Update app.py

app.py

@@ -60,6 +60,12 @@ async def notes_llm_route(
     use_rlhf: bool = Query(False),
     user_api_key: Optional[str] = Form(None)
 ):
+    if not user_api_key or user_api_key.strip() == "":
+        raise HTTPException(
+            status_code=400, 
+            detail="Missing required parameter: 'user_api_key'. Please provide your OpenRouter API key as a form parameter (not in JSON body)."
+        )
+    
     file_path = f"data/input/{file.filename}"
     os.makedirs("data/input", exist_ok=True)
     with open(file_path, "wb") as buffer:
@@ -110,6 +116,8 @@ async def notes_llm_route(
 
     except ValueError as ve:
         logger.error(f"API key error: {ve}")
+        if "API key is required" in str(ve):
+            raise HTTPException(status_code=400, detail="Missing OpenRouter API key. Please provide your API key via the 'user_api_key' form parameter.")
         raise HTTPException(status_code=400, detail=str(ve))
     except Exception as e:
         logger.error(f"LLM Notes pipeline failed: {e}")
@@ -328,6 +336,12 @@ async def pnl_route(file: UploadFile = File(...), use_rlhf: bool = Query(False))
 
 @router.post("/bs")
 async def bs_route(file: UploadFile = File(...), use_rlhf: bool = Query(False), user_api_key: Optional[str] = Form(None)):
+    if not user_api_key or user_api_key.strip() == "":
+        raise HTTPException(
+            status_code=400, 
+            detail="Missing required parameter: 'user_api_key'. Please provide your OpenRouter API key as a form parameter (not in JSON body)."
+        )
+    
     file_path = f"data/input/{file.filename}"
     os.makedirs("data/input", exist_ok=True)
     with open(file_path, "wb") as buffer:
@@ -358,7 +372,14 @@ async def bs_route(file: UploadFile = File(...), use_rlhf: bool = Query(False),
         
         return response
     else:
-        raise HTTPException(status_code=500, detail=result["error"])
+        error_msg = result.get("error", "Unknown error")
+        # Check if error is about missing API key
+        if "Missing OpenRouter API key" in error_msg:
+            raise HTTPException(
+                status_code=400, 
+                detail="Missing OpenRouter API key. Please provide your API key via the 'user_api_key' form parameter."
+            )
+        raise HTTPException(status_code=500, detail=error_msg)
 
 
 @router.post("/cf")