IT Tools MCP Server

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { z } from "zod"; export function registerIpSubnetCalculator(server: McpServer) { server.registerTool("calculate_ip_subnet", { description: "Calculate subnet information for IPv4", inputSchema: { ip: z.string().describe("IPv4 address (e.g., 192.168.1.1)"), cidr: z.number().describe("CIDR notation (e.g., 24)"), }, // VS Code compliance annotations annotations: { title: "Ip-subnet-calculator", description: "Calculate subnet information for IPv4", readOnlyHint: false } }, async ({ ip, cidr }) => { try { if (cidr < 1 || cidr > 32) { return { content: [ { type: "text", text: "CIDR must be between 1 and 32.", }, ], }; } const ipParts = ip.split('.').map(part => { const num = parseInt(part); if (isNaN(num) || num < 0 || num > 255) { throw new Error(`Invalid IP address part: ${part}`); } return num; }); if (ipParts.length !== 4) { throw new Error("Invalid IP address format"); } // Calculate subnet mask const mask = (0xFFFFFFFF << (32 - cidr)) >>> 0; const maskParts = [ (mask >>> 24) & 0xFF, (mask >>> 16) & 0xFF, (mask >>> 8) & 0xFF, mask & 0xFF ]; // Calculate network address const ipNum = (ipParts[0] << 24) | (ipParts[1] << 16) | (ipParts[2] << 8) | ipParts[3]; const networkNum = (ipNum & mask) >>> 0; const networkParts = [ (networkNum >>> 24) & 0xFF, (networkNum >>> 16) & 0xFF, (networkNum >>> 8) & 0xFF, networkNum & 0xFF ]; // Calculate broadcast address const broadcastNum = (networkNum | (0xFFFFFFFF >>> cidr)) >>> 0; const broadcastParts = [ (broadcastNum >>> 24) & 0xFF, (broadcastNum >>> 16) & 0xFF, (broadcastNum >>> 8) & 0xFF, broadcastNum & 0xFF ]; // Calculate first and last usable addresses const firstUsableNum = networkNum + 1; const lastUsableNum = broadcastNum - 1; const firstUsableParts = [ (firstUsableNum >>> 24) & 0xFF, (firstUsableNum >>> 16) & 0xFF, (firstUsableNum >>> 8) & 0xFF, firstUsableNum & 0xFF ]; const lastUsableParts = [ (lastUsableNum >>> 24) & 0xFF, (lastUsableNum >>> 16) & 0xFF, (lastUsableNum >>> 8) & 0xFF, lastUsableNum & 0xFF ]; const totalHosts = Math.pow(2, 32 - cidr); const usableHosts = totalHosts - 2; return { content: [ { type: "text", text: `IPv4 Subnet Information: Input: ${ip}/${cidr} Network Address: ${networkParts.join('.')} Subnet Mask: ${maskParts.join('.')} Broadcast Address: ${broadcastParts.join('.')} First Usable: ${firstUsableParts.join('.')} Last Usable: ${lastUsableParts.join('.')} Total Addresses: ${totalHosts} Usable Addresses: ${usableHosts} CIDR: /${cidr}`, }, ], }; } catch (error) { return { content: [ { type: "text", text: `Error calculating subnet: ${error instanceof Error ? error.message : 'Unknown error'}`, }, ], }; } } ); }