main.ts•1.56 kB
import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import { z } from "zod";
// Servidor MCP es la interfaz con el protocolo MCP. Maneja la comunicación entre el cliente y el servidor
const server = new McpServer({
name: "demo",
version: "1.0.0",
description: "A simple MCP server for testing",
});
server.tool(
"get-weather",
"Tool to fetch the weather for a given city",
{
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.length === 0) {
return {
content: [
{
type: "text",
text: `No weather data found for ${city}`,
}
]
};
}
const {latitude, longitude} = data.results[0];
const weatherResponse = await fetch(`https://api.open-meteo.com/v1/forecast?latitude=${latitude}&longitude=${longitude}¤t_weather=true&precipitation=true&hourly=temperature_2m¤t=precipitation,temperature_2m,rain,is_day`);
const weatherData = await weatherResponse.json();
return {
content: [
{
type: "text",
text: JSON.stringify(weatherData, null, 2)
}
]
};
}
);
const transport = new StdioServerTransport();
await server.connect(transport);
console.log("Server is running on stdin/stdout");