diff --git a/src/main/thrift/Trace.thrift b/src/main/thrift/Trace.thrift
index ee0c643ca..8886d9069 100644
--- a/src/main/thrift/Trace.thrift
+++ b/src/main/thrift/Trace.thrift
@@ -15,6 +15,7 @@ struct ApiAnnotation {
   5: optional list<string> parameterValue
   6: optional i32 line,
 }
+
 struct Span {
   1: string agentId
   
@@ -34,4 +35,18 @@ struct Span {
   
   12: list<Annotation> annotations
   13: optional i16 flag = 0
+  
+  14: list<TerminalSpan> spans
+}
+
+struct TerminalSpan {
+  1: i64 startTime
+  2: i32 elapsed
+  
+  3: string rpc
+  4: string serviceName
+  5: i16 serviceType
+  6: string endPoint
+  
+  7: list<Annotation> annotations
 }
\ No newline at end of file