diff --git a/runtime/actions.cpp b/runtime/actions.cpp
index 46da58b..edc1d1f 100644
--- a/runtime/actions.cpp
+++ b/runtime/actions.cpp
@@ -7,6 +7,8 @@ auto sliger::rpc::action::RunDebug::perform_action(
 {
     auto program = this->instructions;
     vm.load_and_run(program);
+    writer->write("{ \"ok\": true }");
+    writer->flush();
 };
 
 auto sliger::rpc::action::FlameGraph::perform_action(
@@ -15,10 +17,10 @@ auto sliger::rpc::action::FlameGraph::perform_action(
 {
     auto json = vm.flame_graph_json();
     if (json) {
-        writer->write(
-            std::format("{{ ok: true, flameGraph: \"{}\"  }}", json.value()));
+        writer->write(std::format(
+            "{{ \"ok\": true, \"flameGraph\": \"{}\"  }}", json.value()));
     } else {
-        writer->write("null");
+        writer->write("{ \"ok\": false }");
     }
     writer->flush();
 };
@@ -29,10 +31,10 @@ auto sliger::rpc::action::CodeCoverage::perform_action(
 {
     auto json = vm.code_coverage_json();
     if (json) {
-        writer->write(
-            std::format("{{ ok: true, codeCoverage: \"{}\"  }}", json.value()));
+        writer->write(std::format(
+            "{{ \"ok\": true, \"codeCoverage\": \"{}\"  }}", json.value()));
     } else {
-        writer->write("{ ok: false }");
+        writer->write("{ \"ok\": false }");
     }
     writer->flush();
 };