fix coerce url

tool.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import json
 import os
-from typing import Optional, Tuple
+from typing import Optional
 
 import requests
 from smolagents.tools import Tool
@@ -27,7 +27,7 @@ class BrightDataScraperTool(Tool):
         super().__init__()
 
     def forward(self, url) -> str:
-        url_str, _ = self._coerce_url_input(url)
+        url_str = self._coerce_url_input(url)
 
         if not url_str:
             return json.dumps({"error": "No valid URL provided"})
@@ -59,20 +59,22 @@ class BrightDataScraperTool(Tool):
             details = exc.response.text if getattr(exc, "response", None) is not None else ""
             return json.dumps({"error": str(exc), "details": details})
 
-    def _coerce_url_input(self, raw) -> Tuple[Optional[str], Optional[str]]:
+    def _coerce_url_input(self, raw) -> Optional[str]:
         if isinstance(raw, str):
-            return raw, None
+            return self._ensure_scheme(raw)
 
         if isinstance(raw, dict):
             orig_name = raw.get("orig_name")
             if isinstance(orig_name, str) and orig_name:
-                return self._ensure_scheme(orig_name), None
+                return self._ensure_scheme(orig_name)
 
             url_value = raw.get("url")
             if isinstance(url_value, str):
-                return url_value, None
+                if url_value.startswith(("http://", "https://")):
+                    return url_value
+                return None
 
-        return None, None
+        return None
 
     def _parse_file_dict_string(self, value: str) -> Optional[dict]:
         import ast