fix: remove $ prefix from f-strings in BrightDataSearchTool.get_search_url

The get_search_url method used JavaScript template literal syntax (${query})
instead of Python f-string syntax ({query}), causing a literal '$' character
to be prepended to all search queries for Google, Bing, and Yandex.

Fixes #5269

Co-Authored-By: João <joao@crewai.com>

lib/crewai-tools/src/crewai_tools/tools/brightdata_tool/brightdata_serp.py

@@ -131,10 +131,10 @@ class BrightDataSearchTool(BaseTool):
 
     def get_search_url(self, engine: str, query: str) -> str:
         if engine == "yandex":
-            return f"https://yandex.com/search/?text=${query}"
+            return f"https://yandex.com/search/?text={query}"
         if engine == "bing":
-            return f"https://www.bing.com/search?q=${query}"
-        return f"https://www.google.com/search?q=${query}"
+            return f"https://www.bing.com/search?q={query}"
+        return f"https://www.google.com/search?q={query}"
 
     def _run(
         self,

lib/crewai-tools/tests/tools/brightdata_serp_tool_test.py

@@ -45,6 +45,60 @@ class TestBrightDataSearchTool(unittest.TestCase):
         result = self.tool._run(query="AI", search_engine="google")
         self.assertIn("Error", result)
 
+    @patch.dict(
+        "os.environ",
+        {"BRIGHT_DATA_API_KEY": "test_api_key", "BRIGHT_DATA_ZONE": "test_zone"},
+    )
+    def test_get_search_url_google_no_dollar_prefix(self):
+        """Test that Google search URL does not contain a '$' prefix before the query."""
+        tool = BrightDataSearchTool()
+        url = tool.get_search_url("google", "AI news")
+        self.assertEqual(url, "https://www.google.com/search?q=AI news")
+        self.assertNotIn("$", url)
+
+    @patch.dict(
+        "os.environ",
+        {"BRIGHT_DATA_API_KEY": "test_api_key", "BRIGHT_DATA_ZONE": "test_zone"},
+    )
+    def test_get_search_url_bing_no_dollar_prefix(self):
+        """Test that Bing search URL does not contain a '$' prefix before the query."""
+        tool = BrightDataSearchTool()
+        url = tool.get_search_url("bing", "AI news")
+        self.assertEqual(url, "https://www.bing.com/search?q=AI news")
+        self.assertNotIn("$", url)
+
+    @patch.dict(
+        "os.environ",
+        {"BRIGHT_DATA_API_KEY": "test_api_key", "BRIGHT_DATA_ZONE": "test_zone"},
+    )
+    def test_get_search_url_yandex_no_dollar_prefix(self):
+        """Test that Yandex search URL does not contain a '$' prefix before the query."""
+        tool = BrightDataSearchTool()
+        url = tool.get_search_url("yandex", "AI news")
+        self.assertEqual(url, "https://yandex.com/search/?text=AI news")
+        self.assertNotIn("$", url)
+
+    @patch.dict(
+        "os.environ",
+        {"BRIGHT_DATA_API_KEY": "test_api_key", "BRIGHT_DATA_ZONE": "test_zone"},
+    )
+    @patch("requests.post")
+    def test_run_search_url_no_dollar_prefix(self, mock_post):
+        """Test that the full _run flow produces URLs without '$' prefix in the query."""
+        mock_response = MagicMock()
+        mock_response.status_code = 200
+        mock_response.text = "mock response text"
+        mock_post.return_value = mock_response
+
+        tool = BrightDataSearchTool()
+        tool._run(query="test query", search_engine="google")
+
+        call_args = mock_post.call_args
+        request_body = call_args[1]["json"] if "json" in call_args[1] else call_args[0][1]
+        url_sent = request_body["url"]
+        self.assertNotIn("$", url_sent.split("?q=")[1])
+        self.assertIn("q=test%20query", url_sent)
+
     def tearDown(self):
         # Clean up env vars
         pass