feat: 添加天气、网页搜索mcp

server/mcp_tools/weather.py

@@ -0,0 +1,92 @@
+"""天气查询工具"""
+import httpx
+from typing import Optional
+
+
+async def get_weather(
+    city: str,
+    units: str = "metric",
+    language: str = "zh_cn"
+) -> dict:
+    """
+    获取指定城市的天气信息
+
+    Args:
+        city: 城市名称，支持中文城市名（如"北京"、"上海"）或英文城市名（如"Beijing"、"London"）
+        units: 单位系统，"metric"（摄氏度）或 "imperial"（华氏度），默认为 "metric"
+        language: 返回结果的语言，默认为中文（zh_cn）
+
+    Returns:
+        dict: 包含天气信息的字典，包括：
+            - city: 城市名称
+            - temperature: 当前温度
+            - description: 天气描述
+            - humidity: 湿度百分比
+            - wind_speed: 风<><E9A38E>
+            - feels_like: 体感温度
+            - temp_min: 最低温度
+            - temp_max: 最高温度
+
+    Example:
+        >>> result = await get_weather("北京")
+        >>> print(result['temperature'])
+        15
+
+        >>> result = await get_weather("Tokyo", units="metric")
+        >>> print(result['description'])
+        晴朗
+    """
+    # 使用 OpenWeatherMap API 的免费端点
+    # 注意：实际使用需要申请 API key，这里使用 wttr.in 作为免费替代
+    base_url = "https://wttr.in"
+
+    params = {
+        "format": "j1",  # JSON 格式
+        "lang": language,
+    }
+
+    # 处理单位系统
+    if units == "imperial":
+        params["u"] = "f"  # 华氏度
+    else:
+        params["u"] = "c"  # 摄氏度（默认）
+
+    try:
+        async with httpx.AsyncClient(timeout=10.0) as client:
+            response = await client.get(f"{base_url}/{city}", params=params)
+            response.raise_for_status()
+            data = response.json()
+
+            # 解析当前天气
+            current = data.get("current_condition", [{}])[0]
+
+            # 解析位置信息
+            location = data.get("nearest_area", [{}])[0]
+
+            return {
+                "city": location.get("areaName", [{}])[0].get("value", city),
+                "country": location.get("country", [{}])[0].get("value", ""),
+                "temperature": float(current.get("temp_C", 0) if units == "metric" else current.get("temp_F", 0)),
+                "description": current.get("weatherDesc", [{}])[0].get("value", "未知"),
+                "humidity": int(current.get("humidity", 0)),
+                "wind_speed": float(current.get("windspeedKmph", 0)),
+                "feels_like": float(current.get("FeelsLikeC", 0) if units == "metric" else current.get("FeelsLikeF", 0)),
+                "temp_min": float(current.get("temp_C", 0) if units == "metric" else current.get("temp_F", 0)),  # wttr.in 不提供 min/max，使用当前温度
+                "temp_max": float(current.get("temp_C", 0) if units == "metric" else current.get("temp_F", 0)),
+                "uv_index": int(current.get("uvIndex", 0)),
+            }
+    except httpx.TimeoutException:
+        return {
+            "error": "请求超时，请稍后重试",
+            "city": city
+        }
+    except httpx.HTTPError as e:
+        return {
+            "error": f"获取天气信息失败: {str(e)}",
+            "city": city
+        }
+    except (KeyError, IndexError, ValueError) as e:
+        return {
+            "error": f"解析天气数据失败: {str(e)}",
+            "city": city
+        }