HeFeng Weather MCP Server

Instructions

Implementation Reference

• src/index.ts:324-344 (handler)

  Handler implementation for the 'get_datetime' tool. Parses input arguments using the schema, retrieves current date/time using JavaScript Date object adjusted for the specified timezone (defaults to 'Asia/Shanghai'), handles invalid timezone errors with fallback, and returns a formatted string response.

  } else if (name === "get_datetime") {
      const { timezone } = getDatetimeSchema.parse(args);
      const currentDateTime = new Date();
      let dateTimeString: string;
      const targetTimezone = timezone || 'Asia/Shanghai'; // Default to Asia/Shanghai
  
      try {
          // Use toLocaleString with options to get time in the target timezone
          dateTimeString = currentDateTime.toLocaleString('zh-CN', { timeZone: targetTimezone });
      } catch (error) {
          // Fallback to a known good default if specific timezone fails
          logger.warn(`无效的时区 "${targetTimezone}" 或格式化错误:`, error);
          const fallbackTimezone = 'Asia/Shanghai';
          dateTimeString = currentDateTime.toLocaleString('zh-CN', { timeZone: fallbackTimezone });
          dateTimeString += ` (无法识别提供的时区 "${timezone}", 已回退到 ${fallbackTimezone})`;
      }
  
      return {
          content: [{ type: "text", text: `当前日期时间 (${targetTimezone}): ${dateTimeString}` }],
      };
  }

• src/index.ts:173-175 (schema)

  Zod schema definition for the 'get_datetime' tool input: optional 'timezone' string parameter with description.

  const getDatetimeSchema = z.object({
      timezone: z.string().optional().describe("可选的时区，例如 'America/New_York', 'Europe/London'。如果未提供，默认为 'Asia/Shanghai'。"),
  });

• src/index.ts:183-186 (registration)

  Registration of the 'get_datetime' tool within the 'tools' object, specifying its description and referencing the schema.

  get_datetime: {
      description: "获取当前的日期和时间。可以提供一个可选的时区参数(如 'America/New_York', 'Europe/London')，默认为 'Asia/Shanghai'。",
      schema: getDatetimeSchema,
  },