import { Server } from "@modelcontextprotocol/sdk/server/index.js";
import { StdioServerTransport } from "@modelcontextprotocol/sdk/server/stdio.js";
import {
CallToolRequest,
CallToolRequestSchema,
ListToolsRequestSchema,
} from "@modelcontextprotocol/sdk/types.js";
import { z } from "zod";
import dotenv from "dotenv";
dotenv.config({
// IMPORTANT: Enter the full absolute path to your .env file here.
// Claude Desktop may not find the .env file if you use a relative path.
// Example: path: "C:/your/path/.env"
path: "C:/your/path/.env",
});
const getWeatherSchema = z.object({
city: z.string(),
});
//console.error("ENV URL:", process.env.WEATHER_API_URL);
//console.error("ENV KEY:", process.env.WEATHER_API_KEY);
const server = new Server(
{
name: "semdin-weather-mcp",
version: "1.0.0",
},
{
capabilities: {
tools: {},
},
}
);
// all avaliable tools
server.setRequestHandler(ListToolsRequestSchema, async () => {
return {
tools: [
{
name: "get-weather",
description: "get weather info from openweather",
inputSchema: {
type: "object",
properties: {
city: {
type: "string",
description: "name of the city (e.g. mardin)",
},
},
required: ["city"],
},
},
],
};
});
// tool body
server.setRequestHandler(CallToolRequestSchema, async (request) => {
const { name, arguments: args } = request.params;
try {
if (name === "get-weather") {
const { city } = getWeatherSchema.parse(args);
const reqUrl = `${process.env.WEATHER_API_URL}?key=${process.env.WEATHER_API_KEY}&q=${city}&aqi=no`;
const data = await fetch(reqUrl);
if (!data.ok) {
return {
content: [
{
type: "text",
text: "Some error occured.",
},
],
};
}
const jsonData = (await data.json()) as any;
return {
content: [
{
type: "text",
text: `the weather in ${city} is currently: ${jsonData.current.temp_c}`,
},
],
};
} else {
return {
content: [
{
type: "text",
text: "unknown tool",
},
],
};
}
} catch (error) {
const err = error as any;
throw new Error(err.message);
}
});
const transport = new StdioServerTransport();
await server.connect(transport);
