Starter MCP Server

import type { AlertsResponse } from '../types' import { z } from 'zod' import { NWS_API_BASE } from '../constants' import { server } from '../server' import { formatAlert, makeNWSRequest } from '../utils' export function registerGetAlerts() { server.registerTool( 'get-alerts', { title: 'Weather alerts', description: 'Get weather alerts for a state', inputSchema: z.object({ state: z.string().length(2).describe('Two-letter state code (e.g. CA, NY)'), }), }, async ({ state }) => { const stateCode = state.toUpperCase() const alertsUrl = `${NWS_API_BASE}/alerts?area=${stateCode}` const alertsData = await makeNWSRequest<AlertsResponse>(alertsUrl) if (!alertsData) { return { content: [ { type: 'text', text: 'Failed to retrieve alerts data', }, ], } } const features = alertsData.features || [] if (features.length === 0) { return { content: [ { type: 'text', text: `No active alerts for ${stateCode}`, }, ], } } const formattedAlerts = features.map(formatAlert) const alertsText = `Active alerts for ${stateCode}:\n\n${formattedAlerts.join('\n')}` return { content: [ { type: 'text', text: alertsText, }, ], } }, ) }