fix: improve data vendor implementations and tool signatures

- Add get_global_news for Alpha Vantage
- Fix get_insider_transactions signature (remove unused curr_date param)
- Remove unnecessary default params from API calls (sort, limit, tab)

tradingagents/dataflows/alpha_vantage.py

@@ -2,4 +2,4 @@
 from .alpha_vantage_stock import get_stock
 from .alpha_vantage_indicator import get_indicator
 from .alpha_vantage_fundamentals import get_fundamentals, get_balance_sheet, get_cashflow, get_income_statement
-from .alpha_vantage_news import get_news, get_insider_transactions
+from .alpha_vantage_news import get_news, get_global_news, get_insider_transactions

tradingagents/dataflows/alpha_vantage_news.py

@@ -18,12 +18,40 @@ def get_news(ticker, start_date, end_date) -> dict[str, str] | str:
         "tickers": ticker,
         "time_from": format_datetime_for_api(start_date),
         "time_to": format_datetime_for_api(end_date),
-        "sort": "LATEST",
-        "limit": "50",
     }
-    
+
     return _make_api_request("NEWS_SENTIMENT", params)
 
+def get_global_news(curr_date, look_back_days: int = 7, limit: int = 50) -> dict[str, str] | str:
+    """Returns global market news & sentiment data without ticker-specific filtering.
+
+    Covers broad market topics like financial markets, economy, and more.
+
+    Args:
+        curr_date: Current date in yyyy-mm-dd format.
+        look_back_days: Number of days to look back (default 7).
+        limit: Maximum number of articles (default 50).
+
+    Returns:
+        Dictionary containing global news sentiment data or JSON string.
+    """
+    from datetime import datetime, timedelta
+
+    # Calculate start date
+    curr_dt = datetime.strptime(curr_date, "%Y-%m-%d")
+    start_dt = curr_dt - timedelta(days=look_back_days)
+    start_date = start_dt.strftime("%Y-%m-%d")
+
+    params = {
+        "topics": "financial_markets,economy_macro,economy_monetary",
+        "time_from": format_datetime_for_api(start_date),
+        "time_to": format_datetime_for_api(curr_date),
+        "limit": str(limit),
+    }
+
+    return _make_api_request("NEWS_SENTIMENT", params)
+
+
 def get_insider_transactions(symbol: str) -> dict[str, str] | str:
     """Returns latest and historical insider transactions by key stakeholders.
 

tradingagents/dataflows/interface.py

@@ -20,6 +20,7 @@ from .alpha_vantage import (
     get_income_statement as get_alpha_vantage_income_statement,
     get_insider_transactions as get_alpha_vantage_insider_transactions,
     get_news as get_alpha_vantage_news,
+    get_global_news as get_alpha_vantage_global_news,
 )
 from .alpha_vantage_common import AlphaVantageRateLimitError
 
@@ -100,6 +101,7 @@ VENDOR_METHODS = {
     },
     "get_global_news": {
         "yfinance": get_global_news_yfinance,
+        "alpha_vantage": get_alpha_vantage_global_news,
     },
     "get_insider_transactions": {
         "alpha_vantage": get_alpha_vantage_insider_transactions,

tradingagents/dataflows/yfinance_news.py

@@ -64,7 +64,7 @@ def get_news_yfinance(
     """
     try:
         stock = yf.Ticker(ticker)
-        news = stock.get_news(count=20, tab="news")
+        news = stock.get_news(count=20)
 
         if not news:
             return f"No news found for {ticker}"