fix: health check at //health when using default value to path arg

integrations/langgraph/python/ag_ui_langgraph/__init__.py

@@ -12,9 +12,9 @@
     LangGraphPlatformResultMessage,
     LangGraphPlatformActionExecutionMessage,
     LangGraphPlatformMessage,
-    PredictStateTool
+    PredictStateTool,
 )
-from .endpoint import add_langgraph_fastapi_endpoint
+from .endpoint import add_langgraph_fastapi_endpoints
 
 __all__ = [
     "LangGraphAgent",
@@ -31,5 +31,5 @@
     "LangGraphPlatformActionExecutionMessage",
     "LangGraphPlatformMessage",
     "PredictStateTool",
-    "add_langgraph_fastapi_endpoint"
+    "add_langgraph_fastapi_endpoints",
 ]

integrations/langgraph/python/ag_ui_langgraph/endpoint.py

@@ -1,15 +1,20 @@
-from fastapi import FastAPI, HTTPException, Request
+from fastapi import FastAPI, Request, APIRouter
 from fastapi.responses import StreamingResponse
 
 from ag_ui.core.types import RunAgentInput
 from ag_ui.encoder import EventEncoder
 
 from .agent import LangGraphAgent
 
-def add_langgraph_fastapi_endpoint(app: FastAPI, agent: LangGraphAgent, path: str = "/"):
-    """Adds an endpoint to the FastAPI app."""
 
-    @app.post(path)
+def add_langgraph_fastapi_endpoints(
+    app: FastAPI, agent: LangGraphAgent, path: str = "/"
+):
+    """Adds endpoints to the FastAPI app."""
+
+    router = APIRouter(prefix=path.rstrip("/"))
+
+    @router.post("/")
     async def langgraph_agent_endpoint(input_data: RunAgentInput, request: Request):
         # Get the accept header from the request
         accept_header = request.headers.get("accept")
@@ -22,16 +27,17 @@ async def event_generator():
                 yield encoder.encode(event)
 
         return StreamingResponse(
-            event_generator(),
-            media_type=encoder.get_content_type()
+            event_generator(), media_type=encoder.get_content_type()
         )
 
-    @app.get(f"{path}/health")
+    @router.get("/health")
     def health():
         """Health check."""
         return {
             "status": "ok",
             "agent": {
                 "name": agent.name,
-            }
-        }
+            },
+        }
+
+    app.include_router(router)