diff --git a/plugins/hermes-agent/plugin/inline/adapter.py b/plugins/hermes-agent/plugin/inline/adapter.py
index 37b3fc3c7..ac04caa08 100644
--- a/plugins/hermes-agent/plugin/inline/adapter.py
+++ b/plugins/hermes-agent/plugin/inline/adapter.py
@@ -2402,7 +2402,10 @@ async def _dispatch_message(self, event: Dict[str, Any], *, edit: bool = False)
         )
         if has_command_target and not command_addressed_to_me:
             return
-        if not agent_action and await self._handle_thread_command(
+        # Adapter-local commands and thread creation run before core's authz, so they
+        # need the same default-deny sender check the button actions use.
+        actor_authorized = self._actor_authorized(chat_type, from_id)
+        if not agent_action and actor_authorized and await self._handle_thread_command(
             chat_id=chat_id,
             msg_id=msg_id,
             text=text,
@@ -2411,7 +2414,7 @@ async def _dispatch_message(self, event: Dict[str, Any], *, edit: bool = False)
             parent_chat_id=parent_chat_id,
         ):
             return
-        if not agent_action and await self._handle_follow_command(
+        if not agent_action and actor_authorized and await self._handle_follow_command(
             chat_id=chat_id,
             msg_id=msg_id,
             from_id=from_id,
@@ -2420,7 +2423,7 @@ async def _dispatch_message(self, event: Dict[str, Any], *, edit: bool = False)
             thread_id=thread_id,
         ):
             return
-        if not agent_action and await self._handle_inline_maintenance_command(
+        if not agent_action and actor_authorized and await self._handle_inline_maintenance_command(
             chat_id=chat_id,
             msg_id=msg_id,
             text=text,
@@ -2474,6 +2477,7 @@ async def _dispatch_message(self, event: Dict[str, Any], *, edit: bool = False)
         if (
             not edit
             and not agent_action
+            and actor_authorized
             and not thread_id
             and self._should_create_reply_thread_for_message(
                 chat_id=chat_id,
@@ -4018,14 +4022,6 @@ async def _thread_action_allowed(self, event: Dict[str, Any], state: Dict[str, A
         chat_type = await self._action_chat_type(event)
         if self._actor_authorized(chat_type, actor_id):
             return True
-        display_chat_id = self._chat_key(state.get("display_chat_id"))
-        target_chat_id = self._chat_key(state.get("target_chat_id"))
-        if chat_type and actor_id and self._allowed(chat_type, actor_id):
-            if chat_type == "dm":
-                return True
-            thread_id = display_chat_id if target_chat_id and display_chat_id != target_chat_id else None
-            if self._chat_allowed(display_chat_id or str(event.get("chatId") or ""), thread_id, target_chat_id):
-                return True
         await self._answer_action(interaction_id, "Not authorized")
         logger.info("[inline] blocked thread action actor=%s chat_type=%s action=%s", actor_id or "unknown", chat_type or "unknown", event.get("actionId") or "")
         return False
diff --git a/plugins/hermes-agent/tests/adapter-python.test.ts b/plugins/hermes-agent/tests/adapter-python.test.ts
index 760720d91..916337726 100644
--- a/plugins/hermes-agent/tests/adapter-python.test.ts
+++ b/plugins/hermes-agent/tests/adapter-python.test.ts
@@ -2054,6 +2054,7 @@ asyncio.run(assert_activated_agent_avoids_lookup())
 async def assert_forced_reply_thread_creation():
     adapter = InlineAdapter(PlatformConfig(extra={
         **base_extra,
+        "allow_from": "u1",
         "reply_threads": "on",
         "require_mention": False,
         "channel_prompts": {"99": "Thread prompt", "10": "Parent prompt"},
@@ -2154,7 +2155,7 @@ async def assert_forced_reply_thread_creation():
 asyncio.run(assert_forced_reply_thread_creation())
 
 async def assert_default_dm_reply_thread_creation():
-    adapter = InlineAdapter(PlatformConfig(extra=base_extra))
+    adapter = InlineAdapter(PlatformConfig(extra={**base_extra, "allow_from": "u1"}))
     events = []
     calls = []
 
@@ -2546,6 +2547,7 @@ asyncio.run(assert_observed_context_buffer())
 async def assert_explicit_addressing_precedence():
     adapter = InlineAdapter(PlatformConfig(extra={
         **base_extra,
+        "allow_from": "u1",
         "require_mention": True,
         "reply_threads": False,
         "context_backfill": "off",
@@ -2690,6 +2692,7 @@ async def assert_reply_thread_slash_command():
         settings_path = Path(tmp) / "settings.json"
         adapter = InlineAdapter(PlatformConfig(extra={
             **base_extra,
+            "allow_from": "u1,1600",
             "settings_path": str(settings_path),
             "require_mention": True,
         }))
@@ -2946,6 +2949,56 @@ async def assert_reply_thread_slash_command():
 
 asyncio.run(assert_reply_thread_slash_command())
 
+async def assert_local_commands_require_authorized_sender():
+    """Under the default open policy an unlisted sender must not reach adapter-local
+    handlers before core authz: /threads falls through to Hermes, th: buttons are denied."""
+    with tempfile.TemporaryDirectory() as tmp:
+        settings_path = Path(tmp) / "settings.json"
+        adapter = InlineAdapter(PlatformConfig(extra={**base_extra, "settings_path": str(settings_path)}))
+        events = []
+        answers = []
+        sidecar_calls = []
+
+        async def fake_handle_message(event):
+            events.append(event)
+
+        async def fake_answer_action(interaction_id, toast):
+            answers.append((interaction_id, toast))
+
+        async def fake_sidecar_call(path, body):
+            sidecar_calls.append((path, body))
+            return {"ok": True, "result": {}}
+
+        async def fake_fetch_message(chat_id, message_id):
+            return {"peerId": {"type": {"oneofKind": "user", "user": {"userId": chat_id}}}}
+
+        adapter.handle_message = fake_handle_message
+        adapter._answer_action = fake_answer_action
+        adapter._sidecar_call = fake_sidecar_call
+        adapter._fetch_message = fake_fetch_message
+
+        for text in ("/threads off", "/follow", "/inline-sync"):
+            await adapter._dispatch_message({
+                "seq": len(events) + 300,
+                "chatId": "20",
+                "message": {"id": f"stranger-{len(events)}", "chatId": "20", "fromId": "stranger", "message": text, "peerId": {"peer": {"oneofKind": "user"}}},
+            })
+        assert [e.text for e in events] == ["/threads off", "/follow", "/inline-sync"]
+        assert adapter._reply_thread_mode_for_chat("20") == "auto"
+        assert not settings_path.exists()
+        assert sidecar_calls == []
+
+        assert not await adapter._thread_action_allowed({
+            "chatId": "20",
+            "messageId": "m1",
+            "interactionId": "stranger-thread-action",
+            "actorUserId": "stranger",
+            "actionId": "th:x:on",
+        }, {"display_chat_id": "20", "target_chat_id": "20"})
+        assert answers[-1] == ("stranger-thread-action", "Not authorized")
+
+asyncio.run(assert_local_commands_require_authorized_sender())
+
 async def assert_new_message_delivery_dedup():
     def event(seq, date, text):
         return {