diff --git a/gateway/authz_mixin.py b/gateway/authz_mixin.py
index 645ba385a3..eb57a7f334 100644
--- a/gateway/authz_mixin.py
+++ b/gateway/authz_mixin.py
@@ -218,31 +218,33 @@ class GatewayAuthorizationMixin:
         return getattr(self, "_profile_adapters", None) or {}
 
     def _authorization_adapter(self, platform: Optional[Platform], profile: Optional[str] = None):
-        """Live adapter whose intake policy gates authorization.
-
-        Secondary-profile adapters live in ``_profile_adapters[profile]``; the primary profile owns
-        ``self.adapters``. ``_profile_adapters`` is consulted BEFORE the active profile name: multiplex
-        turns override ``HERMES_HOME`` so ``_active_profile_name()`` reports the secondary profile
-        mid-turn, and treating it as primary would hand it the default bot.
+        """Live adapter whose intake policy gates authorization (``_adapters_for_profile`` for the
+        profile rule). ``None`` when the profile has no adapter for *platform*.
         """
         if not platform:
             return None
+        return self._adapters_for_profile(profile).get(platform)
+
+    def _adapters_for_profile(self, profile: Optional[str]) -> dict:
+        """The live adapter map *profile* may deliver through: ``_profile_adapters[p]`` for a
+        secondary, ``self.adapters`` only for the primary/default. ``_profile_adapters`` is consulted
+        BEFORE the active profile name: multiplex turns override ``HERMES_HOME`` so
+        ``_active_profile_name()`` reports the secondary profile mid-turn, and treating it as primary
+        would hand it the default bot. A named profile with no map gets ``{}`` — fail closed: a
+        secondary whose adapter failed to connect must NOT fall back to the default profile's adapter
+        (replies, tool sends, marker-file notices out the wrong bot)."""
         profile_name = (profile or "").strip() or None
-        if profile_name and profile_name != "default":
-            profile_adapters = self._profile_adapters_map()
-            if profile_name in profile_adapters:
-                return profile_adapters[profile_name].get(platform)
-            # Identity captured at construction, not the per-turn HERMES_HOME-derived name.
-            primary_profile = getattr(self, "_primary_profile_name", None)
-            if not primary_profile:
-                with contextlib.suppress(Exception):
-                    primary_profile = self._active_profile_name()
-            if profile_name == primary_profile:
-                return self._primary_adapters().get(platform)
-            # Fail closed: a secondary profile whose adapter failed to connect must NOT
-            # fall back to the default profile's adapter (replies out the wrong bot).
-            return None
-        return self._primary_adapters().get(platform)
+        if not profile_name or profile_name == "default":
+            return self._primary_adapters()
+        profile_adapters = self._profile_adapters_map()
+        if profile_name in profile_adapters:
+            return profile_adapters[profile_name]
+        # Identity captured at construction, not the per-turn HERMES_HOME-derived name.
+        primary_profile = getattr(self, "_primary_profile_name", None)
+        if not primary_profile:
+            with contextlib.suppress(Exception):
+                primary_profile = self._active_profile_name()
+        return self._primary_adapters() if profile_name == primary_profile else {}
 
     def _adapter_for_source(self, source: Optional[SessionSource]):
         """Resolve the live adapter for an inbound ``SessionSource``."""
diff --git a/gateway/run_goals.py b/gateway/run_goals.py
index ba7cc3eed4..7e4688b9aa 100644
--- a/gateway/run_goals.py
+++ b/gateway/run_goals.py
@@ -10,8 +10,8 @@ from __future__ import annotations
 import asyncio
 import logging
 import time
-from contextlib import suppress
-from typing import TYPE_CHECKING, Any
+from contextlib import nullcontext, suppress
+from typing import TYPE_CHECKING, Any, Optional
 
 from gateway.platforms.event import MessageEvent, MessageType
 
@@ -365,8 +365,11 @@ class GatewayGoalsMixin:
         if msg and source is not None:
             await self._defer_goal_status_notice_after_delivery(source, msg)
 
-    async def _loop_wakeup_fire_one(self, sid: str, state: Any, now: float, warned_no_route: set) -> None:
-        """Inject one due /loop wakeup into its session, applying every deferral rule."""
+    async def _loop_wakeup_fire_one(
+        self, sid: str, state: Any, now: float, warned_no_route: set, profile: Optional[str] = None,
+    ) -> None:
+        """Inject one due /loop wakeup into its session, applying every deferral rule. ``profile`` is
+        the store being scanned (None = default); a ``profile`` persisted in the route wins."""
         from hermes_cli.loops import LoopManager, goal_blocks_loop_tick
 
         if state.awaiting_response or now < state.next_due_at:
@@ -376,12 +379,17 @@ class GatewayGoalsMixin:
         chat_id = route.get("chat_id", "")
         if not platform_name or not chat_id:
             return  # CLI / TUI-owned loop — their own schedulers drive it.
-        adapter = next((a for p, a in self.adapters.items() if p.value == platform_name), None)
+        profile = route.get("profile") or profile
+        # The loop's OWN profile's adapter map, fail closed: ``self.adapters`` is the default profile's,
+        # so a secondary session's wakeup would inject via the default bot on a bare chat_id (a
+        # Telegram DM lands in the user's chat with the other bot).
+        adapters = self._adapters_for_profile(profile)
+        adapter = next((a for p, a in adapters.items() if p.value == platform_name), None)
         if adapter is None:
             if sid not in warned_no_route:
                 warned_no_route.add(sid)
                 logger.debug(
-                    "loop wakeup: no adapter for platform %r (session %s)", platform_name, sid,
+                    "loop wakeup: no adapter for platform %r (session %s, profile %s)", platform_name, sid, profile,
                 )
             return
 
@@ -393,6 +401,8 @@ class GatewayGoalsMixin:
         })
         if source is None:
             return
+        if profile and not getattr(source, "profile", None):
+            source.profile = profile  # session key + runtime scope of the injected turn
         session_key = None
         with suppress(Exception):
             session_key = self._session_key_for_source(source)
@@ -435,21 +445,37 @@ class GatewayGoalsMixin:
         """Fire due /loop wakeups for idle gateway sessions: a coarse ticker scans persisted loops
         (SessionDB ``loop:*`` rows) and injects each due prompt via the synthetic-message path.
         Deferrals: session running a turn (FIFO would race the live turn); active non-parked /goal
-        (goal owns the idle boundary); no routing metadata (one-time warning)."""
+        (goal owns the idle boundary); no routing metadata (one-time warning).
+
+        Multiplex: one gateway-wide task, so ``list_active_loops`` alone reads only the launch home's
+        store — a ``/loop`` set from a secondary profile's chat would never fire. Every served
+        profile's store is scanned under its own runtime scope (same shape as ``_handoff_watcher``),
+        and each hit is fired against that profile's adapters."""
+        from gateway.run import _async_profile_runtime_scope, _handoff_watch_scopes
         await asyncio.sleep(5)  # let platforms finish connecting
         warned_no_route: set = set()
+
+        def _scope(profile_home):
+            return (_async_profile_runtime_scope(profile_home) if profile_home is not None
+                    else nullcontext())
+
+        async def _scan_one_store(profile_name: Optional[str]) -> None:
+            from hermes_cli.loops import list_active_loops
+
+            # Warm once per scan: the scan reads every persisted loop and a cold cache would
+            # run the state.db init on the loop thread before the first read.
+            await self._warm_goals_session_db("loop wakeup")
+            # Off-loop too: the read is lock-free under WAL but convoys on the writer lock without it.
+            active_loops = await self._run_in_executor_with_context(list_active_loops)
+            now = time.time()
+            for sid, state in active_loops:
+                await self._loop_wakeup_fire_one(sid, state, now, warned_no_route, profile_name)
+
         while self._running:
             try:
-                from hermes_cli.loops import list_active_loops
-
-                # Warm once per scan: the scan reads every persisted loop and a cold cache would
-                # run the state.db init on the loop thread before the first read.
-                await self._warm_goals_session_db("loop wakeup")
-                # Off-loop too: the read is lock-free under WAL but convoys on the writer lock without it.
-                active_loops = await self._run_in_executor_with_context(list_active_loops)
-                now = time.time()
-                for sid, state in active_loops:
-                    await self._loop_wakeup_fire_one(sid, state, now, warned_no_route)
+                for profile_name, profile_home in _handoff_watch_scopes(self):
+                    async with _scope(profile_home):
+                        await _scan_one_store(profile_name)
             except Exception as exc:
                 logger.debug("loop wakeup watcher error: %s", exc)
             await asyncio.sleep(interval)
diff --git a/gateway/run_notifications.py b/gateway/run_notifications.py
index 41f8a55ee6..39bde5a82e 100644
--- a/gateway/run_notifications.py
+++ b/gateway/run_notifications.py
@@ -421,6 +421,19 @@ class GatewayNotificationsMixin:
             prompt=_hermes_home / ".update_prompt.json", response=_hermes_home / ".update_response",
         )
 
+    @staticmethod
+    def _marker_profile(data: dict) -> Optional[str]:
+        """Owning profile of a persisted restart/update marker: explicit ``profile``, else the
+        ``agent:<profile>:`` lane of its ``session_key`` (markers written before ``profile`` was
+        persisted); ``None`` = default profile."""
+        profile = str(data.get("profile") or "").strip()
+        if profile:
+            return profile
+        parts = str(data.get("session_key") or "").split(":")
+        if len(parts) >= 5 and parts[0] == "agent" and parts[1] not in ("main", ""):
+            return parts[1]
+        return None
+
     def _resolve_update_target(self, paths: "_UpdatePaths") -> Optional["_UpdateTarget"]:
         """Resolve adapter/chat/session for update watcher messages from the pending marker."""
         for path in (paths.claimed, paths.pending):
@@ -434,7 +447,9 @@ class GatewayNotificationsMixin:
                 if not (platform_str and chat_id):
                     continue  # BASE: an incomplete marker falls through to the next path, not "unresolved"
                 platform = Platform(platform_str)
-                adapter = self.adapters.get(platform)
+                # The requester's OWN profile bot (marker ``profile``, else the ``agent:<profile>:`` key
+                # lane); a bare self.adapters lookup is the default bot under multiplex.
+                adapter = self._authorization_adapter(platform, self._marker_profile(pending))
                 if not adapter:
                     return None
                 metadata = self._pending_marker_metadata(platform, chat_id, pending, adapter)
@@ -627,7 +642,7 @@ class GatewayNotificationsMixin:
             exit_code = self._update_exit_code(paths)
             output = paths.output.read_bytes().decode("utf-8", errors="replace") if paths.output.exists() else ""
             platform = Platform(platform_str)
-            adapter = self.adapters.get(platform)
+            adapter = self._authorization_adapter(platform, self._marker_profile(pending))
             if chat_id and not adapter:
                 # Target platform not reconnected yet (common right after the update's restart): keep the
                 # markers for a later retry instead of silently losing the notification.
@@ -671,7 +686,10 @@ class GatewayNotificationsMixin:
             if not platform_str or not chat_id:
                 return None
             platform = Platform(platform_str)
-            transport = resolve_delivery_transport(platform, self.config, self.adapters)
+            # Relay-aware transport over the REQUESTER'S profile adapter map; ``self.adapters`` is the
+            # default profile's, so a secondary's "restarted" notice would leave through the wrong bot.
+            transport = resolve_delivery_transport(
+                platform, self.config, self._adapters_for_profile(self._marker_profile(data)))
             if transport is None:
                 logger.debug("Restart notification skipped: no live transport for %s", platform_str)
                 return None
diff --git a/gateway/run_shutdown.py b/gateway/run_shutdown.py
index 812aa3d853..53933399b9 100644
--- a/gateway/run_shutdown.py
+++ b/gateway/run_shutdown.py
@@ -877,7 +877,9 @@ class GatewayShutdownMixin:
         return len(notified)
 
     async def _shutdown_notification_target(self, session_key: str):
-        """``(source, platform_str, chat_id, thread_id)``: persisted origin > cached source > parsed key."""
+        """``(source, platform_str, chat_id, thread_id, profile)``: persisted origin > cached source >
+        parsed key. ``profile`` is the owning profile from the source or the ``agent:<profile>:`` key
+        namespace (``None`` = default) so the notice leaves through that profile's bot."""
         from gateway.run import _parse_session_key
         source = None
         try:
@@ -890,11 +892,15 @@ class GatewayShutdownMixin:
         if source is None:
             source = self._get_cached_session_source(session_key)
         if source is not None:
-            return source, source.platform.value, str(source.chat_id), source.thread_id
-        _parsed = _parse_session_key(session_key)
+            return source, source.platform.value, str(source.chat_id), source.thread_id, getattr(source, "profile", None)
+        parts = session_key.split(":")
+        profile = parts[1] if len(parts) >= 5 and parts[0] == "agent" and parts[1] != "main" else None
+        # _parse_session_key only understands the ``agent:main:`` lane; a secondary's key is parsed on
+        # the same shape with its profile carried separately.
+        _parsed = _parse_session_key(":".join(["agent", "main", *parts[2:]]) if profile else session_key)
         if not _parsed:
             return None
-        return None, _parsed["platform"], _parsed["chat_id"], _parsed.get("thread_id")
+        return None, _parsed["platform"], _parsed["chat_id"], _parsed.get("thread_id"), profile
 
     async def _send_shutdown_notice(
         self, adapter, chat_id: str, msg: str, kind: str, platform_str: str, **send_kwargs
@@ -946,13 +952,18 @@ class GatewayShutdownMixin:
             target = await self._shutdown_notification_target(session_key)
             if target is None:
                 continue
-            source, platform_str, chat_id, thread_id = target
+            source, platform_str, chat_id, thread_id, profile = target
             dedup_key = _notice_target_key(platform_str, chat_id, thread_id)
             if dedup_key in notified:
                 continue
             try:
                 platform = Platform(platform_str)
-                adapter = self.adapters.get(platform)
+                # The session's OWN profile's bot (transport ref → profile map), never a bare
+                # self.adapters hit: under multiplex that is the default bot, so a secondary session's
+                # "Gateway shutting down" would land in the user's chat with the wrong bot.
+                adapter = self._adapter_for_source(source) if source is not None else None
+                if adapter is None:
+                    adapter = self._authorization_adapter(platform, profile)
                 if not adapter:
                     continue
                 if not self._notice_allowed(platform, "active session"):
diff --git a/gateway/slash_commands.py b/gateway/slash_commands.py
index 27d688203c..4a778d3172 100644
--- a/gateway/slash_commands.py
+++ b/gateway/slash_commands.py
@@ -103,14 +103,17 @@ def _execute(command: str, **ctx_kwargs):
 
 
 def _restart_notify_payload(event: MessageEvent) -> dict:
-    """Requester routing info so the new gateway process can notify them once back online."""
+    """Requester routing info so the new gateway process can notify them once back online.
+    ``profile`` is persisted so the notice leaves through the requester's own profile bot after the
+    restart (a bare platform lookup would resolve the default profile's adapter)."""
     source = event.source
     data = {"platform": source.platform.value if source.platform else None,
             "chat_id": source.chat_id, "chat_type": source.chat_type}
     if source.delivered_via_upstream_relay is True:
         data["delivered_via_upstream_relay"] = True
         data.update({k: getattr(source, k) for k in ("user_id", "scope_id") if getattr(source, k)})
-    optional = (("thread_id", source.thread_id), ("message_id", event.message_id))
+    optional = (("thread_id", source.thread_id), ("message_id", event.message_id),
+                ("profile", getattr(source, "profile", None)))
     data.update({k: v for k, v in optional if v})
     return data
 
@@ -208,10 +211,11 @@ class GatewaySlashCommandsMixin(
         return self._thread_metadata_for_source(event.source, self._reply_anchor_for_event(event))
 
     def _adapter_and_key_for(self, event: MessageEvent):
-        """``(adapter, session_key)`` for the event's source, either None when no source."""
+        """``(adapter, session_key)`` for the event's source, either None when no source. The source's
+        OWN transport (profile-aware, fail-closed) — ``self.adapters`` is the default profile's map."""
         if not event.source:
             return None, None
-        return self.adapters.get(event.source.platform), self._session_key_for_source(event.source)
+        return self._adapter_for_source(event.source), self._session_key_for_source(event.source)
 
     def _telegramized_command_reply(self, event: MessageEvent, text: str) -> str:
         from gateway.run import _telegramize_command_mentions
@@ -255,7 +259,7 @@ class GatewaySlashCommandsMixin(
         (WeCom msgtype:"stream"), which need it sent directly with control-lane metadata (reliable
         proactive send, not the finalized reply stream). ``is not True``: mocks auto-create attrs."""
         source = event.source
-        adapter = self.adapters.get(source.platform)
+        adapter = self._adapter_for_source(source)  # the receiving bot, not the default profile's
         if adapter:
             adapter.resume_typing_for_chat(source.chat_id)  # agent is about to continue
         if getattr(adapter, "SUPPORTS_NATIVE_STREAMING", False) is not True:
@@ -1234,7 +1238,10 @@ class GatewaySlashCommandsMixin(
             "platform": src.platform.value, "chat_id": src.chat_id, "chat_type": src.chat_type,
             "user_id": src.user_id, "session_key": self._session_key_for_source(src),
             "timestamp": datetime.now().isoformat()}
-        pending.update({k: v for k, v in (("thread_id", src.thread_id), ("message_id", event.message_id)) if v})
+        # ``profile``: the update watcher (possibly the NEXT gateway process) must answer through the
+        # requester's own profile bot, not the default profile's adapter for the same platform.
+        pending.update({k: v for k, v in (("thread_id", src.thread_id), ("message_id", event.message_id),
+                                          ("profile", getattr(src, "profile", None))) if v})
         _tmp_pending = pending_path.with_suffix(".tmp")
         _tmp_pending.write_text(json.dumps(pending), encoding="utf-8")
         _tmp_pending.replace(pending_path)
diff --git a/gateway/slash_commands_goals.py b/gateway/slash_commands_goals.py
index 8b74e7a4cb..422beb0d4f 100644
--- a/gateway/slash_commands_goals.py
+++ b/gateway/slash_commands_goals.py
@@ -280,14 +280,15 @@ class GatewayGoalCommandsMixin:
         mgr = LoopManager(session_id=sid)
 
         # New loops capture the event's routing so the idle loop-wakeup watcher can inject ticks
-        # here after a restart; best-effort, empty fields dropped.
+        # here after a restart; best-effort, empty fields dropped. ``profile`` pins the wakeup to this
+        # session's own bot under multiplex (the watcher must never fire it through the default bot).
         route: dict = {}
         try:
             src = event.source
             if src is not None:
                 platform = getattr(src, "platform", "")
                 route = {"platform": platform.value if hasattr(platform, "value") else str(platform or "")}
-                for key in ("chat_id", "chat_type", "thread_id", "user_id", "user_name"):
+                for key in ("chat_id", "chat_type", "thread_id", "user_id", "user_name", "profile"):
                     route[key] = str(getattr(src, key, "") or "")
                 route = {k: v for k, v in route.items() if v}
         except Exception:
diff --git a/plugins/platforms/discord/adapter.py b/plugins/platforms/discord/adapter.py
index 32d754f8bd..4521301cd1 100644
--- a/plugins/platforms/discord/adapter.py
+++ b/plugins/platforms/discord/adapter.py
@@ -3916,20 +3916,45 @@ class DiscordAdapter(DiscordMediaMixin, BasePlatformAdapter):
             logger.debug("[Discord] Could not schedule admin notify task: %s", e)
         return False
 
+    @staticmethod
+    async def _alert_adapters_and_config(runner, profile):
+        """``(adapter_map, gateway_config)`` of the profile owning this adapter. Default/primary: the
+        runner's own. Secondary: ``_profile_adapters[profile]`` and the config loaded under that
+        profile's runtime scope (its ``home_channel`` entries live in ITS config.yaml)."""
+        if not profile:
+            return runner.adapters, runner.config
+        adapters = runner._adapters_for_profile(profile)
+        if adapters is runner.adapters:  # profile IS the primary
+            return adapters, runner.config
+        from gateway.config import load_gateway_config
+        from gateway.run import _async_profile_runtime_scope
+        from hermes_cli.profiles import get_profile_dir
+        async with _async_profile_runtime_scope(get_profile_dir(profile)):
+            return adapters, load_gateway_config()
+
     async def _notify_unauthorized_slash(
         self, user_name: str, user_id: str, chan_id, guild_id, command_text: str, reason: str,
     ) -> None:
         """Best-effort operator alert: TELEGRAM first, then SLACK; no-op without a home channel.
-        A soft failure (``SendResult(success=False)``, e.g. rate-limit) continues the fallback chain."""
+        A soft failure (``SendResult(success=False)``, e.g. rate-limit) continues the fallback chain.
+        Under multiplex the alert stays inside THIS adapter's profile: its own adapter map (fail closed
+        when the profile has no Telegram/Slack bot) and its own home channels — never the default
+        profile's bot or channel, which is what a bare ``runner.adapters`` lookup resolves."""
         runner = getattr(self, "gateway_runner", None)
         if not runner:
             return
+        profile = getattr(self, "_owner_profile", None)
+        try:
+            adapters, config = await self._alert_adapters_and_config(runner, profile)
+        except Exception as e:
+            logger.debug("[Discord] Admin notify: profile %r resolution failed: %s", profile, e)
+            return
         for target in (Platform.TELEGRAM, Platform.SLACK):
             try:
-                adapter = runner.adapters.get(target)
+                adapter = adapters.get(target)
                 if not adapter:
                     continue
-                home = runner.config.get_home_channel(target)
+                home = config.get_home_channel(target)
                 if not home or not getattr(home, "chat_id", None):
                     continue
                 msg = (
diff --git a/plugins/platforms/wecom/adapter.py b/plugins/platforms/wecom/adapter.py
index afe198b738..772d433e6b 100644
--- a/plugins/platforms/wecom/adapter.py
+++ b/plugins/platforms/wecom/adapter.py
@@ -754,11 +754,12 @@ async def _send_via(adapter, chat_id, message, *, live: bool):
 
 async def _standalone_send(pconfig, chat_id, message, *, thread_id=None, media_files=None, force_document=False):
     """Reuse the live gateway adapter in-process, else connect ephemerally (WeCom allows ONE
-    WebSocket per bot — a second connection kicks the first)."""
+    WebSocket per bot — a second connection kicks the first). The live adapter is the ACTIVE
+    PROFILE's (``_live_adapter``): a bare ``runner.adapters`` hit is the default profile's bot under
+    multiplex, so a secondary profile's send would leave with the wrong identity."""
     try:
-        from gateway.run import _gateway_runner_ref
-        runner = _gateway_runner_ref()
-        adapter = runner.adapters.get(Platform.WECOM) if runner is not None else None
+        from tools.send_message_senders import _live_adapter
+        _, adapter = _live_adapter(Platform.WECOM)
     except Exception:
         adapter = None
     if adapter is not None:
diff --git a/tests/gateway/test_multiplex_notice_egress_profile_adapter.py b/tests/gateway/test_multiplex_notice_egress_profile_adapter.py
new file mode 100644
index 0000000000..40a93f1efd
--- /dev/null
+++ b/tests/gateway/test_multiplex_notice_egress_profile_adapter.py
@@ -0,0 +1,104 @@
+"""Out-of-band gateway egress for a SECONDARY profile session leaves through that profile's bot.
+
+Shutdown/restart/update notices and ``/loop`` wakeups resolved their adapter by bare platform from
+``runner.adapters`` — the default profile's map — so a secondary session's notice landed in the
+user's chat with the wrong bot (and for ``/loop`` the wakeup ran the default profile's turn).  They
+must use the session's own profile adapter and fail closed when that profile has none.
+"""
+import json
+from types import SimpleNamespace
+
+import pytest
+
+from gateway.config import GatewayConfig, Platform, PlatformConfig
+from gateway.platforms.event import MessageEvent, MessageType
+from gateway.run import GatewayRunner
+from gateway.session import SessionSource
+from gateway.slash_commands import _restart_notify_payload
+
+
+class _Adapter:
+    def __init__(self):
+        self.sent, self.handled = [], []
+
+    async def send(self, chat_id, content=None, metadata=None, **kw):
+        self.sent.append(chat_id)
+        return SimpleNamespace(success=True, message_id="m", error=None)
+
+    async def handle_message(self, event):
+        self.handled.append(event.text)
+
+
+def _runner():
+    r = object.__new__(GatewayRunner)
+    r.config = GatewayConfig(platforms={Platform.TELEGRAM: PlatformConfig(enabled=True, token="t")})
+    r.adapters = {Platform.TELEGRAM: _Adapter()}
+    r._profile_adapters = {"sec": {Platform.TELEGRAM: _Adapter()}, "nobot": {}}
+    r._primary_profile_name = "default"
+    r.session_store = None
+    r._session_sources = None
+    r._running_agents = {}
+    r._restart_requested = False
+    r._restart_command_source = None
+    return r
+
+
+@pytest.mark.asyncio
+async def test_shutdown_notice_for_secondary_session_uses_its_own_bot():
+    r = _runner()
+    r._running_agents["agent:sec:telegram:dm:42"] = object()
+    r._running_agents["agent:nobot:telegram:dm:43"] = object()
+    r._snapshot_running_agents = lambda: list(r._running_agents)
+
+    await r._notify_active_sessions_of_shutdown()
+
+    assert r._profile_adapters["sec"][Platform.TELEGRAM].sent == ["42"]
+    # The default bot never speaks for a secondary session — not even one whose bot is down.
+    assert r.adapters[Platform.TELEGRAM].sent == []
+
+
+@pytest.mark.asyncio
+async def test_restart_marker_from_secondary_session_notifies_via_its_own_bot(tmp_path, monkeypatch):
+    import gateway.run as gateway_run
+    monkeypatch.setattr(gateway_run, "_hermes_home", tmp_path)
+    r = _runner()
+    src = SessionSource(platform=Platform.TELEGRAM, chat_id="42", chat_type="dm", user_id="42", profile="sec")
+    event = MessageEvent(text="/restart", message_type=MessageType.TEXT, source=src, message_id="7")
+    (tmp_path / ".restart_notify.json").write_text(json.dumps(_restart_notify_payload(event)))
+
+    assert await r._send_restart_notification() == ("telegram", "42", None)
+    assert r._profile_adapters["sec"][Platform.TELEGRAM].sent == ["42"]
+    assert r.adapters[Platform.TELEGRAM].sent == []
+
+
+@pytest.mark.asyncio
+async def test_loop_wakeup_from_secondary_route_fires_through_its_own_bot(monkeypatch):
+    from hermes_cli import loops
+
+    class _Mgr:
+        state = SimpleNamespace(ticks_fired=1)
+
+        def __init__(self, session_id=None):
+            pass
+
+        def is_due(self, now):
+            return True
+
+        def fire_tick(self):
+            return "tick"
+
+        def complete_tick(self, *_):
+            return {}
+
+    monkeypatch.setattr(loops, "LoopManager", _Mgr)
+    monkeypatch.setattr(loops, "goal_blocks_loop_tick", lambda sid: False)
+    r = _runner()
+    r._running = True
+    route = {"platform": "telegram", "chat_id": "42", "chat_type": "dm", "user_id": "42", "profile": "sec"}
+    state = SimpleNamespace(awaiting_response=False, next_due_at=0, route=route)
+
+    await r._loop_wakeup_fire_one("sid", state, 1e12, set())
+    await r._loop_wakeup_fire_one("sid2", SimpleNamespace(**{**vars(state), "route": {**route, "profile": "nobot"}}), 1e12, set())
+
+    assert r._profile_adapters["sec"][Platform.TELEGRAM].handled == ["tick"]
+    assert r.adapters[Platform.TELEGRAM].handled == []
diff --git a/tests/tools/test_send_message_multiplex_profile_adapter.py b/tests/tools/test_send_message_multiplex_profile_adapter.py
new file mode 100644
index 0000000000..6bbcb3909d
--- /dev/null
+++ b/tests/tools/test_send_message_multiplex_profile_adapter.py
@@ -0,0 +1,47 @@
+"""send_message must deliver through the ACTIVE PROFILE's gateway adapter under multiplex.
+
+``runner.adapters`` holds the default profile's bots; a secondary profile's turn that resolved the
+live adapter by bare platform posted (and reacted) with the default bot's identity.  The lookup must
+honour ``_profile_adapters[profile]`` and fail closed (``None`` → scoped standalone sender / error)
+when the profile has no adapter for that platform — never the default bot.
+"""
+from pathlib import Path
+
+import pytest
+
+from gateway.config import Platform
+from gateway.run import GatewayRunner, _profile_runtime_scope
+from tools.send_message_senders import _live_adapter
+
+
+@pytest.fixture
+def mux_runner(tmp_path, monkeypatch):
+    home = tmp_path / ".hermes"
+    (home / "profiles" / "sec").mkdir(parents=True)
+    (home / "profiles" / "nobot").mkdir(parents=True)
+    monkeypatch.setattr(Path, "home", lambda: tmp_path)
+    monkeypatch.setenv("HERMES_HOME", str(home))
+    default_slack, sec_slack = object(), object()
+    runner = object.__new__(GatewayRunner)
+    runner.adapters = {Platform.SLACK: default_slack}
+    runner._profile_adapters = {"sec": {Platform.SLACK: sec_slack}, "nobot": {}}
+    runner._primary_profile_name = "default"
+    import gateway.run as gateway_run
+    monkeypatch.setattr(gateway_run, "_gateway_runner_ref", lambda: runner)
+    return home, default_slack, sec_slack
+
+
+def test_secondary_profile_turn_resolves_its_own_adapter(mux_runner):
+    home, default_slack, sec_slack = mux_runner
+    with _profile_runtime_scope(home / "profiles" / "sec", {}):
+        _, adapter = _live_adapter(Platform.SLACK)
+    assert adapter is sec_slack
+    _, adapter = _live_adapter(Platform.SLACK)  # default scope still gets the default bot
+    assert adapter is default_slack
+
+
+def test_profile_without_adapter_fails_closed_never_default_bot(mux_runner):
+    home, default_slack, _ = mux_runner
+    with _profile_runtime_scope(home / "profiles" / "nobot", {}):
+        _, adapter = _live_adapter(Platform.SLACK)
+    assert adapter is None
diff --git a/tools/send_message_senders.py b/tools/send_message_senders.py
index 166eec23c0..1e1e353017 100644
--- a/tools/send_message_senders.py
+++ b/tools/send_message_senders.py
@@ -292,7 +292,13 @@ async def _send_telegram(token, chat_id, message, media_files=None, thread_id=No
 def _live_adapter(platform, *, lookup_failed_warning=None):
     """``(runner, adapter)`` for the in-process gateway; ``(None, None)`` standalone (cron);
     ``(runner, None)`` when the lookup fails — logged when a warning is given, never silently
-    swallowed (a silent fall-through could recreate a reconnect storm)."""
+    swallowed (a silent fall-through could recreate a reconnect storm).
+
+    Multiplex: the adapter is the ACTIVE PROFILE's (``_profile_adapters[profile]``), never a bare
+    ``runner.adapters`` hit — that map holds the default profile's bots, so a secondary profile's turn
+    would post/react with the default bot's identity. A profile with no adapter for the platform
+    yields ``None`` (fail closed → the caller's scoped standalone sender or an error), never the
+    default bot. Same resolver shape as ``hermes_cli/platform_actions.py::_resolve_adapter``."""
     try:
         from gateway.run import _gateway_runner_ref
         runner = _gateway_runner_ref()
@@ -301,7 +307,11 @@ def _live_adapter(platform, *, lookup_failed_warning=None):
     if runner is None:
         return None, None
     try:
-        return runner, runner.adapters.get(platform)
+        resolve = getattr(runner, "_authorization_adapter", None)
+        if not callable(resolve):  # bare runner stubs without the authz mixin
+            return runner, runner.adapters.get(platform)
+        from hermes_cli.profiles import get_active_profile_name
+        return runner, resolve(platform, get_active_profile_name())
     except Exception:
         if lookup_failed_warning:
             logger.warning(lookup_failed_warning, exc_info=True)
diff --git a/website/docs/user-guide/multi-profile-gateways.md b/website/docs/user-guide/multi-profile-gateways.md
index 79636a2173..4eb5adc975 100644
--- a/website/docs/user-guide/multi-profile-gateways.md
+++ b/website/docs/user-guide/multi-profile-gateways.md
@@ -240,6 +240,14 @@ secrets or chat history to a reply. Kanban,
 profile-scoped skills/memory/SOUL, and model routing all behave per-profile
 exactly as they do with separate gateways.
 
+Outbound identity is per profile too. A turn running for profile `P` that calls
+the `send_message` tool (send, react, media) posts through `P`'s own bot;
+so do the "Gateway shutting down/restarted" and `/update` notices for `P`'s
+sessions, `/loop` wakeups set from `P`'s chats, and the Discord
+unauthorized-slash operator alert of `P`'s Discord bot (to `P`'s home
+channel). If `P` has no connected bot for that platform the send fails with a
+clear error — it never falls back to the default profile's bot.
+
 ### Serving selected profiles
 
 By default, `gateway.multiplex_profiles: true` serves every valid named profile