diff --git a/hermes_cli/tools_config.py b/hermes_cli/tools_config.py
index f91abb33f8a4..e7bc392debd6 100644
--- a/hermes_cli/tools_config.py
+++ b/hermes_cli/tools_config.py
@@ -153,6 +153,7 @@ def _xai_credentials_present() -> bool:
 _TOOLSET_PLATFORM_RESTRICTIONS: Dict[str, Set[str]] = {
     "discord": {"discord"},
     "discord_admin": {"discord"},
+    "google_chat": {"google_chat"},
 }
 
 
@@ -1800,6 +1801,8 @@ def _get_platform_tools(
         known_map = config.get("known_plugin_toolsets", {})
         known_for_platform = set(known_map.get(platform, []))
         for pts in plugin_ts_keys:
+            if not _toolset_allowed_for_platform(pts, platform):
+                continue
             if pts in toolset_names:
                 # Explicitly listed in config — enabled
                 enabled_toolsets.add(pts)
diff --git a/tests/hermes_cli/test_tools_config.py b/tests/hermes_cli/test_tools_config.py
index dbe95a0cb5d5..55ac822b2c26 100644
--- a/tests/hermes_cli/test_tools_config.py
+++ b/tests/hermes_cli/test_tools_config.py
@@ -1316,6 +1316,15 @@ def test_discord_toolsets_not_available_on_other_platforms():
     assert _toolset_allowed_for_platform("discord_admin", "discord")
 
 
+def test_google_chat_toolset_not_available_on_other_platforms():
+    from hermes_cli.tools_config import _toolset_allowed_for_platform
+
+    for plat in ["cli", "telegram", "discord", "slack", "whatsapp", "signal"]:
+        assert not _toolset_allowed_for_platform("google_chat", plat), (
+            f"`google_chat` toolset leaked onto {plat}"
+        )
+    assert _toolset_allowed_for_platform("google_chat", "google_chat")
+
 def test_discord_toolsets_user_enabled_are_honored():
     """When the user opts in via `hermes tools`, the toolset appears."""
     config = {"platform_toolsets": {"discord": ["web", "terminal", "discord"]}}
@@ -1337,6 +1346,13 @@ def test_save_platform_tools_strips_restricted_toolsets():
     assert "terminal" in saved
 
 
+def test_save_platform_tools_strips_google_chat_toolset_from_non_google_chat():
+    config = {}
+    _save_platform_tools(config, "telegram", {"web", "google_chat"})
+    saved = config["platform_toolsets"]["telegram"]
+    assert "google_chat" not in saved
+    assert "web" in saved
+
 def test_get_platform_tools_feishu_includes_doc_and_drive():
     enabled = _get_platform_tools({}, "feishu")
     assert "feishu_doc" in enabled