diff --git a/odpf/optimus/runtime_service.proto b/odpf/optimus/runtime_service.proto
index 4533701e..1909cb96 100644
--- a/odpf/optimus/runtime_service.proto
+++ b/odpf/optimus/runtime_service.proto
@@ -168,6 +168,11 @@ service RuntimeService {
             body: "*"
         };
     }
+    rpc ReplayDryRun(ReplayDryRunRequest) returns (ReplayDryRunResponse) {
+        option (google.api.http) = {
+            get: "/api/v1/project/{project_name}/job/{job_name}/replay-dry-run"
+        };
+    }
     // TODO(kush.sharma): disabled ATM
     //rpc DeleteResource(DeleteResourceRequest) returns (DeleteResourceResponse) {}
 
@@ -544,3 +549,22 @@ message UpdateResourceResponse {
     bool success = 1;
     string message = 2;
 }
+
+message ReplayDryRunRequest {
+    string project_name = 1;
+    string job_name = 2;
+    string namespace = 3;
+    string start_date = 4;
+    string end_date = 5;
+}
+
+message ReplayDryRunResponse {
+    bool success = 1;
+    ReplayExecutionTreeNode response = 2;
+}
+
+message ReplayExecutionTreeNode {
+    string job_name = 1;
+    repeated ReplayExecutionTreeNode dependents = 2;
+    repeated google.protobuf.Timestamp runs = 3;
+}