Update app.py

app.py

@@ -1,4 +1,4 @@
-from fastapi import FastAPI, Request, HTTPException
+from fastapi import FastAPI, Request, HTTPException, Response
 import httpx
 from starlette.responses import RedirectResponse
 
@@ -9,6 +9,14 @@ async def forward(request: Request):
     # Extract query parameters as a dictionary
     query_params = dict(request.query_params)
     
+    # If no parameters are submitted, show help information
+    if not query_params:
+        return {
+            "error": "No parameters provided.",
+            "help": "This endpoint forwards parameters to a specified URL. "
+                    "Use `param1` to specify the URL to forward to, followed by any other parameters you wish to forward."
+        }
+    
     # Extract the URL to forward to (param1)
     forward_url = query_params.pop('param1', None)