diff --git a/builtins/web/timers.cpp b/builtins/web/timers.cpp
index d4e9a8cb..fe3519b7 100644
--- a/builtins/web/timers.cpp
+++ b/builtins/web/timers.cpp
@@ -229,4 +229,12 @@ bool install(api::Engine *engine) {
   return JS_DefineFunctions(engine->cx(), engine->global(), methods);
 }
 
+void reset() {
+  for (auto &[id, timer] : TIMERS_MAP->timers_) {
+    timer->cancel(ENGINE);
+  }
+  TIMERS_MAP->timers_.clear();
+  TIMERS_MAP->next_timer_id = 1;
+}
+
 } // namespace builtins::web::timers
diff --git a/builtins/web/timers.h b/builtins/web/timers.h
index f88d36bd..38a6cba7 100644
--- a/builtins/web/timers.h
+++ b/builtins/web/timers.h
@@ -14,6 +14,7 @@ bool set_interval(JSContext *cx, HandleObject handler, JS::HandleValueVector arg
 void clear_timeout_or_interval(int32_t timer_id);
 
 bool install(api::Engine *engine);
+void reset();
 
 } // namespace builtins::web::timers
 
diff --git a/include/extension-api.h b/include/extension-api.h
index 55af98e7..68da8ab6 100644
--- a/include/extension-api.h
+++ b/include/extension-api.h
@@ -172,6 +172,7 @@ class Engine {
   void report_unhandled_promise_rejections();
   static void clear_unhandled_promise_rejections();
 
+  void reset();
   void abort(const char *reason);
 
   static bool debug_logging_enabled();
diff --git a/runtime/engine.cpp b/runtime/engine.cpp
index e9da55dd..ae5f025a 100644
--- a/runtime/engine.cpp
+++ b/runtime/engine.cpp
@@ -3,6 +3,7 @@
 #include "debugger.h"
 #include "encode.h"
 #include "event_loop.h"
+#include "../builtins/web/timers.h"
 #include "script_loader.h"
 
 #include "js/CompilationAndEvaluation.h"
@@ -708,3 +709,11 @@ void Engine::report_unhandled_promise_rejections() {
 void Engine::clear_unhandled_promise_rejections() {
   JS::SetClear(CONTEXT, unhandledRejectedPromises);
 }
+void Engine::reset() {
+  clear_unhandled_promise_rejections();
+  core::EventLoop::reset(this);
+  builtins::web::timers::reset();
+  core::EventLoop::reset(this);
+  JS::PrepareForFullGC(cx());
+  JS::NonIncrementalGC(cx(), JS::GCOptions::Normal, JS::GCReason::API);
+}
diff --git a/runtime/event_loop.cpp b/runtime/event_loop.cpp
index cdcdaabf..a41994b8 100644
--- a/runtime/event_loop.cpp
+++ b/runtime/event_loop.cpp
@@ -99,4 +99,13 @@ bool EventLoop::run_event_loop(api::Engine *engine, double total_compute) {
 
 void EventLoop::init(JSContext *cx) { queue.init(cx); }
 
+void EventLoop::reset(api::Engine *engine) {
+  auto &q = queue.get();
+  for (const auto& task : q.tasks) {
+    task->cancel(engine);
+  }
+  q.tasks.clear();
+  q.interest_cnt = 0;
+}
+
 } // namespace core
diff --git a/runtime/event_loop.h b/runtime/event_loop.h
index acca516c..d8354e1b 100644
--- a/runtime/event_loop.h
+++ b/runtime/event_loop.h
@@ -41,6 +41,11 @@ class EventLoop {
    * Remove a queued async task.
    */
   static bool cancel_async_task(api::Engine *engine, const RefPtr<api::AsyncTask>& task);
+
+  /**
+   * Reset the event loop state, cancelling all pending tasks and clearing interest count.
+   */
+  static void reset(api::Engine *engine);
 };
 
 } // namespace core