IT Tools MCP Server

import { McpServer } from "@modelcontextprotocol/sdk/server/mcp.js"; import { z } from "zod"; export function registerDiffJson(server: McpServer) { server.registerTool("compare_json", { description: "Compare two JSON objects and show differences", inputSchema: { json1: z.string().describe("First JSON object"), json2: z.string().describe("Second JSON object"), }, // VS Code compliance annotations annotations: { title: "Compare Json", description: "Compare two JSON objects and show differences", readOnlyHint: false } }, async ({ json1, json2 }) => { try { const obj1 = JSON.parse(json1); const obj2 = JSON.parse(json2); function deepCompare(a: any, b: any, path = ""): string[] { const differences: string[] = []; if (typeof a !== typeof b) { differences.push(`${path}: Type difference - ${typeof a} vs ${typeof b}`); return differences; } if (a === null || b === null) { if (a !== b) { differences.push(`${path}: ${a} vs ${b}`); } return differences; } if (typeof a === 'object' && !Array.isArray(a)) { const keysA = Object.keys(a); const keysB = Object.keys(b); const allKeys = new Set([...keysA, ...keysB]); for (const key of allKeys) { const newPath = path ? `${path}.${key}` : key; if (!(key in a)) { differences.push(`${newPath}: Missing in first object`); } else if (!(key in b)) { differences.push(`${newPath}: Missing in second object`); } else { differences.push(...deepCompare(a[key], b[key], newPath)); } } } else if (Array.isArray(a) && Array.isArray(b)) { const maxLength = Math.max(a.length, b.length); for (let i = 0; i < maxLength; i++) { const newPath = `${path}[${i}]`; if (i >= a.length) { differences.push(`${newPath}: Missing in first array`); } else if (i >= b.length) { differences.push(`${newPath}: Missing in second array`); } else { differences.push(...deepCompare(a[i], b[i], newPath)); } } } else if (a !== b) { differences.push(`${path}: ${JSON.stringify(a)} vs ${JSON.stringify(b)}`); } return differences; } const differences = deepCompare(obj1, obj2); if (differences.length === 0) { return { content: [ { type: "text", text: "✅ JSON objects are identical - no differences found.", }, ], }; } else { return { content: [ { type: "text", text: `❌ Found ${differences.length} difference(s): ${differences.map((diff, i) => `${i + 1}. ${diff}`).join('\n')}`, }, ], }; } } catch (error) { return { content: [ { type: "text", text: `Error comparing JSON: ${error instanceof Error ? error.message : 'Unknown error'}`, }, ], }; } } ); }