debug: add logging to trace parameter injection

MCPToolCallRequest has 'args' attribute, not 'arguments'. Fixed
attribute name to match the actual API.

agent/context_injector.py

@@ -45,11 +45,14 @@ class ContextInjector:
         """
         # Inject signature and today_date for trade tools
         if request.name in ["buy", "sell"]:
-            # Add signature and today_date to arguments if not present
+            # Add signature and today_date to args if not present
-            if "signature" not in request.arguments:
+            if "signature" not in request.args:
-                request.arguments["signature"] = self.signature
+                request.args["signature"] = self.signature
-            if "today_date" not in request.arguments:
+            if "today_date" not in request.args:
-                request.arguments["today_date"] = self.today_date
+                request.args["today_date"] = self.today_date
+
+            # Debug logging
+            print(f"[ContextInjector] Tool: {request.name}, Args after injection: {request.args}")
 
         # Call the actual tool handler
         return await handler(request)

agent_tools/tool_trade.py

@@ -44,8 +44,10 @@ def buy(symbol: str, amount: int, signature: str = None, today_date: str = None)
     """
     # Step 1: Get environment variables and basic information
     # Get signature (model name) from parameter or fallback to config/env
+    print(f"[buy] Received signature parameter: {signature}")
     if signature is None:
         signature = get_config_value("SIGNATURE")
+        print(f"[buy] Signature from config: {signature}")
     if signature is None:
         raise ValueError("SIGNATURE not provided and environment variable is not set")