diff --git a/gateway/run.py b/gateway/run.py
index 7bfb8059e..99ed538c1 100644
--- a/gateway/run.py
+++ b/gateway/run.py
@@ -3502,10 +3502,12 @@ class GatewayRunner:
         os.environ["HERMES_SESSION_CHAT_ID"] = context.source.chat_id
         if context.source.chat_name:
             os.environ["HERMES_SESSION_CHAT_NAME"] = context.source.chat_name
+        if context.source.thread_id:
+            os.environ["HERMES_SESSION_THREAD_ID"] = str(context.source.thread_id)
     
     def _clear_session_env(self) -> None:
         """Clear session environment variables."""
-        for var in ["HERMES_SESSION_PLATFORM", "HERMES_SESSION_CHAT_ID", "HERMES_SESSION_CHAT_NAME"]:
+        for var in ["HERMES_SESSION_PLATFORM", "HERMES_SESSION_CHAT_ID", "HERMES_SESSION_CHAT_NAME", "HERMES_SESSION_THREAD_ID"]:
             if var in os.environ:
                 del os.environ[var]
     
diff --git a/tests/gateway/test_session_env.py b/tests/gateway/test_session_env.py
new file mode 100644
index 000000000..596df89ec
--- /dev/null
+++ b/tests/gateway/test_session_env.py
@@ -0,0 +1,45 @@
+import os
+
+from gateway.config import Platform
+from gateway.run import GatewayRunner
+from gateway.session import SessionContext, SessionSource
+
+
+def test_set_session_env_includes_thread_id(monkeypatch):
+    runner = object.__new__(GatewayRunner)
+    source = SessionSource(
+        platform=Platform.TELEGRAM,
+        chat_id="-1001",
+        chat_name="Group",
+        chat_type="group",
+        thread_id="17585",
+    )
+    context = SessionContext(source=source, connected_platforms=[], home_channels={})
+
+    monkeypatch.delenv("HERMES_SESSION_PLATFORM", raising=False)
+    monkeypatch.delenv("HERMES_SESSION_CHAT_ID", raising=False)
+    monkeypatch.delenv("HERMES_SESSION_CHAT_NAME", raising=False)
+    monkeypatch.delenv("HERMES_SESSION_THREAD_ID", raising=False)
+
+    runner._set_session_env(context)
+
+    assert os.getenv("HERMES_SESSION_PLATFORM") == "telegram"
+    assert os.getenv("HERMES_SESSION_CHAT_ID") == "-1001"
+    assert os.getenv("HERMES_SESSION_CHAT_NAME") == "Group"
+    assert os.getenv("HERMES_SESSION_THREAD_ID") == "17585"
+
+
+def test_clear_session_env_removes_thread_id(monkeypatch):
+    runner = object.__new__(GatewayRunner)
+
+    monkeypatch.setenv("HERMES_SESSION_PLATFORM", "telegram")
+    monkeypatch.setenv("HERMES_SESSION_CHAT_ID", "-1001")
+    monkeypatch.setenv("HERMES_SESSION_CHAT_NAME", "Group")
+    monkeypatch.setenv("HERMES_SESSION_THREAD_ID", "17585")
+
+    runner._clear_session_env()
+
+    assert os.getenv("HERMES_SESSION_PLATFORM") is None
+    assert os.getenv("HERMES_SESSION_CHAT_ID") is None
+    assert os.getenv("HERMES_SESSION_CHAT_NAME") is None
+    assert os.getenv("HERMES_SESSION_THREAD_ID") is None
diff --git a/tests/tools/test_cronjob_tools.py b/tests/tools/test_cronjob_tools.py
index 293622070..2a9197083 100644
--- a/tests/tools/test_cronjob_tools.py
+++ b/tests/tools/test_cronjob_tools.py
@@ -153,6 +153,36 @@ class TestScheduleCronjob:
         assert job["provider"] == "custom"
         assert job["base_url"] == "http://127.0.0.1:4000/v1"
 
+    def test_thread_id_captured_in_origin(self, monkeypatch):
+        monkeypatch.setenv("HERMES_SESSION_PLATFORM", "telegram")
+        monkeypatch.setenv("HERMES_SESSION_CHAT_ID", "123456")
+        monkeypatch.setenv("HERMES_SESSION_THREAD_ID", "42")
+        import cron.jobs as _jobs
+        created = json.loads(schedule_cronjob(
+            prompt="Thread test",
+            schedule="every 1h",
+            deliver="origin",
+        ))
+        assert created["success"] is True
+        job_id = created["job_id"]
+        job = _jobs.get_job(job_id)
+        assert job["origin"]["thread_id"] == "42"
+
+    def test_thread_id_absent_when_not_set(self, monkeypatch):
+        monkeypatch.setenv("HERMES_SESSION_PLATFORM", "telegram")
+        monkeypatch.setenv("HERMES_SESSION_CHAT_ID", "123456")
+        monkeypatch.delenv("HERMES_SESSION_THREAD_ID", raising=False)
+        import cron.jobs as _jobs
+        created = json.loads(schedule_cronjob(
+            prompt="No thread test",
+            schedule="every 1h",
+            deliver="origin",
+        ))
+        assert created["success"] is True
+        job_id = created["job_id"]
+        job = _jobs.get_job(job_id)
+        assert job["origin"].get("thread_id") is None
+
 
 # =========================================================================
 # list_cronjobs
diff --git a/tools/cronjob_tools.py b/tools/cronjob_tools.py
index 9ff7127bb..7a0daaf88 100644
--- a/tools/cronjob_tools.py
+++ b/tools/cronjob_tools.py
@@ -72,6 +72,7 @@ def _origin_from_env() -> Optional[Dict[str, str]]:
             "platform": origin_platform,
             "chat_id": origin_chat_id,
             "chat_name": os.getenv("HERMES_SESSION_CHAT_NAME"),
+            "thread_id": os.getenv("HERMES_SESSION_THREAD_ID"),
         }
     return None