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Commit b4de9a1

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feat(@angular/cli): add --experimental-tool option to mcp command
This change introduces an `--experimental-tool` flag (with a `-E` alias) to the `ng mcp` command. This flag allows users to enable specific experimental tools by providing their names. Experimental tools are kept separate from the main toolset and are only registered if explicitly enabled via this option. This provides a mechanism for safely developing and testing new tools without exposing them to all users by default.
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2 files changed

+32
-2
lines changed

2 files changed

+32
-2
lines changed

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

Lines changed: 12 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -43,10 +43,20 @@ export default class McpCommandModule extends CommandModule implements CommandMo
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type: 'boolean',
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default: false,
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describe: 'Only register tools that do not require internet access.',
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})
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.option('experimental-tool', {
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type: 'string',
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alias: 'E',
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array: true,
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describe: 'Enable an experimental tool.',
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});
4753
}
4854

49-
async run(options: { readOnly: boolean; localOnly: boolean }): Promise<void> {
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async run(options: {
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readOnly: boolean;
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localOnly: boolean;
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experimentalTool: string[] | undefined;
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}): Promise<void> {
5060
if (isTTY()) {
5161
this.context.logger.info(INTERACTIVE_MESSAGE);
5262

@@ -58,6 +68,7 @@ export default class McpCommandModule extends CommandModule implements CommandMo
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workspace: this.context.workspace,
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readOnly: options.readOnly,
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localOnly: options.localOnly,
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experimentalTools: options.experimentalTool,
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},
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this.context.logger,
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);

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

Lines changed: 20 additions & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -16,13 +16,14 @@ import { DOC_SEARCH_TOOL } from './tools/doc-search';
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import { FIND_EXAMPLE_TOOL } from './tools/examples';
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import { MODERNIZE_TOOL } from './tools/modernize';
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import { LIST_PROJECTS_TOOL } from './tools/projects';
19-
import { registerTools } from './tools/tool-registry';
19+
import { McpToolDeclaration,registerTools } from './tools/tool-registry';
2020

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export async function createMcpServer(
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context: {
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workspace?: AngularWorkspace;
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readOnly?: boolean;
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localOnly?: boolean;
26+
experimentalTools?: string[];
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},
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logger: { warn(text: string): void },
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): Promise<McpServer> {
@@ -53,6 +54,9 @@ export async function createMcpServer(
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FIND_EXAMPLE_TOOL,
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];
5556

57+
// eslint-disable-next-line @typescript-eslint/no-explicit-any
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const experimentalToolDeclarations: McpToolDeclaration<any, any>[] = [];
59+
5660
if (context.readOnly) {
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toolDeclarations = toolDeclarations.filter((tool) => tool.isReadOnly);
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}
@@ -61,6 +65,21 @@ export async function createMcpServer(
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toolDeclarations = toolDeclarations.filter((tool) => tool.isLocalOnly);
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}
6367

68+
if (context.experimentalTools?.length) {
69+
const experimentalToolsMap = new Map(
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experimentalToolDeclarations.map((tool) => [tool.name, tool]),
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);
72+
73+
for (const toolName of context.experimentalTools) {
74+
const tool = experimentalToolsMap.get(toolName);
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if (tool) {
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toolDeclarations.push(tool);
77+
} else {
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logger.warn(`Unknown experimental tool: ${toolName}`);
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}
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}
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}
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6483
await registerTools(
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server,
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{

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