fix payload

tool.py

@@ -79,34 +79,39 @@ class BrightDataDatasetTool(Tool):
             num_of_reviews: Optional[str] = None,
             num_of_comments: Optional[str] = None,
         ) -> str:
-        url = self._coerce_url_input(url)
-
-        api_token = os.getenv("BRIGHT_DATA_API_TOKEN")
-        if not api_token:
-            raise ValueError("BRIGHT_DATA_API_TOKEN not found in environment variables")
-
-        if dataset not in self.datasets:
-            raise ValueError(f"Unknown dataset '{dataset}'. Valid options: {', '.join(sorted(self.datasets.keys()))}")
-
-        params = self._build_params(
-            url=url,
-            keyword=keyword,
-            first_name=first_name,
-            last_name=last_name,
-            days_limit=days_limit,
-            num_of_reviews=num_of_reviews,
-            num_of_comments=num_of_comments,
-        )
+        try:
+            url = self._coerce_url_input(url)
+
+            api_token = os.getenv("BRIGHT_DATA_API_TOKEN")
+            if not api_token:
+                raise ValueError("BRIGHT_DATA_API_TOKEN not found in environment variables")
+
+            if dataset not in self.datasets:
+                raise ValueError(
+                    f"Unknown dataset '{dataset}'. Valid options: {', '.join(sorted(self.datasets.keys()))}"
+                )
+
+            params = self._build_params(
+                url=url,
+                keyword=keyword,
+                first_name=first_name,
+                last_name=last_name,
+                days_limit=days_limit,
+                num_of_reviews=num_of_reviews,
+                num_of_comments=num_of_comments,
+            )
 
-        payload = self._prepare_payload(dataset, params)
+            payload = self._prepare_payload(dataset, params)
 
-        try:
             snapshot_id = self._trigger_snapshot(dataset, payload, api_token)
             data = self._poll_snapshot(snapshot_id, api_token)
             return json.dumps(data, indent=2)
+
         except requests.exceptions.RequestException as exc:
             details = exc.response.text if getattr(exc, "response", None) is not None else ""
             return json.dumps({"error": str(exc), "details": details, "payload": payload, "coerced_url": url})
+        except Exception as exc:
+            return json.dumps({"error": str(exc)})
 
     def _build_params(
         self,