fix: pass routed base urls to provider clients

tests/test_llm_routing.py

@@ -3,6 +3,8 @@ import json
 
 import tradingagents.dataflows.config as dataflow_config
 import tradingagents.default_config as default_config
+from tradingagents.llm_clients.anthropic_client import AnthropicClient
+from tradingagents.llm_clients.google_client import GoogleClient
 from tradingagents.graph.trading_graph import TradingAgentsGraph
 
 
@@ -256,6 +258,48 @@ def test_provider_normalization_avoids_duplicate_legacy_client_creation(monkeypa
     assert created_clients.count(("openai", "gpt-5-mini")) == 1
 
 
+def test_anthropic_client_passes_base_url_to_langchain(monkeypatch):
+    captured_kwargs = {}
+
+    class FakeChatAnthropic:
+        def __init__(self, **kwargs):
+            captured_kwargs.update(kwargs)
+
+    monkeypatch.setattr(
+        "tradingagents.llm_clients.anthropic_client.NormalizedChatAnthropic",
+        FakeChatAnthropic,
+    )
+
+    client = AnthropicClient(
+        model="claude-sonnet-4-6",
+        base_url="https://anthropic.example/v1",
+    )
+    client.get_llm()
+
+    assert captured_kwargs["anthropic_api_url"] == "https://anthropic.example/v1"
+
+
+def test_google_client_passes_base_url_to_langchain(monkeypatch):
+    captured_kwargs = {}
+
+    class FakeChatGoogleGenerativeAI:
+        def __init__(self, **kwargs):
+            captured_kwargs.update(kwargs)
+
+    monkeypatch.setattr(
+        "tradingagents.llm_clients.google_client.NormalizedChatGoogleGenerativeAI",
+        FakeChatGoogleGenerativeAI,
+    )
+
+    client = GoogleClient(
+        model="gemini-2.5-pro",
+        base_url="https://google.example/v1beta",
+    )
+    client.get_llm()
+
+    assert captured_kwargs["base_url"] == "https://google.example/v1beta"
+
+
 def test_dataflow_config_returns_isolated_nested_routing(monkeypatch):
     monkeypatch.setattr(dataflow_config, "_config", None)
     dataflow_config.initialize_config()

tradingagents/llm_clients/anthropic_client.py

@@ -32,6 +32,8 @@ class AnthropicClient(BaseLLMClient):
     def get_llm(self) -> Any:
         """Return configured ChatAnthropic instance."""
         llm_kwargs = {"model": self.model}
+        if self.base_url:
+            llm_kwargs["anthropic_api_url"] = self.base_url
 
         for key in _PASSTHROUGH_KWARGS:
             if key in self.kwargs:

tradingagents/llm_clients/google_client.py

@@ -26,6 +26,8 @@ class GoogleClient(BaseLLMClient):
     def get_llm(self) -> Any:
         """Return configured ChatGoogleGenerativeAI instance."""
         llm_kwargs = {"model": self.model}
+        if self.base_url:
+            llm_kwargs["base_url"] = self.base_url
 
         for key in ("timeout", "max_retries", "google_api_key", "callbacks", "http_client", "http_async_client"):
             if key in self.kwargs: