fix(a2a-tool): prefer UiPath proxy url over cached agent card url

pyproject.toml

@@ -1,11 +1,11 @@
 [project]
 name = "uipath-langchain"
-version = "0.13.1"
+version = "0.13.2"
 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"
 dependencies = [
-    "uipath>=2.10.79, <2.12.0",
+    "uipath>=2.11.10, <2.12.0",
     "uipath-core>=0.5.20, <0.6.0",
     "uipath-platform>=0.1.71, <0.2.0",
     "uipath-runtime>=0.11.0, <0.12.0",

src/uipath_langchain/agent/tools/a2a/a2a_tool.py

@@ -156,10 +156,10 @@ def _build_description(card: AgentCard) -> str:
 
 
 def _resolve_a2a_url(config: AgentA2aResourceConfig) -> str:
-    """Resolve the A2A endpoint URL from the cached agent card."""
-    if config.cached_agent_card and "url" in config.cached_agent_card:
-        return config.cached_agent_card["url"]
-    raise ValueError(f"A2A resource '{config.name}' has no URL in cachedAgentCard")
+    """Resolve the A2A endpoint URL, using the UiPath-hosted proxy URL."""
+    if config.a2a_url:
+        return config.a2a_url
+    raise ValueError(f"A2A resource '{config.name}' has no URL")
 
 
 async def _send_a2a_message(
@@ -341,6 +341,9 @@ def create_a2a_tools_and_clients(
                 default_output_modes=["text/plain"],
             )
 
+        if resource.a2a_url:
+            agent_card.url = resource.a2a_url
+
         a2a_client = A2aClient(agent_card)
         tool = _create_a2a_tool(resource, a2a_client, agent_card)
         tools.append(tool)