diff --git a/agent/prompt/builder.py b/agent/prompt/builder.py
index 5e492ef..b618f9d 100644
--- a/agent/prompt/builder.py
+++ b/agent/prompt/builder.py
@@ -214,6 +214,7 @@ def _build_tooling_section(tools: List[Any], language: str) -> List[str]:
         "- 在多步骤任务、敏感操作或用户要求时简要解释决策过程",
         "- 持续推进直到任务完成，完成后向用户报告结果。",
         "- 回复中涉及密钥、令牌等敏感信息必须脱敏。",
+        "- URL链接可直接以文本形式发送",
         "",
     ]
 
diff --git a/agent/tools/web_search/web_search.py b/agent/tools/web_search/web_search.py
index cb5d57c..2132a07 100644
--- a/agent/tools/web_search/web_search.py
+++ b/agent/tools/web_search/web_search.py
@@ -13,6 +13,7 @@ import requests
 
 from agent.tools.base_tool import BaseTool, ToolResult
 from common.log import logger
+from config import conf
 
 
 # Default timeout for API requests (seconds)
@@ -225,7 +226,8 @@ class WebSearch(BaseTool):
         :return: Formatted search results
         """
         api_key = os.environ.get("LINKAI_API_KEY", "")
-        url = "https://api.link-ai.tech/v1/plugin/execute"
+        api_base = conf().get("linkai_api_base", "https://api.link-ai.tech")
+        url = f"{api_base.rstrip('/')}/v1/plugin/execute"
 
         headers = {
             "Content-Type": "application/json",