fix: forward agenthub_config to upstream factory on new-clients path

Author: radu-mocanu

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "uipath-langchain"
-version = "0.10.18"
+version = "0.10.19"
 description = "Python SDK that enables developers to build and deploy LangGraph agents to the UiPath Cloud Platform"
 readme = { file = "README.md", content-type = "text/markdown" }
 requires-python = ">=3.11"
@@ -23,7 +23,7 @@ dependencies = [
     "langchain-mcp-adapters==0.2.1",
     "pillow>=12.1.1",
     "a2a-sdk>=0.2.0,<1.0.0",
-    "uipath-langchain-client[openai]>=1.10.0,<1.11.0",
+    "uipath-langchain-client[openai]>=1.10.1,<1.11.0",
 ]
 
 classifiers = [
@@ -40,21 +40,21 @@ maintainers = [
 
 [project.optional-dependencies]
 anthropic = [
-    "uipath-langchain-client[anthropic]>=1.10.0,<1.11.0",
+    "uipath-langchain-client[anthropic]>=1.10.1,<1.11.0",
 ]
 vertex = [
-    "uipath-langchain-client[google]>=1.10.0,<1.11.0",
-    "uipath-langchain-client[vertexai]>=1.10.0,<1.11.0",
+    "uipath-langchain-client[google]>=1.10.1,<1.11.0",
+    "uipath-langchain-client[vertexai]>=1.10.1,<1.11.0",
 ]
 bedrock = [
-    "uipath-langchain-client[bedrock]>=1.10.0,<1.11.0",
+    "uipath-langchain-client[bedrock]>=1.10.1,<1.11.0",
     "boto3-stubs>=1.41.4",
 ]
 fireworks = [
-    "uipath-langchain-client[fireworks]>=1.10.0,<1.11.0",
+    "uipath-langchain-client[fireworks]>=1.10.1,<1.11.0",
 ]
 all = [
-    "uipath-langchain-client[all]>=1.10.0,<1.11.0",
+    "uipath-langchain-client[all]>=1.10.1,<1.11.0",
 ]
 
 [project.entry-points."uipath.middlewares"]

src/uipath_langchain/chat/chat_model_factory.py

@@ -44,7 +44,6 @@ def get_chat_model(
     timeout: float | None = DEFAULT_TIMEOUT_SECONDS,
     max_retries: int | None = DEFAULT_MAX_RETRIES,
     callbacks: Callbacks = _UNSET,
-    # Legacy-only arguments
     agenthub_config: str | None = None,
     use_new_llm_clients: bool = True,
     **kwargs: Any,
@@ -73,8 +72,10 @@ def get_chat_model(
             returned chat model. Accepts ``list[BaseCallbackHandler]`` or a
             ``BaseCallbackManager``. Forwarded only when explicitly set.
             Ignored by the legacy factory.
-        agenthub_config: AgentHub config header value. Required by the legacy
-            factory; ignored by the new factory.
+        agenthub_config: AgentHub config header value. Forwarded to the new
+            factory, which applies it on top of ``client_settings.agenthub_config``
+            via ``model_copy`` (caller's settings instance is not mutated).
+            Required by the legacy factory.
         use_new_llm_clients: Routes to the new ``uipath_langchain_client``
             factory when True (default). When False, routes to the legacy
             in-repo clients.
@@ -115,6 +116,7 @@ def get_chat_model(
         vendor_type=vendor_type,
         api_flavor=api_flavor,
         custom_class=custom_class,
+        agenthub_config=agenthub_config,
         **optional_kwargs,
         **kwargs,
     )

tests/chat/test_chat_model_factory_agenthub.py

@@ -0,0 +1,49 @@
+"""Tests that ``chat_model_factory.get_chat_model`` forwards ``agenthub_config``
+to the upstream ``uipath_langchain_client`` factory on the new-clients path.
+
+Without this, low-code agent runtimes computed the right value
+(``agentsplayground`` for debug, ``agentsruntime`` for run, …) but every LLM
+gateway request shipped the upstream default ``agentsruntime`` because the
+parameter was silently dropped before delegating.
+"""
+
+from unittest.mock import MagicMock
+
+import pytest
+
+from uipath_langchain.chat.chat_model_factory import get_chat_model
+
+
+class TestForwardAgentHubConfig:
+    def test_agenthub_config_forwarded_on_new_path(self, mocker):
+        """The kwarg the caller passes must reach the upstream factory verbatim."""
+        upstream = mocker.patch(
+            "uipath_langchain.chat.chat_model_factory.get_chat_model_factory",
+            return_value=MagicMock(),
+        )
+
+        get_chat_model(
+            "gpt-4o",
+            agenthub_config="agentsplayground",
+            use_new_llm_clients=True,
+        )
+
+        _, kwargs = upstream.call_args
+        assert kwargs.get("agenthub_config") == "agentsplayground"
+
+    def test_agenthub_config_none_forwarded_on_new_path(self, mocker):
+        """Pass-through preserves None so upstream applies its own default."""
+        upstream = mocker.patch(
+            "uipath_langchain.chat.chat_model_factory.get_chat_model_factory",
+            return_value=MagicMock(),
+        )
+
+        get_chat_model("gpt-4o", use_new_llm_clients=True)
+
+        _, kwargs = upstream.call_args
+        assert kwargs.get("agenthub_config") is None
+
+    def test_legacy_path_still_requires_agenthub_config(self, mocker):
+        """Legacy factory contract is unchanged: missing agenthub_config raises."""
+        with pytest.raises(ValueError, match="agenthub_config is required"):
+            get_chat_model("gpt-4o", use_new_llm_clients=False)