Fix AnalyticsTool schema rejected by OpenAI function-calling API

Change AnalyticsInput fields from str | Dict[str, Any] to str and parse
JSON inside _run(). OpenAI requires additionalProperties: false on all
object schemas, which Dict[str, Any] cannot satisfy.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tools/analytics_tool.py

@@ -1,3 +1,4 @@
+import json
 from crewai.tools import BaseTool
 from pydantic import BaseModel, Field
 from typing import Dict, Any, Type
@@ -5,9 +6,9 @@ from typing import Dict, Any, Type
 
 # ---------- Input Schema ----------
 class AnalyticsInput(BaseModel):
-    market_data: str | Dict[str, Any] = Field(..., description="Structured JSON from MarketDataTool")
-    historical_data: str | Dict[str, Any] = Field(..., description="Structured JSON from HistoricalDataTool")
-    sentiment_data: str | Dict[str, Any] = Field(..., description="Structured JSON from SentimentTool")
+    market_data: str = Field(..., description="Structured JSON string from MarketDataTool")
+    historical_data: str = Field(..., description="Structured JSON string from HistoricalDataTool")
+    sentiment_data: str = Field(..., description="Structured JSON string from SentimentTool")
 
 
 # ---------- Tool ----------
@@ -20,8 +21,16 @@ class AnalyticsTool(BaseTool):
     )
     args_schema: Type[BaseModel] = AnalyticsInput
 
-    def _run(self, market_data: dict, historical_data: dict, sentiment_data: dict) -> dict:
+    def _run(self, market_data: str, historical_data: str, sentiment_data: str) -> dict:
         try:
+            # Parse JSON strings into dicts
+            if isinstance(market_data, str):
+                market_data = json.loads(market_data)
+            if isinstance(historical_data, str):
+                historical_data = json.loads(historical_data)
+            if isinstance(sentiment_data, str):
+                sentiment_data = json.loads(sentiment_data)
+
             # ------------------------------------------------------------
             # 1) Extract fields from structured tool outputs
             # ------------------------------------------------------------