feat: add A2A tool for invoking remote agents at runtime (#761)

Author: PopescuTudor

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "uipath-langchain"
-version = "0.9.24"
+version = "0.9.25"
 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"
@@ -23,6 +23,7 @@ dependencies = [
     "mcp==1.26.0",
     "langchain-mcp-adapters==0.2.1",
     "pillow>=12.1.1",
+    "a2a-sdk>=0.2.0",
 ]
 
 classifiers = [

src/uipath_langchain/agent/tools/__init__.py

@@ -1,5 +1,6 @@
 """Tool creation and management for LowCode agents."""
 
+from .a2a import A2aClient, create_a2a_tools_and_clients, open_a2a_tools
 from .context_tool import create_context_tool
 from .escalation_tool import create_escalation_tool
 from .extraction_tool import create_ixp_extraction_tool
@@ -18,6 +19,9 @@
 )
 
 __all__ = [
+    "A2aClient",
+    "create_a2a_tools_and_clients",
+    "open_a2a_tools",
     "create_tools_from_resources",
     "create_tool_node",
     "create_context_tool",

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

@@ -0,0 +1,13 @@
+"""A2A (Agent-to-Agent) tools."""
+
+from .a2a_tool import (
+    A2aClient,
+    create_a2a_tools_and_clients,
+    open_a2a_tools,
+)
+
+__all__ = [
+    "A2aClient",
+    "create_a2a_tools_and_clients",
+    "open_a2a_tools",
+]