Support browser CDP URL from config

tests/conftest.py

@@ -184,6 +184,8 @@ _HERMES_BEHAVIORAL_VARS = frozenset({
     "HERMES_BACKGROUND_NOTIFICATIONS",
     "HERMES_EXEC_ASK",
     "HERMES_HOME_MODE",
+    "BROWSER_CDP_URL",
+    "CAMOFOX_URL",
 })
 
 

tests/tools/test_browser_cdp_override.py

@@ -77,3 +77,42 @@ class TestResolveCdpOverride:
             "https://cdp.browser-use.example/session/json/version",
             timeout=10,
         )
+
+
+class TestGetCdpOverride:
+    def test_prefers_env_var_over_config(self, monkeypatch):
+        import tools.browser_tool as browser_tool
+
+        monkeypatch.setenv("BROWSER_CDP_URL", HTTP_URL)
+        monkeypatch.setattr(
+            browser_tool,
+            "read_raw_config",
+            lambda: {"browser": {"cdp_url": "http://config-host:9222"}},
+            raising=False,
+        )
+
+        response = Mock()
+        response.raise_for_status.return_value = None
+        response.json.return_value = {"webSocketDebuggerUrl": WS_URL}
+
+        with patch("tools.browser_tool.requests.get", return_value=response) as mock_get:
+            resolved = browser_tool._get_cdp_override()
+
+        assert resolved == WS_URL
+        mock_get.assert_called_once_with(VERSION_URL, timeout=10)
+
+    def test_uses_config_browser_cdp_url_when_env_missing(self, monkeypatch):
+        import tools.browser_tool as browser_tool
+
+        monkeypatch.delenv("BROWSER_CDP_URL", raising=False)
+
+        response = Mock()
+        response.raise_for_status.return_value = None
+        response.json.return_value = {"webSocketDebuggerUrl": WS_URL}
+
+        with patch("hermes_cli.config.read_raw_config", return_value={"browser": {"cdp_url": HTTP_URL}}), \
+             patch("tools.browser_tool.requests.get", return_value=response) as mock_get:
+            resolved = browser_tool._get_cdp_override()
+
+        assert resolved == WS_URL
+        mock_get.assert_called_once_with(VERSION_URL, timeout=10)