MCP Language Server

#!/usr/bin/env node import { Server } from '@modelcontextprotocol/sdk/server/index.js'; import { StdioServerTransport } from '@modelcontextprotocol/sdk/server/stdio.js'; import { CallToolRequestSchema, ErrorCode, ListToolsRequestSchema, McpError, } from '@modelcontextprotocol/sdk/types.js'; import { Client } from '@microsoft/microsoft-graph-client'; import 'isomorphic-fetch'; const TENANT_ID = process.env.TENANT_ID; const CLIENT_ID = process.env.CLIENT_ID; const CLIENT_SECRET = process.env.CLIENT_SECRET; if (!TENANT_ID || !CLIENT_ID || !CLIENT_SECRET) { throw new Error('Required environment variables are missing'); } class PowerPlatformServer { private server: Server; private graphClient: Client; constructor() { this.server = new Server( { name: 'cisa-powerplatform', version: '0.1.0', }, { capabilities: { tools: {}, }, } ); // Initialize Graph client this.graphClient = Client.init({ authProvider: async (done) => { // TODO: Implement token acquisition done(null, 'token'); }, }); this.setupToolHandlers(); // Error handling this.server.onerror = (error) => console.error('[MCP Error]', error); process.on('SIGINT', async () => { await this.server.close(); process.exit(0); }); } private setupToolHandlers() { this.server.setRequestHandler(ListToolsRequestSchema, async () => ({ tools: [ { name: 'restrict_environment_creation', description: 'Restrict production, sandbox, and trial environment creation to admins (MS.POWERPLATFORM.1.1v1, MS.POWERPLATFORM.1.2v1)', inputSchema: { type: 'object', properties: { adminGroupId: { type: 'string', description: 'ID of the admin group to grant permissions to', }, }, required: ['adminGroupId'], }, }, { name: 'configure_dlp_policy', description: 'Create DLP policy to restrict connector access in default environment (MS.POWERPLATFORM.2.1v1)', inputSchema: { type: 'object', properties: { allowedConnectors: { type: 'array', items: { type: 'string' }, description: 'List of allowed connector IDs', }, }, required: ['allowedConnectors'], }, }, { name: 'enable_tenant_isolation', description: 'Enable Power Platform tenant isolation (MS.POWERPLATFORM.3.1v1)', inputSchema: { type: 'object', properties: {}, }, }, { name: 'get_policy_status', description: 'Get current status of all CISA Power Platform security policies', inputSchema: { type: 'object', properties: {}, }, }, ], })); this.server.setRequestHandler(CallToolRequestSchema, async (request) => { try { switch (request.params.name) { case 'restrict_environment_creation': return await this.restrictEnvironmentCreation(request.params.arguments); case 'configure_dlp_policy': return await this.configureDlpPolicy(request.params.arguments); case 'enable_tenant_isolation': return await this.enableTenantIsolation(); case 'get_policy_status': return await this.getPolicyStatus(); default: throw new McpError( ErrorCode.MethodNotFound, `Unknown tool: ${request.params.name}` ); } } catch (error: any) { if (error instanceof McpError) { throw error; } throw new McpError( ErrorCode.InternalError, `Error executing tool: ${error?.message || 'Unknown error'}` ); } }); } private async restrictEnvironmentCreation(args: any) { // TODO: Implement environment creation restriction logic return { content: [ { type: 'text', text: 'Environment creation restrictions applied successfully', }, ], }; } private async configureDlpPolicy(args: any) { // TODO: Implement DLP policy configuration logic return { content: [ { type: 'text', text: 'DLP policy configured successfully', }, ], }; } private async enableTenantIsolation() { // TODO: Implement tenant isolation logic return { content: [ { type: 'text', text: 'Tenant isolation enabled successfully', }, ], }; } private async getPolicyStatus() { // TODO: Implement policy status check logic return { content: [ { type: 'text', text: JSON.stringify({ environmentCreation: 'Restricted to admins', dlpPolicy: 'Configured', tenantIsolation: 'Enabled', }, null, 2), }, ], }; } async run() { const transport = new StdioServerTransport(); await this.server.connect(transport); console.error('Power Platform MCP server running on stdio'); } } const server = new PowerPlatformServer(); server.run().catch(console.error);