diff --git a/README.md b/README.md
index a6f535d..f05bf2d 100644
--- a/README.md
+++ b/README.md
@@ -67,5 +67,6 @@ services that Sagittarius must implement as a server.
     ├── flow_definition - Defines a definition for a Flow
     ├── runtime_function_definition - Defines types for runtime functions
     ├── struct - Defines types for json representations
-    └── translation - Contains translations with country codes and translated messages
+    ├── translation - Contains translations with country codes and translated messages
+    └── version - Contains verion type for definitions
 ```
diff --git a/proto/sagittarius/sagittarius.text_execution.proto b/proto/sagittarius/sagittarius.text_execution.proto
index 3b6fe5f..b3d65ed 100644
--- a/proto/sagittarius/sagittarius.text_execution.proto
+++ b/proto/sagittarius/sagittarius.text_execution.proto
@@ -22,6 +22,26 @@ message TestExecutionResponse {
 }
 
 message Log {
+  oneof kind {
+    ApplicationLog application_log = 1;
+    SuccessLog success_log = 2;
+    RuntimeErrorLog error_log = 3;
+  }
+}
+
+message SuccessLog {
+  int64 note_id = 1;
+  shared.Value result = 2;
+}
+
+message RuntimeErrorLog {
+  int64 note_id = 1;
+  string error_code = 2;
+  string error_message = 3;
+  optional string suggestion = 4;
+}
+
+message ApplicationLog {
     string message = 1;
     string level = 2;
     string timestamp = 3;