refactor(@angular/cli): add a get best practices guide MCP tool

packages/angular/cli/src/commands/mcp/mcp-server.ts

@@ -12,6 +12,7 @@ import path from 'node:path';
 import { z } from 'zod';
 import type { AngularWorkspace } from '../../utilities/config';
 import { VERSION } from '../../utilities/version';
+import { registerBestPracticesTool } from './tools/best-practices';
 import { registerDocSearchTool } from './tools/doc-search';
 
 export async function createMcpServer(context: {
@@ -48,6 +49,8 @@ export async function createMcpServer(context: {
     },
   );
 
+  registerBestPracticesTool(server);
+
   server.registerTool(
     'list_projects',
     {

packages/angular/cli/src/commands/mcp/tools/best-practices.ts

@@ -0,0 +1,45 @@
+/**
+ * @license
+ * Copyright Google LLC All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.dev/license
+ */
+
+import type { McpServer } from '@modelcontextprotocol/sdk/server/mcp.js';
+import { readFile } from 'node:fs/promises';
+import path from 'node:path';
+
+export function registerBestPracticesTool(server: McpServer): void {
+  server.registerTool(
+    'get_best_practices',
+    {
+      title: 'Get Angular Coding Best Practices Guide',
+      description:
+        'You **MUST** use this tool to retrieve the Angular Best Practices Guide ' +
+        'before any interaction with Angular code (creating, analyzing, modifying). ' +
+        'It is mandatory to follow this guide to ensure all code adheres to ' +
+        'modern standards, including standalone components, typed forms, and ' +
+        'modern control flow. This is the first step for any Angular task.',
+      annotations: {
+        readOnlyHint: true,
+        openWorldHint: false,
+      },
+    },
+    async () => {
+      const text = await readFile(
+        path.join(__dirname, '..', 'instructions', 'best-practices.md'),
+        'utf-8',
+      );
+
+      return {
+        content: [
+          {
+            type: 'text',
+            text,
+          },
+        ],
+      };
+    },
+  );
+}