feat(api): native MCP (Model Context Protocol) server

.changeset/native-mcp-server.md

@@ -0,0 +1,7 @@
+---
+'@rocket.chat/i18n': minor
+'@rocket.chat/meteor': minor
+'@rocket.chat/rest-typings': minor
+---
+
+Adds an AI add-on-gated native Model Context Protocol endpoint and its administration controls in AI Center

apps/meteor/client/views/admin/aiCenter/AICenterOverview.tsx

@@ -14,8 +14,10 @@ const AICenterOverview = (): ReactElement => {
 	const router = useRouter();
 	const { data: hasAILicense, isPending } = useHasLicenseModule(AI_LICENSE_MODULE);
 	const intelligentSearchEnabled = useSetting('AI_Intelligent_Search_Enabled', false);
+	const mcpEnabled = useSetting('MCP_Enabled', false);
 	const searchSettingsHref = router.buildRoutePath({ name: 'admin-ai-center', params: { section: 'search' } });
 	const llmSettingsHref = router.buildRoutePath({ name: 'admin-ai-center', params: { section: 'llm-providers' } });
+	const mcpSettingsHref = router.buildRoutePath({ name: 'admin-ai-center', params: { section: 'mcp' } });
 	const subscriptionHref = router.buildRoutePath({ name: 'subscription' });
 
 	if (isPending) {
@@ -24,12 +26,15 @@ const AICenterOverview = (): ReactElement => {
 
 	let aiSearchStatus: ReactNode;
 	let llmProviderStatus: ReactNode;
+	let mcpStatus: ReactNode;
 	if (hasAILicense === false) {
 		aiSearchStatus = <Tag variant='danger'>{t('Locked')}</Tag>;
 		llmProviderStatus = <Tag variant='danger'>{t('Locked')}</Tag>;
+		mcpStatus = <Tag variant='danger'>{t('Locked')}</Tag>;
 	} else if (hasAILicense) {
 		aiSearchStatus = intelligentSearchEnabled ? <Tag variant='primary'>{t('Enabled')}</Tag> : <Tag>{t('Disabled')}</Tag>;
 		llmProviderStatus = <Tag>{t('Available')}</Tag>;
+		mcpStatus = mcpEnabled ? <Tag variant='primary'>{t('Enabled')}</Tag> : <Tag>{t('Disabled')}</Tag>;
 	}
 
 	return (
@@ -65,6 +70,14 @@ const AICenterOverview = (): ReactElement => {
 							actionLabel={t('Manage')}
 							href={llmSettingsHref}
 						/>
+						<AICenterCapabilityCard
+							icon='link'
+							title={t('MCP')}
+							description={t('AI_Center_MCP_card_description')}
+							status={mcpStatus}
+							actionLabel={t('Configure')}
+							href={mcpSettingsHref}
+						/>
 					</CardGrid>
 				</Box>
 			</PageScrollableContentWithShadow>

apps/meteor/client/views/admin/aiCenter/AICenterRoute.tsx

@@ -21,6 +21,10 @@ const AICenterRoute = (): ReactElement => {
 		return <AISettingsSection section='AI_LLM_Provider' />;
 	}
 
+	if (section === 'mcp') {
+		return <AISettingsSection section='MCP' />;
+	}
+
 	return <AICenterOverview />;
 };
 

apps/meteor/client/views/admin/aiCenter/AISettingsSection.tsx

@@ -4,15 +4,21 @@ import type { ReactElement } from 'react';
 import EditableSettingsProvider from '../settings/EditableSettingsProvider';
 import GenericGroupPage from '../settings/groups/GenericGroupPage';
 
-export type AISettingsSectionName = 'Intelligent_Search' | 'AI_LLM_Provider';
+export type AISettingsSectionName = 'Intelligent_Search' | 'AI_LLM_Provider' | 'MCP';
 
 export type AISettingsSectionProps = {
 	section: AISettingsSectionName;
 };
 
+const sectionTitles: Record<AISettingsSectionName, string> = {
+	Intelligent_Search: 'Intelligent_Search',
+	AI_LLM_Provider: 'AI_Center_LLM_Providers',
+	MCP: 'MCP',
+};
+
 const AISettingsSection = ({ section }: AISettingsSectionProps): ReactElement => {
 	const router = useRouter();
-	const title = section === 'Intelligent_Search' ? 'Intelligent_Search' : 'AI_Center_LLM_Providers';
+	const title = sectionTitles[section];
 
 	return (
 		<EditableSettingsProvider>

apps/meteor/ee/server/api/index.ts

@@ -8,3 +8,4 @@ import '../apps/communication/uikit';
 import './engagementDashboard';
 import './audit';
 import './abac';
+import './mcp';

apps/meteor/ee/server/api/mcp/catalog.spec.ts

@@ -0,0 +1,171 @@
+import { getCuratedTools, getExtendedTools } from './catalog';
+
+jest.mock('../../../../server/api', () => ({
+	API: {
+		api: {
+			typedRoutes: {
+				'/api/v1/chat.postMessage': {
+					post: {
+						tags: ['Chat'],
+						requestBody: {
+							content: {
+								'application/json': {
+									schema: {
+										oneOf: [
+											{
+												type: 'object',
+												description: 'Post by room id',
+												properties: { roomId: { type: 'string' }, text: { type: 'string', nullable: true } },
+												required: ['roomId'],
+											},
+											{
+												type: 'object',
+												description: 'Post by channel',
+												properties: { channel: { type: 'string' }, text: { type: 'string', nullable: true } },
+												required: ['channel'],
+											},
+										],
+									},
+								},
+							},
+						},
+					},
+				},
+				'/api/v1/rooms.get': {
+					get: {
+						tags: ['Rooms'],
+						parameters: [
+							{
+								schema: {
+									type: 'object',
+									properties: { updatedSince: { type: 'string' } },
+									additionalProperties: { type: 'string', nullable: true },
+								},
+							},
+						],
+					},
+				},
+				'/api/v1/rooms.isMember': {
+					get: {
+						tags: ['Rooms'],
+						parameters: [
+							{
+								schema: {
+									type: 'object',
+									properties: {
+										roomId: { type: 'string' },
+										userId: { type: 'string' },
+										username: { type: 'string' },
+									},
+									oneOf: [
+										{ type: 'object', required: ['roomId', 'userId'] },
+										{ type: 'object', required: ['roomId', 'username'] },
+									],
+									additionalProperties: false,
+								},
+							},
+						],
+					},
+				},
+				'/api/v1/dm.files': {
+					get: {
+						tags: ['DM'],
+						parameters: [
+							{
+								schema: {
+									oneOf: [
+										{
+											type: 'object',
+											properties: { thisIsAnExtremelyLongDiscriminatorNameThatEndsInAlpha: { type: 'string' } },
+											required: ['thisIsAnExtremelyLongDiscriminatorNameThatEndsInAlpha'],
+										},
+										{
+											type: 'object',
+											properties: { thisIsAnExtremelyLongDiscriminatorNameThatEndsInBeta: { type: 'string' } },
+											required: ['thisIsAnExtremelyLongDiscriminatorNameThatEndsInBeta'],
+										},
+									],
+								},
+							},
+						],
+					},
+				},
+				'/api/v1/users.delete': {
+					post: {
+						tags: ['Users'],
+						requestBody: { content: { 'application/json': { schema: { type: 'object' } } } },
+					},
+				},
+				'/api/v1/users.register': {
+					post: {
+						tags: ['Users'],
+						requestBody: {
+							content: {
+								'application/json': {
+									schema: { type: 'object', properties: { username: { type: 'string' } }, required: ['username'] },
+								},
+							},
+						},
+					},
+				},
+			},
+		},
+	},
+}));
+
+describe('MCP tool catalog', () => {
+	it('creates one curated tool per discriminated request variant', () => {
+		const tools = getCuratedTools();
+
+		expect(tools.map(({ name }) => name)).toEqual(['chat_postMessage_by_roomId', 'chat_postMessage_by_channel', 'rooms_get']);
+		expect(tools[0]?.inputSchema).toEqual({
+			type: 'object',
+			description: 'Post by room id',
+			properties: { roomId: { type: 'string' }, text: { type: 'string' } },
+			required: ['roomId'],
+		});
+		expect(tools[2]?.inputSchema).toMatchObject({ additionalProperties: { type: 'string' } });
+	});
+
+	it('only exposes allow-listed routes in the extended catalog', () => {
+		const tools = getExtendedTools();
+
+		expect(tools.map(({ name }) => name)).toEqual(
+			expect.arrayContaining([
+				'post_chat_postMessage_by_roomId',
+				'post_chat_postMessage_by_channel',
+				'get_rooms_get',
+				'get_rooms_isMember_by_roomId_userId',
+				'get_rooms_isMember_by_roomId_username',
+			]),
+		);
+		expect(tools.some(({ name }) => name.includes('users_delete'))).toBe(false);
+		expect(tools.some(({ name }) => name.includes('users_register'))).toBe(false);
+	});
+
+	it('generates unique valid names when variant discriminators exceed the MCP limit', () => {
+		const tools = getExtendedTools();
+		const names = tools.map(({ name }) => name);
+		const dmFileNames = tools.filter(({ path }) => path === '/api/v1/dm.files').map(({ name }) => name);
+
+		expect(dmFileNames).toHaveLength(2);
+		expect(new Set(names).size).toBe(names.length);
+		expect(names.every((name) => name.length <= 64 && /^[a-zA-Z0-9_-]+$/.test(name))).toBe(true);
+	});
+
+	it('preserves parent properties when variants only declare required fields', () => {
+		const tools = getExtendedTools().filter(({ name }) => name.startsWith('get_rooms_isMember'));
+
+		for (const { inputSchema } of tools) {
+			const properties = inputSchema.properties as Record<string, unknown>;
+			for (const requiredProperty of inputSchema.required as string[]) {
+				expect(properties).toHaveProperty(requiredProperty);
+			}
+		}
+	});
+
+	it('reuses the generated catalogs between requests', () => {
+		expect(getCuratedTools()).toBe(getCuratedTools());
+		expect(getExtendedTools()).toBe(getExtendedTools());
+	});
+});