diff --git a/proto/spaceone/api/opsflow/comment.proto b/proto/spaceone/api/opsflow/comment.proto
new file mode 100644
index 000000000..496b801b0
--- /dev/null
+++ b/proto/spaceone/api/opsflow/comment.proto
@@ -0,0 +1,124 @@
+syntax = "proto3";
+
+package spaceone.api.opsflow.v1;
+
+option go_package = "github.com/cloudforet-io/api/dist/go/spaceone/api/opsflow/v1";
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/struct.proto";
+import "google/api/annotations.proto";
+import "spaceone/api/core/v2/query.proto";
+
+
+service Comment {
+    rpc create (CommentCreateRequest) returns (CommentInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/comment/create"
+            body: "*"
+        };
+    }
+    rpc update (CommentUpdateRequest) returns (CommentInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/comment/update"
+            body: "*"
+        };
+    }
+    rpc delete (CommentRequest) returns (google.protobuf.Empty) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/comment/delete"
+            body: "*"
+        };
+    }
+    rpc get (CommentRequest) returns (CommentInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/comment/get"
+            body: "*"
+        };
+    }
+    rpc list (CommentSearchQuery) returns (CommentsInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/comment/list"
+            body: "*"
+        };
+    }
+    rpc stat (CommentStatQuery) returns (google.protobuf.Struct) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/comment/stat"
+            body: "*"
+        };
+    }
+}
+
+message Mentions {
+  repeated string USER = 1;
+  repeated string USER_GROUP = 2;
+}
+
+message CommentCreateRequest {
+    string task_id = 1;
+    string comment = 2;
+    // +optional
+    Mentions mentions = 3;
+}
+
+message CommentUpdateRequest {
+    string comment_id = 1;
+    string comment = 2;
+    // +optional
+    Mentions mentions = 3;
+}
+
+message CommentRequest {
+    string comment_id = 1;
+}
+
+message CommentSearchQuery {
+    // +optional
+    spaceone.api.core.v2.Query query = 1;
+    // +optional
+    string task_id = 2;
+    // +optional
+    string comment_id = 3;
+    // +optional
+    CommentInfo.CommentType comment_type = 4;
+
+    // +optional
+    string workspace_id = 11;
+    // +optional
+    string project_id = 12;
+    // +optional
+    string user_group_id = 13;
+    // +optional
+    string user_id = 14;
+}
+
+message CommentInfo {
+    enum CommentType {
+        COMMENT_TYPE_NONE = 0;
+        TASK_DESCRIPTION = 1;
+        COMMENT = 2;
+    }
+
+    string comment_id = 1;
+    string comment = 2;
+    CommentType comment_type = 3;
+    bool is_edited = 4;
+    Mentions mentions = 5;
+
+    string domain_id = 21;
+    string workspace_id = 22;
+    string project_id = 23;
+    string task_id = 24;
+
+    string created_at = 31;
+    string updated_at = 32;
+}
+
+message CommentsInfo {
+    repeated CommentInfo results = 1;
+    int32 total_count = 2;
+}
+
+message CommentStatQuery {
+    spaceone.api.core.v2.StatisticsQuery query = 1;
+}
diff --git a/proto/spaceone/api/opsflow/event.proto b/proto/spaceone/api/opsflow/event.proto
new file mode 100644
index 000000000..dc4aff4a6
--- /dev/null
+++ b/proto/spaceone/api/opsflow/event.proto
@@ -0,0 +1,78 @@
+syntax = "proto3";
+
+package spaceone.api.opsflow.v1;
+
+option go_package = "github.com/cloudforet-io/api/dist/go/spaceone/api/opsflow/v1";
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/struct.proto";
+import "google/api/annotations.proto";
+import "spaceone/api/core/v2/query.proto";
+import "spaceone/api/opsflow/comment.proto";
+
+
+service Event {
+    rpc list (EventSearchQuery) returns (EventsInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/event/list"
+            body: "*"
+        };
+    }
+    rpc stat (EventStatQuery) returns (google.protobuf.Struct) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/event/stat"
+            body: "*"
+        };
+    }
+}
+
+message EventSearchQuery {
+    // +optional
+    spaceone.api.core.v2.Query query = 1;
+    // +optional
+    string task_id = 2;
+    // +optional
+    string event_id = 3;
+    // +optional
+    string workspace_id = 4;
+    // +optional
+    string project_id = 5;
+    // +optional
+    string user_type = 6;
+    // +optional
+    string user_id = 7;
+    // +optional
+    EventInfo.EventType event_type = 8;
+}
+
+message EventInfo {
+    enum EventType {
+        SELECTION_NONE = 0;
+        CREATED = 1;
+        UPDATED = 2;
+        CHANGE_STATUS = 3;
+        COMMENTED = 4;
+    }
+    string event_id = 1;
+    EventType event_type = 2;
+    string name = 3;
+    string description = 4;
+    string user_type = 5;
+    string user_id = 6;
+
+    string domain_id = 21;
+    string workspace_id = 22;
+    string project_id = 23;
+    string task_id = 24;
+
+    string created_at = 31;
+}
+
+message EventsInfo {
+    repeated EventInfo results = 1;
+    int32 total_count = 2;
+}
+
+message EventStatQuery {
+    spaceone.api.core.v2.StatisticsQuery query = 1;
+}
diff --git a/proto/spaceone/api/opsflow/task.proto b/proto/spaceone/api/opsflow/task.proto
new file mode 100644
index 000000000..1e7447e22
--- /dev/null
+++ b/proto/spaceone/api/opsflow/task.proto
@@ -0,0 +1,172 @@
+syntax = "proto3";
+
+package spaceone.api.opsflow.v1;
+
+option go_package = "github.com/cloudforet-io/api/dist/go/spaceone/api/opsflow/v1";
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/struct.proto";
+import "google/api/annotations.proto";
+import "spaceone/api/core/v2/query.proto";
+import "spaceone/api/opsflow/task_category.proto";
+import "spaceone/api/opsflow/comment.proto";
+import "spaceone/api/file_manager/v1/file.proto";
+
+
+service Task {
+    rpc create (TaskCreateRequest) returns (TaskInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/create"
+            body: "*"
+        };
+    }
+    rpc update (TaskUpdateRequest) returns (TaskInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/update"
+            body: "*"
+        };
+    }
+    rpc change_status (TaskStatusRequest) returns (TaskInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/change_status"
+            body: "*"
+        };
+    }
+    rpc delete (TaskRequest) returns (google.protobuf.Empty) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/delete"
+            body: "*"
+        };
+    }
+    rpc get (TaskRequest) returns (TaskInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/get"
+            body: "*"
+        };
+    }
+    rpc list (TaskSearchQuery) returns (TasksInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/list"
+            body: "*"
+        };
+    }
+    rpc stat (TaskStatQuery) returns (google.protobuf.Struct) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task/stat"
+            body: "*"
+        };
+    }
+}
+
+enum TaskPriority {
+    TASK_PRIORITY_NONE = 0;
+    HIGH = 1;
+    MEDIUM = 2;
+    LOW = 3;
+}
+
+message TaskCreateRequest {
+    string name = 1;
+    string status = 2;
+    // +optional
+    TaskPriority priority = 3;
+    // +optional
+    string description = 4;
+    // +optional
+    repeated string files = 5;
+    // +optional
+    Mentions mentions = 6;
+    // +optional
+    string assignee = 7;
+    // +optional
+    google.protobuf.Struct data = 8;
+    string project_id = 21;
+    string task_type_id = 22;
+}
+
+message TaskUpdateRequest {
+    string task_id = 1;
+    // +optional
+    string name = 2;
+    // +optional
+    TaskPriority priority = 3;
+    // +optional
+    string description = 4;
+    // +optional
+    repeated string files = 5;
+    // +optional
+    Mentions mentions = 6;
+    // +optional
+    string assignee = 7;
+    // +optional
+    google.protobuf.Struct data = 8;
+    // +optional
+    string project_id = 21;
+}
+
+message TaskStatusRequest {
+    string task_id = 1;
+    string status = 2;
+    // +optional
+    string assignee = 3;
+    // +optional
+    string comment = 4;
+}
+
+message TaskRequest {
+    string task_id = 1;
+}
+
+message TaskSearchQuery {
+    // +optional
+    spaceone.api.core.v2.Query query = 1;
+    // +optional
+    string task_id = 2;
+    // +optional
+    string name = 3;
+    // +optional
+    string status = 4;
+    // +optional
+    spaceone.api.opsflow.v1.StatusType status_type = 5;
+    // +optional
+    TaskPriority priority = 6;
+    // +optional
+    string workspace_id = 11;
+    // +optional
+    string project_id = 12;
+    // +optional
+    string task_category_id = 13;
+    // +optional
+    string task_type_id = 14;
+}
+
+message TaskInfo {
+    string task_id = 1;
+    string name = 2;
+    string status = 3;
+    spaceone.api.opsflow.v1.StatusType status_type = 4;
+    TaskPriority priority = 5;
+    string description = 6;
+    google.protobuf.Struct data = 7;
+    repeated spaceone.api.file_manager.v1.FileInfo files = 8;
+
+    string domain_id = 21;
+    string workspace_id = 22;
+    string project_id = 23;
+    string task_category_id = 24;
+    string task_type_id = 25;
+
+    string created_at = 31;
+    string started_at = 32;
+    string updated_at = 33;
+    string completed_at = 34;
+}
+
+message TasksInfo {
+    repeated TaskInfo results = 1;
+    int32 total_count = 2;
+}
+
+message TaskStatQuery {
+    spaceone.api.core.v2.StatisticsQuery query = 1;
+}
diff --git a/proto/spaceone/api/workflow/task_category.proto b/proto/spaceone/api/opsflow/task_category.proto
similarity index 86%
rename from proto/spaceone/api/workflow/task_category.proto
rename to proto/spaceone/api/opsflow/task_category.proto
index 58cb8672d..18a598532 100644
--- a/proto/spaceone/api/workflow/task_category.proto
+++ b/proto/spaceone/api/opsflow/task_category.proto
@@ -1,8 +1,8 @@
 syntax = "proto3";
 
-package spaceone.api.workflow.v1;
+package spaceone.api.opsflow.v1;
 
-option go_package = "github.com/cloudforet-io/api/dist/go/spaceone/api/workflow/v1";
+option go_package = "github.com/cloudforet-io/api/dist/go/spaceone/api/opsflow/v1";
 
 import "google/protobuf/empty.proto";
 import "google/protobuf/struct.proto";
@@ -13,50 +13,50 @@ import "spaceone/api/core/v2/query.proto";
 service TaskCategory {
     rpc create (TaskCategoryCreateRequest) returns (TaskCategoryInfo) {
         option (google.api.http) = {
-            post: "/workflow/v1/task-category/create"
+            post: "/opsflow/v1/task-category/create"
             body: "*"
         };
     }
     rpc update (TaskCategoryUpdateRequest) returns (TaskCategoryInfo) {
         option (google.api.http) = {
-            post: "/workflow/v1/task-category/update"
+            post: "/opsflow/v1/task-category/update"
             body: "*"
         };
     }
     rpc delete (TaskCategoryRequest) returns (google.protobuf.Empty) {
         option (google.api.http) = {
-            post: "/workflow/v1/task-category/delete"
+            post: "/opsflow/v1/task-category/delete"
             body: "*"
         };
     }
     rpc get (TaskCategoryRequest) returns (TaskCategoryInfo) {
         option (google.api.http) = {
-            post: "/workflow/v1/task-category/get"
+            post: "/opsflow/v1/task-category/get"
             body: "*"
         };
     }
     rpc list (TaskCategorySearchQuery) returns (TaskCategoriesInfo) {
         option (google.api.http) = {
-            post: "/workflow/v1/task-category/list"
+            post: "/opsflow/v1/task-category/list"
             body: "*"
         };
     }
     rpc stat (TaskCategoryStatQuery) returns (google.protobuf.Struct) {
         option (google.api.http) = {
-            post: "/workflow/v1/task-category/stat"
+            post: "/opsflow/v1/task-category/stat"
             body: "*"
         };
     }
 }
 
-message StatusOption {
-    enum StatusType {
-        STATUS_NONE = 0;
-        TODO = 1;
-        IN_PROGRESS = 2;
-        COMPLETED = 3;
-    }
+enum StatusType {
+    STATUS_NONE = 0;
+    TODO = 1;
+    IN_PROGRESS = 2;
+    COMPLETED = 3;
+}
 
+message StatusOption {
     string name = 1;
     string color = 2;
     StatusType status_type = 3;
diff --git a/proto/spaceone/api/opsflow/task_type.proto b/proto/spaceone/api/opsflow/task_type.proto
new file mode 100644
index 000000000..81363f246
--- /dev/null
+++ b/proto/spaceone/api/opsflow/task_type.proto
@@ -0,0 +1,112 @@
+syntax = "proto3";
+
+package spaceone.api.opsflow.v1;
+
+option go_package = "github.com/cloudforet-io/api/dist/go/spaceone/api/opsflow/v1";
+
+import "google/protobuf/empty.proto";
+import "google/protobuf/struct.proto";
+import "google/api/annotations.proto";
+import "spaceone/api/core/v2/query.proto";
+import "spaceone/api/opsflow/task_category.proto";
+
+
+service TaskType {
+    rpc create (TaskTypeCreateRequest) returns (TaskTypeInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task-type/create"
+            body: "*"
+        };
+    }
+    rpc update (TaskTypeUpdateRequest) returns (TaskTypeInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task-type/update"
+            body: "*"
+        };
+    }
+    rpc delete (TaskTypeRequest) returns (google.protobuf.Empty) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task-type/delete"
+            body: "*"
+        };
+    }
+    rpc get (TaskTypeRequest) returns (TaskTypeInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task-type/get"
+            body: "*"
+        };
+    }
+    rpc list (TaskTypeSearchQuery) returns (TaskTypesInfo) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task-type/list"
+            body: "*"
+        };
+    }
+    rpc stat (TaskTypeStatQuery) returns (google.protobuf.Struct) {
+        option (google.api.http) = {
+            post: "/opsflow/v1/task-type/stat"
+            body: "*"
+        };
+    }
+}
+
+message TaskTypeCreateRequest {
+    string name = 1;
+    // +optional
+    string description = 2;
+    // +optional
+    repeated spaceone.api.opsflow.v1.TaskField fields = 3;
+    // +optional
+    google.protobuf.Struct tags = 11;
+    string category_id = 21;
+}
+
+message TaskTypeUpdateRequest {
+    string task_type_id = 1;
+    // +optional
+    string name = 2;
+    // +optional
+    string description = 3;
+    // +optional
+    repeated spaceone.api.opsflow.v1.TaskField fields = 4;
+    // +optional
+    google.protobuf.Struct tags = 11;
+    // +optional
+    string category_id = 21;
+}
+
+message TaskTypeRequest {
+    string task_type_id = 1;
+}
+
+message TaskTypeSearchQuery {
+    // +optional
+    spaceone.api.core.v2.Query query = 1;
+    // +optional
+    string task_type_id = 2;
+    // +optional
+    string name = 3;
+}
+
+message TaskTypeInfo {
+    string task_type_id = 1;
+    string name = 2;
+    string description = 3;
+    repeated spaceone.api.opsflow.v1.TaskField fields = 4;
+    google.protobuf.Struct tags = 11;
+
+    string domain_id = 21;
+    string category_id = 22;
+
+    string created_at = 31;
+    string updated_at = 32;
+}
+
+message TaskTypesInfo {
+    repeated TaskTypeInfo results = 1;
+    int32 total_count = 2;
+}
+
+message TaskTypeStatQuery {
+    spaceone.api.core.v2.StatisticsQuery query = 1;
+}