main.ts•1.57 kB
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { z } from "zod";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
const server = new McpServer({
name: "mcpWeather",
version: "0.0.1",
});
server.registerTool(
'fetch-weather',
{
title: "Fetch Weather",
description: "Fetches the current weather for a given location.",
inputSchema: z.object({
city: z.string().describe("city name"),
}),
},
async ({ city }) => {
const response = await fetch(`https://geocoding-api.open-meteo.com/v1/search?name=${city}&count=10&language=en&format=json`);
const data = await response.json();
if (!data.results || data.results.length === 0) {
return {
content:[
{
type: 'text',
text: `Could not find city: ${city}.`,
}
]
}
}
const { latitude, longitude } = data.results[0];
const weatherResponse = await fetch(`https://api.open-meteo.com/v1/forecast?latitude=${latitude}&longitude=${longitude}¤t_weather=true`);
const weatherData = await weatherResponse.json();
return {
content: [
{
type: 'text',
text: JSON.stringify(weatherData, null, 2),
}
],
};
}
);
const transport = new StdioServerTransport();
await server.connect(transport);