weather
mcp-weather-ts
TypeScript MCP 服务器,将 National Weather Service API 中的美国天气数据提供给 Cursor 等宿主。
宿主启动 node build/index.js,并通过 stdio 以 JSON-RPC 进行通信。模型本身不会直接调用 NWS,而是调用该服务器的工具(也可以读取资源或使用提示)。
MCP 工作原理(工具、资源、提示、传输):docs/create-mcp.readme.md。
环境要求
Node.js 22+(本仓库使用 ESM 和
fetch)npm
可访问
https://api.weather.gov的网络(仅限美国地区)
Related MCP server: weather
设置
npm install
npm run buildtsc 会将 JavaScript 写入 build/。Cursor 必须运行构建后的文件,而不是 src/index.ts。
脚本
命令 | 作用 |
| 将 |
| 对 NWS 做冒烟测试:访问 |
在 Cursor 中挂载
构建(
npm run build)。在本项目中添加
.cursor/mcp.json:
{
"mcpServers": {
"weather": {
"type": "stdio",
"command": "node",
"args": ["${workspaceFolder}/build/index.js"]
}
}
}对于所有 Cursor 项目,请使用 %USERPROFILE%\.cursor\mcp.json 以及 build\index.js 的完整路径,而不是 ${workspaceFolder}。
打开自定义 → MCP(或 Cursor 设置 → MCP)并启用 weather。
修改
src/后,再次运行npm run build,并将服务器关闭再打开,以便 Cursor 重启该进程。
服务器连接后,请勿使用 console.log:stdout 是 MCP 的通信通道。日志请使用 console.error。
你可以调用什么
工具
模型(或你在 Agent 聊天中提问)通过 tools/call 调用以下工具。
名称 | 输入 | 作用 |
|
| 该州的生效警报 |
|
| 12 小时预报(NWS 先访问 |
|
| 练习: |
聊天示例:
“CA 有什么天气警报吗?”
“39.7456, -97.0892 的预报”
参数示例:
{ "state": "CA" }{ "latitude": 39.7456, "longitude": -97.0892 }资源
名称 | URI | 作用 |
|
| 关于工具和 NWS 查询流程的简短静态说明 |
请让智能体读取 weather://nws-guide,或在客户端中使用 resources/read。
提示
名称 | 参数 | 作用 |
|
| 用户消息模板,指示模型使用 |
在 Cursor 中,选择 Check weather 提示并填写 place。
项目结构
src/index.ts Create McpServer, register, connect stdio
src/tools.ts get_alerts, get_forecast, test_tool
src/resources.ts weather://nws-guide
src/prompts.ts check_weather
src/weather-api-call.ts NWS fetch + types + alert formatting
src/createTransport.ts StdioServerTransport + connect
tests/weather-api-call.test.ts
docs/create-mcp.readme.md How to design MCP serverssrc/index.ts 中的启动顺序:
new McpServer({ name: "weather", version: "1.0.0" })registerWeatherTools/registerWeatherResources/registerWeatherPromptsconnectStdioTransport(server)
NWS 说明
预报并不位于
/points/{lat},{lon}/forecast。请先加载/points/{lat},{lon}(保留四位小数),然后再访问properties.forecast或properties.forecastHourly。NWS 要求提供
User-Agent请求头(已在weather-api-call.ts中设置)。覆盖范围为美国(及部分领地)。其他坐标通常会失败。
故障排查
症状 | 尝试方法 |
服务器红色 / 没有工具 | 重新构建,确认 |
握手失败 | 确保你已 |
预报为空或失败 | 仅支持美国经纬度;查看 MCP 日志 |
| 网络 / NWS 故障 |
Cursor:输出 → MCP 日志。
许可证
ISC
Maintenance
Resources
Unclaimed servers have limited discoverability.
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If you are the server author, to access and configure the admin panel.
Tools
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