diff --git a/tests/test_async_helpers.py b/tests/test_async_helpers.py
new file mode 100644
index 0000000..4499ce9
--- /dev/null
+++ b/tests/test_async_helpers.py
@@ -0,0 +1,104 @@
+import asyncio
+import importlib.util
+import sys
+import types
+import unittest
+from pathlib import Path
+
+
+class _FakePromptQueue:
+    def __init__(self):
+        self.items = []
+
+    def put(self, item):
+        self.items.append(item)
+
+
+class _FakePromptServer:
+    def __init__(self):
+        self.number = 0
+        self.prompt_queue = _FakePromptQueue()
+
+    def trigger_on_prompt(self, payload):
+        return payload
+
+
+def _bootstrap_package(package_name):
+    for mod_name in list(sys.modules):
+        if mod_name == package_name or mod_name.startswith(f"{package_name}."):
+            del sys.modules[mod_name]
+
+    root_pkg = types.ModuleType(package_name)
+    root_pkg.__path__ = []
+    sys.modules[package_name] = root_pkg
+
+    utils_pkg = types.ModuleType(f"{package_name}.utils")
+    utils_pkg.__path__ = []
+    sys.modules[f"{package_name}.utils"] = utils_pkg
+
+    network_module = types.ModuleType(f"{package_name}.utils.network")
+    network_module.get_server_loop = asyncio.get_event_loop
+    sys.modules[f"{package_name}.utils.network"] = network_module
+
+    fake_prompt_server = _FakePromptServer()
+
+    server_module = types.ModuleType("server")
+    server_module.PromptServer = types.SimpleNamespace(instance=fake_prompt_server)
+    sys.modules["server"] = server_module
+
+    execution_module = types.ModuleType("execution")
+
+    async def _validate_prompt(_prompt_id, _prompt, _partial_targets):
+        return (True, None, ["1"], {})
+
+    execution_module.validate_prompt = _validate_prompt
+    execution_module.SENSITIVE_EXTRA_DATA_KEYS = ()
+    sys.modules["execution"] = execution_module
+
+    return fake_prompt_server
+
+
+def _load_async_helpers_module():
+    package_name = "dist_async_helpers_testpkg"
+    fake_prompt_server = _bootstrap_package(package_name)
+    module_path = Path(__file__).resolve().parents[1] / "utils/async_helpers.py"
+    spec = importlib.util.spec_from_file_location(
+        f"{package_name}.utils.async_helpers",
+        module_path,
+    )
+    module = importlib.util.module_from_spec(spec)
+    assert spec is not None and spec.loader is not None
+    sys.modules[spec.name] = module
+    spec.loader.exec_module(module)
+    return module, fake_prompt_server
+
+
+class AsyncHelpersQueuePromptPayloadTests(unittest.TestCase):
+    def test_queue_prompt_payload_includes_create_time_metadata(self):
+        async_helpers_module, fake_prompt_server = _load_async_helpers_module()
+
+        prompt_id = asyncio.run(
+            async_helpers_module.queue_prompt_payload(
+                {"1": {"class_type": "KSampler", "inputs": {}}},
+                workflow_meta={"id": "workflow-1"},
+                client_id="client-1",
+            )
+        )
+
+        self.assertIsInstance(prompt_id, str)
+        self.assertTrue(fake_prompt_server.prompt_queue.items)
+
+        queued_item = fake_prompt_server.prompt_queue.items[-1]
+        self.assertEqual(len(queued_item), 6)
+        self.assertEqual(queued_item[1], prompt_id)
+
+        extra_data = queued_item[3]
+        self.assertEqual(extra_data["client_id"], "client-1")
+        self.assertEqual(extra_data["extra_pnginfo"]["workflow"]["id"], "workflow-1")
+        self.assertIn("create_time", extra_data)
+        self.assertIsInstance(extra_data["create_time"], int)
+        self.assertGreater(extra_data["create_time"], 0)
+
+
+if __name__ == "__main__":
+    unittest.main()
diff --git a/utils/async_helpers.py b/utils/async_helpers.py
index d39abab..36718bd 100644
--- a/utils/async_helpers.py
+++ b/utils/async_helpers.py
@@ -3,6 +3,7 @@ Async helper utilities for ComfyUI-Distributed.
 """
 import asyncio
 import threading
+import time
 import uuid
 import execution
 import server
@@ -122,6 +123,8 @@ async def queue_prompt_payload(prompt_obj, workflow_meta=None, client_id=None):
         extra_data.setdefault("extra_pnginfo", {})["workflow"] = workflow_meta
     if client_id:
         extra_data["client_id"] = client_id
+    # Keep parity with ComfyUI /prompt endpoint so Jobs API metadata stays valid.
+    extra_data.setdefault("create_time", int(time.time() * 1000))
 
     sensitive = {}
     for key in getattr(execution, "SENSITIVE_EXTRA_DATA_KEYS", []):