Gate tool-gateway behind an env var, so it's not in users' faces until we're ready. Even if users enable it, it'll be blocked server-side for now, until we unlock for non-admin users on tool-gateway.

tests/agent/test_prompt_builder.py

@@ -401,6 +401,7 @@ class TestBuildSkillsSystemPrompt:
 
 class TestBuildNousSubscriptionPrompt:
     def test_includes_active_subscription_features(self, monkeypatch):
+        monkeypatch.setenv("HERMES_ENABLE_NOUS_MANAGED_TOOLS", "1")
         monkeypatch.setattr(
             "hermes_cli.nous_subscription.get_nous_subscription_features",
             lambda config=None: NousSubscriptionFeatures(
@@ -424,6 +425,7 @@ class TestBuildNousSubscriptionPrompt:
         assert "do not ask the user for Firecrawl, FAL, OpenAI TTS, or Browserbase API keys" in prompt
 
     def test_non_subscriber_prompt_includes_relevant_upgrade_guidance(self, monkeypatch):
+        monkeypatch.setenv("HERMES_ENABLE_NOUS_MANAGED_TOOLS", "1")
         monkeypatch.setattr(
             "hermes_cli.nous_subscription.get_nous_subscription_features",
             lambda config=None: NousSubscriptionFeatures(
@@ -445,6 +447,13 @@ class TestBuildNousSubscriptionPrompt:
         assert "suggest Nous subscription as one option" in prompt
         assert "Do not mention subscription unless" in prompt
 
+    def test_feature_flag_off_returns_empty_prompt(self, monkeypatch):
+        monkeypatch.delenv("HERMES_ENABLE_NOUS_MANAGED_TOOLS", raising=False)
+
+        prompt = build_nous_subscription_prompt({"web_search"})
+
+        assert prompt == ""
+
 
 # =========================================================================
 # Context files prompt builder