chore: import upstream snapshot with attribution

python/examples/tool_router/langchain_agent.py

@@ -0,0 +1,48 @@
+import asyncio
+
+from langchain.agents import create_agent
+from langchain_mcp_adapters.client import MultiServerMCPClient
+from langchain_openai.chat_models import ChatOpenAI
+
+from composio import Composio
+
+composio = Composio()
+session = composio.create(
+    user_id="user_123",
+)
+
+
+async def main():
+    try:
+        mcp_client = MultiServerMCPClient(
+            {
+                "composio": {
+                    "transport": "streamable_http",
+                    "url": session.mcp.url,
+                    "headers": session.mcp.headers,
+                }
+            }
+        )
+
+        tools = await mcp_client.get_tools()
+
+        agent = create_agent(
+            tools=tools,
+            model=ChatOpenAI(model="gpt-4o"),
+        )
+
+        result = await agent.ainvoke(
+            {
+                "messages": [
+                    {"role": "user", "content": "Fetch my last email and summarize?"}
+                ]
+            }
+        )
+
+        print(result)
+    except Exception as e:
+        print(e)
+
+
+if __name__ == "__main__":
+    asyncio.run(main())