git a/web/src/components/CreateTagDialog.tsx b/web/src/components/CreateTagDialog.tsx
deleted file mode 100644
index 7b04e8e0..00000000
--- a/web/src/components/CreateTagDialog.tsx
+++ /dev/null
@@ -1,175 +0,0 @@
-import { Button, IconButton, Input } from "@mui/joy";
-import React, { useEffect, useState } from "react";
-import { toast } from "react-hot-toast";
-import { tagServiceClient } from "@/grpcweb";
-import useCurrentUser from "@/hooks/useCurrentUser";
-import { useTagStore } from "@/store/v1";
-import { useTranslate } from "@/utils/i18n";
-import { TAG_REG } from "@/utils/tag";
-import { generateDialog } from "./Dialog";
-import Icon from "./Icon";
-import OverflowTip from "./kit/OverflowTip";
-
-type Props = DialogProps;
-
-const validateTagName = (tagName: string): boolean => {
-  const matchResult = `#${tagName}`.match(TAG_REG);
-  if (!matchResult || matchResult[1] !== tagName) {
-    return false;
-  }
-  return true;
-};
-
-const CreateTagDialog: React.FC<Props> = (props: Props) => {
-  const { destroy } = props;
-  const t = useTranslate();
-  const currentUser = useCurrentUser();
-  const tagStore = useTagStore();
-  const [tagName, setTagName] = useState<string>("");
-  const [suggestTags, setSuggestTags] = useState<string[]>([]);
-  const [showTagSuggestions, setShowTagSuggestions] = useState<boolean>(false);
-  const tags = Array.from(tagStore.getState().tags);
-  const shownSuggestTags = suggestTags.filter((tag) => !tags.includes(tag));
-
-  useEffect(() => {
-    tagServiceClient
-      .getTagSuggestions({
-        user: currentUser.name,
-      })
-      .then(({ tags }) => {
-        setSuggestTags(tags.filter((tag) => validateTagName(tag)));
-      });
-  }, [tags]);
-
-  const handleTagNameInputKeyDown = (event: React.KeyboardEvent) => {
-    if (event.key === "Enter") {
-      handleSaveBtnClick();
-    }
-  };
-
-  const handleTagNameChanged = (event: React.ChangeEvent<HTMLInputElement>) => {
-    const tag = event.target.value;
-    setTagName(tag.trim());
-  };
-
-  const handleUpsertTag = async (tag: string) => {
-    await tagStore.upsertTag(tag);
-  };
-
-  const handleToggleShowSuggestionTags = () => {
-    setShowTagSuggestions((state) => !state);
-  };
-
-  const handleSaveBtnClick = async () => {
-    if (!validateTagName(tagName)) {
-      toast.error(t("tag.invalid-tag-name"));
-      return;
-    }
-
-    try {
-      await tagStore.upsertTag(tagName);
-      setTagName("");
-    } catch (error: any) {
-      console.error(error);
-      toast.error(error.response.data.message);
-    }
-  };
-
-  const handleDeleteTag = async (tag: string) => {
-    await tagStore.deleteTag(tag);
-  };
-
-  const handleSaveSuggestTagList = async () => {
-    for (const tagName of suggestTags) {
-      if (validateTagName(tagName)) {
-        await tagStore.upsertTag(tagName);
-      }
-    }
-  };
-
-  return (
-    <>
-      <div className="dialog-header-container">
-        <p className="title-text">{t("tag.create-tag")}</p>
-        <IconButton size="sm" onClick={() => destroy()}>
-          <Icon.X className="w-5 h-auto" />
-        </IconButton>
-      </div>
-      <div className="dialog-content-container !w-80">
-        <Input
-          className="mb-2"
-          size="md"
-          placeholder={t("tag.tag-name")}
-          value={tagName}
-          onChange={handleTagNameChanged}
-          onKeyDown={handleTagNameInputKeyDown}
-          fullWidth
-          startDecorator={<Icon.Hash className="w-4 h-auto" />}
-          endDecorator={<Icon.Check onClick={handleSaveBtnClick} className="w-4 h-auto cursor-pointer hover:opacity-80" />}
-        />
-        {tags.length > 0 && (
-          <>
-            <p className="w-full mt-2 mb-1 text-sm text-gray-400">{t("tag.all-tags")}</p>
-            <div className="w-full flex flex-row justify-start items-start flex-wrap">
-              {tags.sort().map((tag) => (
-                <OverflowTip
-                  key={tag}
-                  className="max-w-[120px] text-sm mr-2 mt-1 font-mono cursor-pointer dark:text-gray-300 hover:opacity-60 hover:line-through"
-                >
-                  <span className="w-full" onClick={() => handleDeleteTag(tag)}>
-                    #{tag}
-                  </span>
-                </OverflowTip>
-              ))}
-            </div>
-          </>
-        )}
-
-        {shownSuggestTags.length > 0 && (
-          <>
-            <div className="mt-4 mb-1 text-sm w-full flex flex-row justify-start items-center">
-              <span className="text-gray-400 mr-2">{t("tag.tag-suggestions")}</span>
-              <span
-                className="text-xs border border-gray-200 rounded-md px-1 leading-5 cursor-pointer text-gray-600 hover:shadow dark:border-zinc-700 dark:text-gray-400"
-                onClick={handleToggleShowSuggestionTags}
-              >
-                {showTagSuggestions ? t("tag.hide") : t("tag.show")}
-              </span>
-            </div>
-            {showTagSuggestions && (
-              <>
-                <div className="w-full flex flex-row justify-start items-start flex-wrap mb-2">
-                  {shownSuggestTags.map((tag) => (
-                    <OverflowTip
-                      key={tag}
-                      className="max-w-[120px] text-sm mr-2 mt-1 font-mono cursor-pointer dark:text-gray-300 hover:opacity-60"
-                    >
-                      <span className="w-full" onClick={() => handleUpsertTag(tag)}>
-                        #{tag}
-                      </span>
-                    </OverflowTip>
-                  ))}
-                </div>
-                <Button size="sm" variant="outlined" onClick={handleSaveSuggestTagList}>
-                  {t("tag.save-all")}
-                </Button>
-              </>
-            )}
-          </>
-        )}
-      </div>
-    </>
-  );
-};
-
-function showCreateTagDialog() {
-  generateDialog(
-    {
-      className: "create-tag-dialog",
-      dialogName: "create-tag-dialog",
-    },
-    CreateTagDialog,
-  );
-}
-
-export default showCreateTagDialog;
diff --git a/web/src/components/HomeSidebar/TagsSection.tsx b/web/src/components/HomeSidebar/TagsSection.tsx
index 95ebf504..a06c9334 100644
--- a/web/src/components/HomeSidebar/TagsSection.tsx
+++ b/web/src/components/HomeSidebar/TagsSection.tsx
@@ -1,9 +1,10 @@
-import { Dropdown, Menu, MenuButton, MenuItem } from "@mui/joy";
+import { Dropdown, Menu, MenuButton, MenuItem, Tooltip } from "@mui/joy";
+import toast from "react-hot-toast";
 import useDebounce from "react-use/lib/useDebounce";
+import { memoServiceClient } from "@/grpcweb";
 import { useFilterStore } from "@/store/module";
 import { useMemoList, useTagStore } from "@/store/v1";
 import { useTranslate } from "@/utils/i18n";
-import showCreateTagDialog from "../CreateTagDialog";
 import { showCommonDialog } from "../Dialog/CommonDialog";
 import Icon from "../Icon";
 import showRenameTagDialog from "../RenameTagDialog";
@@ -14,7 +15,9 @@ const TagsSection = () => {
   const tagStore = useTagStore();
   const memoList = useMemoList();
   const filter = filterStore.state;
-  const tags = tagStore.tags;
+  const tagAmounts = Object.entries(tagStore.getState().tagAmounts)
+    .sort((a, b) => a[0].localeCompare(b[0]))
+    .sort((a, b) => b[1] - a[1]);
 
   useDebounce(
     () => {
@@ -24,22 +27,42 @@ const TagsSection = () => {
     [memoList.size()],
   );
 
+  const handleRebuildMemoTags = () => {
+    showCommonDialog({
+      title: "Rebuild tags",
+      content: "It will rebuild tags for all memos, are you sure?",
+      style: "warning",
+      dialogName: "rebuild-memo-tags-dialog",
+      onConfirm: async () => {
+        await memoServiceClient.listMemoTags({
+          parent: "memos/-",
+          rebuild: true,
+        });
+        await tagStore.fetchTags({ skipCache: true });
+        toast.success("Rebuild tags successfully");
+      },
+    });
+  };
+
   return (
     <div className="flex flex-col justify-start items-start w-full mt-3 px-1 h-auto shrink-0 flex-nowrap hide-scrollbar">
-      <div className="flex flex-row justify-start items-center w-full">
-        <span className="text-sm leading-6 font-mono text-gray-400 select-none" onDoubleClick={() => showCreateTagDialog()}>
-          {t("common.tags")}
-        </span>
+      <div className="flex flex-row justify-between items-center w-full mb-1">
+        <span className="text-sm leading-6 font-mono text-gray-400 select-none">{t("common.tags")}</span>
+        <div>
+          <Tooltip title={"Rebuild"} placement="top">
+            <Icon.RefreshCcw className="text-gray-400 w-4 h-auto cursor-pointer hover:opacity-80" onClick={handleRebuildMemoTags} />
+          </Tooltip>
+        </div>
       </div>
-      {tags.size > 0 ? (
-        <div className="flex flex-col justify-start items-start relative w-full h-auto flex-nowrap gap-2 mt-1">
-          {Array.from(tags).map((tag) => (
-            <TagItemContainer key={tag} tag={tag} tagQuery={filter.tag} />
+      {tagAmounts.length > 0 ? (
+        <div className="w-full flex flex-row justify-start items-center relative flex-wrap gap-1">
+          {tagAmounts.map(([tag, amount]) => (
+            <TagContainer key={tag} tag={tag} amount={amount} tagQuery={filter.tag} />
           ))}
         </div>
       ) : (
-        <div className="p-2 border rounded-md flex flex-row justify-start items-start gap-1 text-gray-400 dark:text-gray-500">
-          <Icon.ThumbsUp />
+        <div className="p-2 border border-dashed rounded-md flex flex-row justify-start items-start gap-1 text-gray-400 dark:text-gray-500">
+          <Icon.Tags />
           <p className="mt-0.5 text-sm leading-snug italic">{t("tag.create-tags-guide")}</p>
         </div>
       )}
@@ -47,16 +70,17 @@ const TagsSection = () => {
   );
 };
 
-interface TagItemContainerProps {
+interface TagContainerProps {
   tag: string;
+  amount: number;
   tagQuery?: string;
 }
 
-const TagItemContainer: React.FC<TagItemContainerProps> = (props: TagItemContainerProps) => {
+const TagContainer: React.FC<TagContainerProps> = (props: TagContainerProps) => {
   const t = useTranslate();
   const filterStore = useFilterStore();
   const tagStore = useTagStore();
-  const { tag, tagQuery } = props;
+  const { tag, amount, tagQuery } = props;
   const isActive = tagQuery === tag;
 
   const handleTagClick = () => {
@@ -81,37 +105,34 @@ const TagItemContainer: React.FC<TagItemContainerProps> = (props: TagItemContain
   };
 
   return (
-    <>
-      <div className="relative flex flex-row justify-between items-center w-full leading-6 py-0 mt-px rounded-lg text-sm select-none shrink-0">
-        <div
-          className={`flex flex-row justify-start items-center truncate shrink leading-5 mr-1 text-gray-600 dark:text-gray-400 ${
-            isActive && "!text-blue-600"
-          }`}
-        >
-          <Dropdown>
-            <MenuButton slots={{ root: "div" }}>
-              <div className="shrink-0 group">
-                <Icon.Hash className="group-hover:hidden w-4 h-auto shrink-0 opacity-60 mr-1" />
-                <Icon.MoreVertical className="hidden group-hover:block w-4 h-auto shrink-0 opacity-60 mr-1" />
-              </div>
-            </MenuButton>
-            <Menu size="sm" placement="bottom">
-              <MenuItem onClick={() => showRenameTagDialog({ tag: tag })}>
-                <Icon.Edit3 className="w-4 h-auto" />
-                {t("common.rename")}
-              </MenuItem>
-              <MenuItem color="danger" onClick={handleDeleteTag}>
-                <Icon.Trash className="w-4 h-auto" />
-                {t("common.delete")}
-              </MenuItem>
-            </Menu>
-          </Dropdown>
-          <span className="truncate cursor-pointer hover:opacity-80" onClick={handleTagClick}>
-            {tag}
-          </span>
-        </div>
+    <div
+      className={`shrink-0 w-auto max-w-full border text-sm rounded-md leading-6 flex flex-row justify-start items-center select-none hover:shadow-sm dark:hover:opacity-80 text-gray-600 dark:text-gray-400 dark:border-zinc-800 ${
+        isActive && "bg-blue-50 dark:bg-zinc-800"
+      }`}
+    >
+      <Dropdown>
+        <MenuButton slots={{ root: "div" }}>
+          <div className="shrink-0 group ml-1">
+            <Icon.Hash className="group-hover:hidden w-4 h-auto shrink-0 opacity-60" />
+            <Icon.MoreVertical className="hidden group-hover:block w-4 h-auto shrink-0 opacity-60" />
+          </div>
+        </MenuButton>
+        <Menu size="sm" placement="bottom-start">
+          <MenuItem onClick={() => showRenameTagDialog({ tag: tag })}>
+            <Icon.Edit3 className="w-4 h-auto" />
+            {t("common.rename")}
+          </MenuItem>
+          <MenuItem color="danger" onClick={handleDeleteTag}>
+            <Icon.Trash className="w-4 h-auto" />
+            {t("common.delete")}
+          </MenuItem>
+        </Menu>
+      </Dropdown>
+      <div className="inline-flex flex-nowrap pl-0.5 pr-1 gap-1 cursor-pointer max-w-[calc(100%-20px)]" onClick={handleTagClick}>
+        <span className="truncate">{tag}</span>
+        <span className="opacity-60 shrink-0">({amount})</span>
       </div>
-    </>
+    </div>
   );
 };
 
diff --git a/web/src/components/LearnMore.tsx b/web/src/components/LearnMore.tsx
index d8789543..f067cd87 100644
--- a/web/src/components/LearnMore.tsx
+++ b/web/src/components/LearnMore.tsx
@@ -13,13 +13,11 @@ const LearnMore: React.FC<Props> = (props: Props) => {
   const t = useTranslate();
 
   return (
-    <>
-      <Tooltip title={title ?? t("common.learn-more")} placement="top">
-        <a className={`text-gray-500 dark:text-gray-400 hover:text-blue-600 ${className}`} href={url} target="_blank">
-          <Icon.ExternalLink className="w-4 h-auto" />
-        </a>
-      </Tooltip>
-    </>
+    <Tooltip title={title ?? t("common.learn-more")} placement="top">
+      <a className={`text-gray-500 dark:text-gray-400 hover:text-blue-600 ${className}`} href={url} target="_blank">
+        <Icon.ExternalLink className="w-4 h-auto" />
+      </a>
+    </Tooltip>
   );
 };
 
diff --git a/web/src/components/MemoEditor/ActionButton/TagSelector.tsx b/web/src/components/MemoEditor/ActionButton/TagSelector.tsx
index 72a88c53..d21f2cd5 100644
--- a/web/src/components/MemoEditor/ActionButton/TagSelector.tsx
+++ b/web/src/components/MemoEditor/ActionButton/TagSelector.tsx
@@ -17,7 +17,7 @@ const TagSelector = (props: Props) => {
   const tagStore = useTagStore();
   const [open, setOpen] = useState(false);
   const containerRef = useRef<HTMLDivElement>(null);
-  const tags = Array.from(tagStore.getState().tags);
+  const tags = tagStore.sortedTags();
 
   useEffect(() => {
     (async () => {
diff --git a/web/src/components/MemoEditor/Editor/TagSuggestions.tsx b/web/src/components/MemoEditor/Editor/TagSuggestions.tsx
index ba0a1990..e4f1847e 100644
--- a/web/src/components/MemoEditor/Editor/TagSuggestions.tsx
+++ b/web/src/components/MemoEditor/Editor/TagSuggestions.tsx
@@ -16,8 +16,7 @@ type Position = { left: number; top: number; height: number };
 const TagSuggestions = ({ editorRef, editorActions }: Props) => {
   const [position, setPosition] = useState<Position | null>(null);
   const tagStore = useTagStore();
-  const tagsRef = useRef(Array.from(tagStore.getState().tags));
-  tagsRef.current = Array.from(tagStore.getState().tags);
+  const tags = tagStore.sortedTags();
 
   const [selected, select] = useState(0);
   const selectedRef = useRef(selected);
@@ -37,7 +36,7 @@ const TagSuggestions = ({ editorRef, editorActions }: Props) => {
   const suggestionsRef = useRef<string[]>([]);
   suggestionsRef.current = (() => {
     const search = getCurrentWord()[0].slice(1).toLowerCase();
-    const fuse = new Fuse(tagsRef.current);
+    const fuse = new Fuse(tags);
     return fuse.search(search).map((result) => result.item);
   })();
 
diff --git a/web/src/components/MemoEditor/index.tsx b/web/src/components/MemoEditor/index.tsx
index 2585a3fb..e5079432 100644
--- a/web/src/components/MemoEditor/index.tsx
+++ b/web/src/components/MemoEditor/index.tsx
@@ -7,7 +7,7 @@ import { memoServiceClient } from "@/grpcweb";
 import { TAB_SPACE_WIDTH } from "@/helpers/consts";
 import { isValidUrl } from "@/helpers/utils";
 import useCurrentUser from "@/hooks/useCurrentUser";
-import { useMemoStore, useResourceStore, useUserStore, useWorkspaceSettingStore, useTagStore } from "@/store/v1";
+import { useMemoStore, useResourceStore, useUserStore, useWorkspaceSettingStore } from "@/store/v1";
 import { MemoRelation, MemoRelation_Type } from "@/types/proto/api/v1/memo_relation_service";
 import { Visibility } from "@/types/proto/api/v1/memo_service";
 import { Resource } from "@/types/proto/api/v1/resource_service";
@@ -16,7 +16,6 @@ import { WorkspaceMemoRelatedSetting } from "@/types/proto/api/v1/workspace_sett
 import { WorkspaceSettingKey } from "@/types/proto/store/workspace_setting";
 import { useTranslate } from "@/utils/i18n";
 import { convertVisibilityFromString, convertVisibilityToString } from "@/utils/memo";
-import { extractTagsFromContent } from "@/utils/tag";
 import Icon from "../Icon";
 import VisibilityIcon from "../VisibilityIcon";
 import AddMemoRelationButton from "./ActionButton/AddMemoRelationButton";
@@ -58,7 +57,6 @@ const MemoEditor = (props: Props) => {
   const userStore = useUserStore();
   const memoStore = useMemoStore();
   const resourceStore = useResourceStore();
-  const tagStore = useTagStore();
   const currentUser = useCurrentUser();
   const [state, setState] = useState<State>({
     memoVisibility: Visibility.PRIVATE,
@@ -352,10 +350,6 @@ const MemoEditor = (props: Props) => {
       toast.error(error.details);
     }
 
-    // Batch upsert tags.
-    const tags = await extractTagsFromContent(content);
-    await tagStore.batchUpsertTag(tags);
-
     setState((state) => {
       return {
         ...state,
@@ -447,6 +441,7 @@ const MemoEditor = (props: Props) => {
           </div>
           <div className="shrink-0 flex flex-row justify-end items-center">
             <Button
+              className="!font-normal"
               disabled={!allowSave}
               loading={state.isRequesting}
               endDecorator={<Icon.Send className="w-4 h-auto" />}
diff --git a/web/src/components/RenameTagDialog.tsx b/web/src/components/RenameTagDialog.tsx
index ac9d5c74..c3ef4533 100644
--- a/web/src/components/RenameTagDialog.tsx
+++ b/web/src/components/RenameTagDialog.tsx
@@ -1,8 +1,7 @@
 import { Button, IconButton, Input, List, ListItem } from "@mui/joy";
 import React, { useState } from "react";
 import { toast } from "react-hot-toast";
-import { tagServiceClient } from "@/grpcweb";
-import useCurrentUser from "@/hooks/useCurrentUser";
+import { memoServiceClient } from "@/grpcweb";
 import useLoading from "@/hooks/useLoading";
 import { useFilterStore } from "@/store/module";
 import { useTagStore } from "@/store/v1";
@@ -19,7 +18,6 @@ const RenameTagDialog: React.FC<Props> = (props: Props) => {
   const t = useTranslate();
   const tagStore = useTagStore();
   const filterStore = useFilterStore();
-  const currentUser = useCurrentUser();
   const [newName, setNewName] = useState(tag);
   const requestState = useLoading(false);
 
@@ -38,10 +36,10 @@ const RenameTagDialog: React.FC<Props> = (props: Props) => {
     }
 
     try {
-      await tagServiceClient.renameTag({
-        user: currentUser.name,
-        oldName: tag,
-        newName: newName,
+      await memoServiceClient.renameMemoTag({
+        parent: "memos/-",
+        oldTag: tag,
+        newTag: newName,
       });
       toast.success("Rename tag successfully");
       filterStore.setTagFilter(newName);
diff --git a/web/src/components/SearchBar.tsx b/web/src/components/SearchBar.tsx
index 2e4e500b..a033cea2 100644
--- a/web/src/components/SearchBar.tsx
+++ b/web/src/components/SearchBar.tsx
@@ -1,4 +1,3 @@
-import { Input } from "@mui/joy";
 import { useEffect, useState } from "react";
 import useDebounce from "react-use/lib/useDebounce";
 import { useFilterStore } from "@/store/module";
@@ -28,11 +27,10 @@ const SearchBar = () => {
   };
 
   return (
-    <div className="w-full h-9 flex flex-row justify-start items-center">
-      <Input
-        className="w-full !text-sm !shadow-none !border-gray-200 dark:!border-zinc-800"
-        size="md"
-        startDecorator={<Icon.Search className="w-4 h-auto opacity-30" />}
+    <div className="relative w-full h-auto flex flex-row justify-start items-center">
+      <Icon.Search className="absolute left-3 w-4 h-auto opacity-30" />
+      <input
+        className="w-full text-gray-500 dark:text-gray-400 bg-zinc-50 dark:bg-zinc-900 border dark:border-zinc-800 text-sm leading-6 rounded-lg p-1 pl-8 outline-none"
         placeholder={t("memo.search-placeholder")}
         value={queryText}
         onChange={handleTextQueryInput}
diff --git a/web/src/components/UserStatisticsView.tsx b/web/src/components/UserStatisticsView.tsx
index 004a05a0..0359e495 100644
--- a/web/src/components/UserStatisticsView.tsx
+++ b/web/src/components/UserStatisticsView.tsx
@@ -18,7 +18,7 @@ const UserStatisticsView = (props: Props) => {
   const [isRequesting, setIsRequesting] = useState(false);
   const days = Math.ceil((Date.now() - user.createTime!.getTime()) / 86400000);
   const memos = Object.values(memoStore.getState().memoMapByName);
-  const tags = tagStore.getState().tags.size;
+  const tags = tagStore.sortedTags().length;
 
   useEffect(() => {
     if (memos.length === 0) {
@@ -37,7 +37,7 @@ const UserStatisticsView = (props: Props) => {
   }, [memos.length, user.name]);
 
   return (
-    <div className="w-full border mt-2 py-2 px-3 rounded-md space-y-0.5 text-gray-500 dark:text-gray-400 bg-zinc-50 dark:bg-zinc-900 dark:border-zinc-800">
+    <div className="w-full border mt-2 py-2 px-3 rounded-lg space-y-0.5 text-gray-500 dark:text-gray-400 bg-zinc-50 dark:bg-zinc-900 dark:border-zinc-800">
       <div className="mb-1 w-full flex flex-row justify-between items-center">
         <p className="text-sm font-medium leading-6 dark:text-gray-500">{t("common.statistics")}</p>
       </div>
diff --git a/web/src/grpcweb.ts b/web/src/grpcweb.ts
index 0d20a0ad..abecc81c 100644
--- a/web/src/grpcweb.ts
+++ b/web/src/grpcweb.ts
@@ -6,7 +6,6 @@ import { InboxServiceDefinition } from "./types/proto/api/v1/inbox_service";
 import { MarkdownServiceDefinition } from "./types/proto/api/v1/markdown_service";
 import { MemoServiceDefinition } from "./types/proto/api/v1/memo_service";
 import { ResourceServiceDefinition } from "./types/proto/api/v1/resource_service";
-import { TagServiceDefinition } from "./types/proto/api/v1/tag_service";
 import { UserServiceDefinition } from "./types/proto/api/v1/user_service";
 import { WebhookServiceDefinition } from "./types/proto/api/v1/webhook_service";
 import { WorkspaceServiceDefinition } from "./types/proto/api/v1/workspace_service";
@@ -33,8 +32,6 @@ export const memoServiceClient = clientFactory.create(MemoServiceDefinition, cha
 
 export const resourceServiceClient = clientFactory.create(ResourceServiceDefinition, channel);
 
-export const tagServiceClient = clientFactory.create(TagServiceDefinition, channel);
-
 export const inboxServiceClient = clientFactory.create(InboxServiceDefinition, channel);
 
 export const activityServiceClient = clientFactory.create(ActivityServiceDefinition, channel);
diff --git a/web/src/locales/en.json b/web/src/locales/en.json
index a9e82523..710c236c 100644
--- a/web/src/locales/en.json
+++ b/web/src/locales/en.json
@@ -1,13 +1,4 @@
 {
-  "about": {
-    "about-memos": "About memos",
-    "memos-description": "memos is a web-based note-taking application that you can use to write, organize, and share notes.",
-    "no-server-description": "No description configured for this server.",
-    "other-projects": "Other Projects"
-  },
-  "amount-text": {
-    "memo": "MEMO"
-  },
   "auth": {
     "create-your-account": "Create your account",
     "host-tip": "You are registering as the Site Host.",
@@ -328,7 +319,6 @@
         "locale": "Server Locale",
         "title": "Customize Server"
       },
-      "database-file-size": "Database File Size",
       "disable-password-login": "Disable password login",
       "disable-password-login-final-warning": "Please type \"CONFIRM\" if you know what you are doing.",
       "disable-password-login-warning": "This will disable password login for all users. It is not possible to log in without reverting this setting in the database if your configured identity providers fail. You’ll also have to be extra carefull when removing an identity provider",
@@ -338,24 +328,16 @@
       "enable-password-login-warning": "This will enable password login for all users. Continue only if you want to users to be able to log in using both SSO and password",
       "max-upload-size": "Maximum upload size (MiB)",
       "max-upload-size-hint": "Recommended value is 32 MiB.",
-      "server-name": "Server Name",
-      "vacuum-hint": "Cleans up unused data."
+      "server-name": "Server Name"
     }
   },
   "tag": {
     "all-tags": "All Tags",
     "create-tag": "Create Tag",
     "create-tags-guide": "You can create tags by inputting `#tag`.",
-    "delete-confirm": "Are you sure to delete this tag?",
+    "delete-confirm": "Are you sure to delete this tag? All related memos will be archived.",
     "delete-tag": "Delete Tag",
-    "hide": "Hide",
-    "invalid-tag-name": "Invalid tag name",
-    "no-tag-found": "No tag found",
-    "save-all": "Save all",
-    "show": "Show",
-    "tag-name": "TAG_NAME",
-    "tag-suggestions": "Tag suggestions",
-    "tip-text": "Input `#tag` to create"
+    "no-tag-found": "No tag found"
   },
   "timeline": {
     "title": "Timeline"
diff --git a/web/src/pages/Archived.tsx b/web/src/pages/Archived.tsx
index 67a902ea..1c9a76cb 100644
--- a/web/src/pages/Archived.tsx
+++ b/web/src/pages/Archived.tsx
@@ -39,15 +39,15 @@ const Archived = () => {
   const fetchMemos = async () => {
     const filters = [`creator == "${user.name}"`, `row_status == "ARCHIVED"`];
     const contentSearch: string[] = [];
-    if (tagQuery) {
-      contentSearch.push(JSON.stringify(`#${tagQuery}`));
-    }
     if (textQuery) {
       contentSearch.push(JSON.stringify(textQuery));
     }
     if (contentSearch.length > 0) {
       filters.push(`content_search == [${contentSearch.join(", ")}]`);
     }
+    if (tagQuery) {
+      filters.push(`tag == "${tagQuery}"`);
+    }
     setIsRequesting(true);
     const data = await memoStore.fetchMemos({
       pageSize: DEFAULT_LIST_MEMOS_PAGE_SIZE,
diff --git a/web/src/pages/Explore.tsx b/web/src/pages/Explore.tsx
index d064e2d6..64950749 100644
--- a/web/src/pages/Explore.tsx
+++ b/web/src/pages/Explore.tsx
@@ -35,15 +35,15 @@ const Explore = () => {
   const fetchMemos = async () => {
     const filters = [`row_status == "NORMAL"`, `visibilities == [${user ? "'PUBLIC', 'PROTECTED'" : "'PUBLIC'"}]`];
     const contentSearch: string[] = [];
-    if (tagQuery) {
-      contentSearch.push(JSON.stringify(`#${tagQuery}`));
-    }
     if (textQuery) {
       contentSearch.push(JSON.stringify(textQuery));
     }
     if (contentSearch.length > 0) {
       filters.push(`content_search == [${contentSearch.join(", ")}]`);
     }
+    if (tagQuery) {
+      filters.push(`tag == "${tagQuery}"`);
+    }
     setIsRequesting(true);
     const data = await memoStore.fetchMemos({
       pageSize: DEFAULT_LIST_MEMOS_PAGE_SIZE,
diff --git a/web/src/pages/Home.tsx b/web/src/pages/Home.tsx
index ea1c91a2..8f0dea75 100644
--- a/web/src/pages/Home.tsx
+++ b/web/src/pages/Home.tsx
@@ -41,15 +41,15 @@ const Home = () => {
   const fetchMemos = async () => {
     const filters = [`creator == "${user.name}"`, `row_status == "NORMAL"`, `order_by_pinned == true`];
     const contentSearch: string[] = [];
-    if (tagQuery) {
-      contentSearch.push(JSON.stringify(`#${tagQuery}`));
-    }
     if (textQuery) {
       contentSearch.push(JSON.stringify(textQuery));
     }
     if (contentSearch.length > 0) {
       filters.push(`content_search == [${contentSearch.join(", ")}]`);
     }
+    if (tagQuery) {
+      filters.push(`tag == "${tagQuery}"`);
+    }
     setIsRequesting(true);
     const data = await memoStore.fetchMemos({
       pageSize: DEFAULT_LIST_MEMOS_PAGE_SIZE,
diff --git a/web/src/pages/Timeline.tsx b/web/src/pages/Timeline.tsx
index 2ed62f35..fb95ff64 100644
--- a/web/src/pages/Timeline.tsx
+++ b/web/src/pages/Timeline.tsx
@@ -68,15 +68,15 @@ const Timeline = () => {
     (async () => {
       const filters = [`row_status == "NORMAL"`];
       const contentSearch: string[] = [];
-      if (tagQuery) {
-        contentSearch.push(JSON.stringify(`#${tagQuery}`));
-      }
       if (textQuery) {
         contentSearch.push(JSON.stringify(textQuery));
       }
       if (contentSearch.length > 0) {
         filters.push(`content_search == [${contentSearch.join(", ")}]`);
       }
+      if (tagQuery) {
+        filters.push(`tag == "${tagQuery}"`);
+      }
       const { stats } = await memoServiceClient.getUserMemosStats({
         name: user.name,
         timezone: Intl.DateTimeFormat().resolvedOptions().timeZone,
@@ -89,15 +89,15 @@ const Timeline = () => {
   const fetchMemos = async () => {
     const filters = [`creator == "${user.name}"`, `row_status == "NORMAL"`];
     const contentSearch: string[] = [];
-    if (tagQuery) {
-      contentSearch.push(JSON.stringify(`#${tagQuery}`));
-    }
     if (textQuery) {
       contentSearch.push(JSON.stringify(textQuery));
     }
     if (contentSearch.length > 0) {
       filters.push(`content_search == [${contentSearch.join(", ")}]`);
     }
+    if (tagQuery) {
+      filters.push(`tag == "${tagQuery}"`);
+    }
     if (selectedDay) {
       const selectedDateStamp = getTimeStampByDate(selectedDay) + new Date().getTimezoneOffset() * 60 * 1000;
       filters.push(
diff --git a/web/src/pages/UserProfile.tsx b/web/src/pages/UserProfile.tsx
index a23e81a0..f0648137 100644
--- a/web/src/pages/UserProfile.tsx
+++ b/web/src/pages/UserProfile.tsx
@@ -71,15 +71,15 @@ const UserProfile = () => {
 
     const filters = [`creator == "${user.name}"`, `row_status == "NORMAL"`, `order_by_pinned == true`];
     const contentSearch: string[] = [];
-    if (tagQuery) {
-      contentSearch.push(JSON.stringify(`#${tagQuery}`));
-    }
     if (textQuery) {
       contentSearch.push(JSON.stringify(textQuery));
     }
     if (contentSearch.length > 0) {
       filters.push(`content_search == [${contentSearch.join(", ")}]`);
     }
+    if (tagQuery) {
+      filters.push(`tag == "${tagQuery}"`);
+    }
     setIsRequesting(true);
     const data = await memoStore.fetchMemos({
       pageSize: DEFAULT_LIST_MEMOS_PAGE_SIZE,
diff --git a/web/src/store/v1/tag.ts b/web/src/store/v1/tag.ts
index 8d018f94..bf7142a0 100644
--- a/web/src/store/v1/tag.ts
+++ b/web/src/store/v1/tag.ts
@@ -1,53 +1,41 @@
 import { create } from "zustand";
 import { combine } from "zustand/middleware";
-import { tagServiceClient } from "@/grpcweb";
+import { memoServiceClient } from "@/grpcweb";
 
 interface State {
-  tags: Set<string>;
+  tagAmounts: Record<string, number>;
 }
 
 const getDefaultState = (): State => ({
-  tags: new Set(),
+  tagAmounts: {},
 });
 
 export const useTagStore = create(
   combine(getDefaultState(), (set, get) => ({
     setState: (state: State) => set(state),
     getState: () => get(),
+    sortedTags: () => {
+      return Object.entries(get().tagAmounts)
+        .sort((a, b) => a[0].localeCompare(b[0]))
+        .sort((a, b) => b[1] - a[1])
+        .map(([tag]) => tag);
+    },
     fetchTags: async (options?: { skipCache: boolean }) => {
-      const { tags: tagsCache } = get();
-      if (tagsCache.size && !options?.skipCache) {
-        return tagsCache;
+      const { tagAmounts: cache } = get();
+      if (cache.length > 0 && !options?.skipCache) {
+        return cache;
       }
-      const { tags } = await tagServiceClient.listTags({});
-      set({ tags: new Set(tags.map((tag) => tag.name)) });
-      return tags;
-    },
-    upsertTag: async (tagName: string) => {
-      await tagServiceClient.upsertTag({
-        name: tagName,
-      });
-      const { tags } = get();
-      set({ tags: new Set([...tags, tagName]) });
-    },
-    batchUpsertTag: async (tagNames: string[]) => {
-      await tagServiceClient.batchUpsertTag({
-        requests: tagNames.map((name) => ({
-          name,
-        })),
-      });
-      const { tags } = get();
-      set({ tags: new Set([...tags, ...tagNames]) });
+      const { tagAmounts } = await memoServiceClient.listMemoTags({ parent: "memos/-" });
+      set({ tagAmounts });
     },
     deleteTag: async (tagName: string) => {
-      await tagServiceClient.deleteTag({
-        tag: {
-          name: tagName,
-        },
+      await memoServiceClient.deleteMemoTag({
+        parent: "memos/-",
+        tag: tagName,
       });
-      const { tags } = get();
-      tags.delete(tagName);
-      set({ tags });
+      const { tagAmounts } = get();
+      delete tagAmounts[tagName];
+      set({ tagAmounts });
     },
   })),
 );
diff --git a/web/src/utils/tag.ts b/web/src/utils/tag.ts
deleted file mode 100644
index 911f8161..00000000
--- a/web/src/utils/tag.ts
+++ /dev/null
@@ -1,34 +0,0 @@
-import { markdownServiceClient } from "@/grpcweb";
-import { Node, NodeType, TagNode } from "@/types/proto/api/v1/markdown_service";
-
-export const TAG_REG = /#([^\s#,]+)/;
-
-// extractTagsFromContent extracts tags from content.
-export const extractTagsFromContent = async (content: string) => {
-  const { nodes } = await markdownServiceClient.parseMarkdown({ markdown: content });
-  const tags = new Set<string>();
-
-  const traverse = (nodes: Node[], handle: (node: Node) => void) => {
-    for (const node of nodes) {
-      if (!node) {
-        continue;
-      }
-
-      handle(node);
-      if (node.type === "PARAGRAPH" || node.type === "ORDERED_LIST" || node.type === "UNORDERED_LIST") {
-        const children = node.paragraphNode?.children || node.orderedListNode?.children || node.unorderedListNode?.children;
-        if (Array.isArray(children)) {
-          traverse(children, handle);
-        }
-      }
-    }
-  };
-
-  traverse(nodes, (node) => {
-    if (node.type === NodeType.TAG && node.tagNode) {
-      tags.add((node.tagNode as TagNode).content);
-    }
-  });
-
-  return Array.from(tags);
-};