Windows Diagnostics MCP Server

import { spawn } from "child_process"; import path from "path"; /** * Run a PowerShell script with parameters * @param script - The script content or file path to execute * @param params - Parameters to pass to the script * @param options - Execution options * @param options.useScriptFile - If true, treats script as a file path and uses -File parameter. * If false/undefined, treats script as content and uses -Command (default behavior) */ export async function runPowerShellScript( script: string, params: { [key: string]: string | number | boolean | string[] | undefined } = {}, options: { useScriptFile?: boolean } = { useScriptFile: false } ): Promise<any> { return new Promise((resolve, reject) => { const psArgs = ["-NoProfile", "-ExecutionPolicy", "Bypass"]; // Build parameter string for PowerShell script invocation const paramStrings: string[] = []; Object.entries(params).forEach(([key, value]) => { if (value === undefined || value === null) return; if (typeof value === "boolean") { if (value) { paramStrings.push(`-${key}`); // Just the switch name if true } // Don't add anything if false } else if (Array.isArray(value)) { const escapedValues = value.map((v) => String(v).replace(/'/g, "''")).join(","); paramStrings.push(`-${key} '${escapedValues}'`); } else { const escapedValue = String(value).replace(/'/g, "''"); paramStrings.push(`-${key} '${escapedValue}'`); } }); // Handle both script file and script content execution if (options.useScriptFile) { // For script files, use -File parameter with path relative to build folder const scriptPath = script.replace(/^src\//, ""); psArgs.push("-File", scriptPath, ...paramStrings); } else { // For script content (legacy behavior), use -Command and wrap in a script block const fullCommand = `& { ${script} } ${paramStrings.join(" ")}`; psArgs.push("-Command", fullCommand); } const powershell = spawn("powershell.exe", psArgs, { stdio: ["pipe", "pipe", "pipe"], shell: false, }); let stdout = ""; let stderr = ""; powershell.stdout.on("data", (data: Buffer) => { stdout += data.toString(); }); powershell.stderr.on("data", (data: Buffer) => { stderr += data.toString(); }); powershell.on("close", (code: number) => { if (code !== 0) { reject(new Error(`PowerShell script failed with code ${code}:\n${stderr}`)); } else { try { const result = JSON.parse(stdout.trim()); resolve(result); } catch (err) { reject( new Error( `Failed to parse JSON output: ${ err instanceof Error ? err.message : String(err) }\nOutput:\n${stdout}` ) ); } } }); powershell.on("error", (error: Error) => { reject(new Error(`Failed to start PowerShell: ${error.message}`)); }); }); }