{"record":{"id":"a4edc8bcb8727c44","repo":"jd-opensource/joyagent-jdgenie","slug":"self-server-url-str-e","errorCode":null,"errorMessage":"{self.server_url} 获取工具列表失败: {str(e)}","messagePattern":"(.+?) 获取工具列表失败: (.+?)","errorType":"exception","errorClass":"Exception","httpStatus":null,"severity":"error","filePath":"genie-client/app/client.py","lineNumber":294,"sourceCode":"        try:\n            async with self._sse_connection() as session:\n                logger.info(f\"{self.server_url} 正在获取工具列表...\")\n                response = await session.list_tools()\n                tools = response.tools if hasattr(response, 'tools') else []\n\n                tool_count = len(tools)\n                logger.info(f\"成功获取 {tool_count} 个工具\")\n\n                # 记录工具名称（如果工具有name属性）\n                if tools and hasattr(tools[0], 'name'):\n                    tool_names = [tool.name for tool in tools if hasattr(tool, 'name')]\n                    logger.debug(f\"工具列表: {', '.join(tool_names)}\")\n\n                return tools\n        except Exception as e:\n            error_msg = f\"{self.server_url} 获取工具列表失败: {str(e)}\"\n            logger.error(error_msg)\n            raise Exception(error_msg) from e\n\n    async def call_tool(self, name: str, arguments: Optional[Dict[str, Any]] = None) -> Any:\n        \"\"\"\n        调用指定的工具\n\n        Args:\n            name: 工具名称\n            arguments: 工具参数字典，默认为空字典\n\n        Returns:\n            Any: 工具执行结果\n\n        Raises:\n            ValueError: 当工具名称无效时抛出\n            Exception: 当工具调用失败时抛出异常\n        \"\"\"\n        # 参数验证\n        if not name or not isinstance(name, str):","sourceCodeStart":276,"sourceCodeEnd":312,"githubUrl":"https://github.com/jd-opensource/joyagent-jdgenie/blob/2417e0b8b636d941ad5fb14c59b20dddfef5375d/genie-client/app/client.py#L276-L312","documentation":"`list_tools` wraps any exception from opening the SSE session or executing the MCP `list_tools` request into an Exception prefixed with the server URL. Like ping_server, it is a labeling wrapper over the underlying auth/network/protocol error.","triggerScenarios":"Calling `await client.list_tools()` when the SSE connection fails (auth/network) or the server returns an invalid tools payload.","commonSituations":"Server doesn't implement the tools capability; MCP protocol version mismatch; same connectivity/auth misconfigurations as ping failures.","solutions":["Check the appended inner message / `__cause__` to identify the root cause (auth, network, or protocol)","Confirm the server actually implements the MCP tools capability and a compatible protocol version","Verify connectivity and credentials (same checks as ping_server)","Capture and inspect server logs for the corresponding request"],"exampleFix":"// before\ntools = await client.list_tools()  # no error context surfaced\n// after\ntry:\n    tools = await client.list_tools()\nexcept Exception as e:\n    logger.exception(e.__cause__)  # inspect the wrapped root cause\n    raise","handlingStrategy":"try-catch","validationCode":"try:\n    await client.ping_server()  # connectivity/auth precheck\nexcept Exception:\n    raise RuntimeError(\"server unavailable; skip list_tools\")\ntypeGuard = None","typeGuard":null,"tryCatchPattern":"try:\n    tools = await client.list_tools()\nexcept Exception as e:\n    logger.error(f\"list_tools failed: {e.__cause__}\")\n    tools = []  # or re-raise depending on criticality","preventionTips":["Confirm server MCP protocol/capability compatibility on upgrades","Precheck with ping_server before listing tools","Keep client and server versions aligned"],"tags":["mcp","tools","sse"],"backgroundTag":"api-error-response","analyzedSha":"2417e0b8b636d941ad5fb14c59b20dddfef5375d","analyzedAt":"2026-09-08T11:28:19.414Z","contentChangedAt":"2026-09-08T11:28:19.414Z","schemaVersion":2},"datasetVersion":"2026-09-16T09:17:16.951Z"}