Fix: Flat graph lines - detect AV rate limits + fix 1D/3D/1W mock data point counts

alphavantage_mcp.py

@@ -63,12 +63,21 @@ async def get_market_data(payload: dict):
             # Intraday data (last 4-6 hours, 5-min intervals)
             data, meta_data = ts.get_intraday(symbol=symbol, interval="5min", outputsize='compact')
             logger.info(f"Successfully retrieved intraday data for {symbol}")
+            # Detect Alpha Vantage rate-limit / info response (200 OK but no real data)
+            if isinstance(data, dict) and "Information" in data:
+                raise Exception(f"Alpha Vantage rate limit: {data['Information']}")
+            if isinstance(data, dict) and "Note" in data:
+                raise Exception(f"Alpha Vantage note (rate limit): {data['Note']}")
             meta_data["Source"] = "Real API (Alpha Vantage)"
         else:
             # Daily data for historical ranges
             data, meta_data = ts.get_daily(symbol=symbol, outputsize='full')
             logger.info(f"Successfully retrieved daily data for {symbol}")
-            
+            # Detect Alpha Vantage rate-limit / info response
+            if isinstance(data, dict) and "Information" in data:
+                raise Exception(f"Alpha Vantage rate limit: {data['Information']}")
+            if isinstance(data, dict) and "Note" in data:
+                raise Exception(f"Alpha Vantage note (rate limit): {data['Note']}")
             # Filter data based on time range
             data = filter_data_by_time_range(data, time_range)
             logger.info(f"Filtered to {len(data)} data points for time_range={time_range}")
@@ -119,12 +128,17 @@ async def get_market_data(payload: dict):
         if time_range == "INTRADAY":
             num_points = 100
             time_delta = timedelta(minutes=5)
-        elif time_range in ["1D", "3D"]:
-            num_points = int(time_range[0]) if time_range != "1D" else 1
-            time_delta = timedelta(days=1)
+        elif time_range == "1D":
+            # FIX: 1D needs enough intraday points for a real chart (not just 1!)
+            num_points = 390  # ~6.5 trading hours at 1-min intervals
+            time_delta = timedelta(minutes=1)
+        elif time_range == "3D":
+            # FIX: 3D needs enough points (not just 3!)
+            num_points = 72   # 3 days × 24 hourly data points
+            time_delta = timedelta(hours=1)
         elif time_range == "1W":
-            num_points = 7
-            time_delta = timedelta(days=1)
+            num_points = 168  # 7 days × 24 hourly data points
+            time_delta = timedelta(hours=1)
         elif time_range == "1M":
             num_points = 30
             time_delta = timedelta(days=1)