chore(release): bump to v0.121.2

Co-authored-by: primus-bot[bot] <171087277+primus-bot[bot]@users.noreply.github.com>

deploy/docker-swarm/docker-compose.ha.yaml

@@ -190,7 +190,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:v0.121.0
+    image: signoz/signoz:v0.121.2
     ports:
       - "8080:8080" # signoz port
     #   - "6060:6060"     # pprof port

deploy/docker-swarm/docker-compose.yaml

@@ -117,7 +117,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:v0.121.0
+    image: signoz/signoz:v0.121.2
     ports:
       - "8080:8080" # signoz port
     volumes:

deploy/docker/docker-compose.ha.yaml

@@ -181,7 +181,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:${VERSION:-v0.121.0}
+    image: signoz/signoz:${VERSION:-v0.121.2}
     container_name: signoz
     ports:
       - "8080:8080" # signoz port

deploy/docker/docker-compose.yaml

@@ -109,7 +109,7 @@ services:
       # - ../common/clickhouse/storage.xml:/etc/clickhouse-server/config.d/storage.xml
   signoz:
     !!merge <<: *db-depend
-    image: signoz/signoz:${VERSION:-v0.121.0}
+    image: signoz/signoz:${VERSION:-v0.121.2}
     container_name: signoz
     ports:
       - "8080:8080" # signoz port

docs/api/openapi.yml

@@ -17273,9 +17273,9 @@ paths:
           description: Internal Server Error
       security:
       - api_key:
-        - ADMIN
+        - VIEWER
       - tokenizer:
-        - ADMIN
+        - VIEWER
       summary: Get host info from Zeus.
       tags:
       - zeus

frontend/src/container/DashboardContainer/visualization/panels/BarPanel/BarPanel.tsx

@@ -14,6 +14,7 @@ import { usePanelContextMenu } from '../../hooks/usePanelContextMenu';
 import { prepareBarPanelConfig, prepareBarPanelData } from './utils';
 
 import '../Panel.styles.scss';
+import get from 'lodash/get';
 
 function BarPanel(props: PanelWrapperProps): JSX.Element {
 	const {
@@ -114,7 +115,7 @@ function BarPanel(props: PanelWrapperProps): JSX.Element {
 	}, []);
 
 	const groupBy = useMemo(() => {
-		return widget.query.builder.queryData[0].groupBy;
+		return get(widget, 'query.builder.queryData[0].groupBy', []);
 	}, [widget.query]);
 
 	return (

frontend/src/container/DashboardContainer/visualization/panels/TimeSeriesPanel/TimeSeriesPanel.tsx

@@ -10,6 +10,7 @@ import { ContextMenu } from 'periscope/components/ContextMenu';
 import { useTimezone } from 'providers/Timezone';
 import uPlot from 'uplot';
 import { getTimeRange } from 'utils/getTimeRange';
+import get from 'lodash/get';
 
 import { prepareChartData, prepareUPlotConfig } from '../TimeSeriesPanel/utils';
 
@@ -105,7 +106,7 @@ function TimeSeriesPanel(props: PanelWrapperProps): JSX.Element {
 	]);
 
 	const groupBy = useMemo(() => {
-		return widget.query.builder.queryData[0].groupBy;
+		return get(widget, 'query.builder.queryData[0].groupBy', []);
 	}, [widget.query]);
 
 	return (

frontend/src/container/MCPServerSettings/AuthCard/AuthCard.test.tsx

@@ -67,4 +67,40 @@ describe('AuthCard', () => {
 
 		expect(mockOnCreateServiceAccount).toHaveBeenCalledTimes(1);
 	});
+
+	it('shows URL for non-admin (all roles can fetch instance URL)', () => {
+		render(<AuthCard {...defaultProps} isAdmin={false} />);
+
+		expect(screen.getByTestId('mcp-instance-url')).toHaveTextContent(
+			'http://localhost',
+		);
+	});
+
+	describe('isLoadingInstanceUrl', () => {
+		it('shows a skeleton and hides the URL while loading', () => {
+			render(<AuthCard {...defaultProps} isAdmin isLoadingInstanceUrl />);
+
+			expect(screen.queryByTestId('mcp-instance-url')).not.toBeInTheDocument();
+			expect(document.querySelector('.ant-skeleton-input')).toBeInTheDocument();
+		});
+
+		it('does not render the copy button while loading', () => {
+			render(<AuthCard {...defaultProps} isAdmin isLoadingInstanceUrl />);
+
+			expect(
+				screen.queryByRole('button', { name: 'Copy SigNoz instance URL' }),
+			).not.toBeInTheDocument();
+		});
+
+		it('shows the URL and copy button once loading is done', () => {
+			render(<AuthCard {...defaultProps} isAdmin isLoadingInstanceUrl={false} />);
+
+			expect(screen.getByTestId('mcp-instance-url')).toHaveTextContent(
+				'http://localhost',
+			);
+			expect(
+				screen.getByRole('button', { name: 'Copy SigNoz instance URL' }),
+			).toBeInTheDocument();
+		});
+	});
 });

frontend/src/container/MCPServerSettings/AuthCard/AuthCard.tsx

@@ -1,3 +1,4 @@
+import { Skeleton } from 'antd';
 import { Badge, Button } from '@signozhq/ui';
 import { Info, KeyRound } from '@signozhq/icons';
 import CopyIconButton from '../CopyIconButton';
@@ -7,6 +8,7 @@ import './AuthCard.styles.scss';
 interface AuthCardProps {
 	isAdmin: boolean;
 	instanceUrl: string;
+	isLoadingInstanceUrl?: boolean;
 	onCopyInstanceUrl: () => void;
 	onCreateServiceAccount: () => void;
 }
@@ -14,6 +16,7 @@ interface AuthCardProps {
 function AuthCard({
 	isAdmin,
 	instanceUrl,
+	isLoadingInstanceUrl = false,
 	onCopyInstanceUrl,
 	onCreateServiceAccount,
 }: AuthCardProps): JSX.Element {
@@ -32,13 +35,18 @@ function AuthCard({
 
 			<div className="mcp-auth-card__field">
 				<span className="mcp-auth-card__field-label">SigNoz Instance URL</span>
-				<div className="mcp-auth-card__endpoint-value">
-					<span data-testid="mcp-instance-url">{instanceUrl}</span>
-					<CopyIconButton
-						ariaLabel="Copy SigNoz instance URL"
-						onCopy={onCopyInstanceUrl}
-					/>
-				</div>
+				{isLoadingInstanceUrl ? (
+					<Skeleton.Input active size="small" />
+				) : (
+					<div className="mcp-auth-card__endpoint-value">
+						<span data-testid="mcp-instance-url">{instanceUrl}</span>
+						<CopyIconButton
+							ariaLabel="Copy SigNoz instance URL"
+							onCopy={onCopyInstanceUrl}
+							disabled={isLoadingInstanceUrl}
+						/>
+					</div>
+				)}
 			</div>
 
 			<div className="mcp-auth-card__field">

frontend/src/container/MCPServerSettings/MCPServerSettings.test.tsx

@@ -6,6 +6,8 @@ const mockLogEvent = jest.fn();
 const mockCopyToClipboard = jest.fn();
 const mockHistoryPush = jest.fn();
 const mockUseGetGlobalConfig = jest.fn();
+const mockUseGetHosts = jest.fn();
+const mockUseGetTenantLicense = jest.fn();
 const mockToastSuccess = jest.fn();
 const mockToastWarning = jest.fn();
 
@@ -19,6 +21,14 @@ jest.mock('api/generated/services/global', () => ({
 		mockUseGetGlobalConfig(...args),
 }));
 
+jest.mock('api/generated/services/zeus', () => ({
+	useGetHosts: (...args: unknown[]): unknown => mockUseGetHosts(...args),
+}));
+
+jest.mock('hooks/useGetTenantLicense', () => ({
+	useGetTenantLicense: (): unknown => mockUseGetTenantLicense(),
+}));
+
 jest.mock('react-use', () => ({
 	__esModule: true,
 	useCopyToClipboard: (): [unknown, jest.Mock] => [null, mockCopyToClipboard],
@@ -47,6 +57,23 @@ jest.mock('utils/basePath', () => ({
 }));
 
 const MCP_URL = 'https://mcp.us.signoz.cloud/mcp';
+const CUSTOM_HOST_URL = 'https://myteam.signoz.cloud';
+const DEFAULT_HOST_URL = 'https://default.signoz.cloud';
+
+function setupLicense({
+	isCloudUser = true,
+	isEnterpriseSelfHostedUser = false,
+}: {
+	isCloudUser?: boolean;
+	isEnterpriseSelfHostedUser?: boolean;
+} = {}): void {
+	mockUseGetTenantLicense.mockReturnValue({
+		isCloudUser,
+		isEnterpriseSelfHostedUser,
+		isCommunityUser: !isCloudUser && !isEnterpriseSelfHostedUser,
+		isCommunityEnterpriseUser: false,
+	});
+}
 
 function setupGlobalConfig({ mcpUrl }: { mcpUrl: string | null }): void {
 	mockUseGetGlobalConfig.mockReturnValue({
@@ -55,7 +82,29 @@ function setupGlobalConfig({ mcpUrl }: { mcpUrl: string | null }): void {
 	});
 }
 
+function setupHosts({
+	hosts = [],
+	isLoading = false,
+	isError = false,
+}: {
+	hosts?: { name?: string; url?: string; is_default?: boolean }[];
+	isLoading?: boolean;
+	isError?: boolean;
+} = {}): void {
+	mockUseGetHosts.mockReturnValue({
+		data: isLoading || isError ? undefined : { data: { hosts } },
+		isLoading,
+		isError,
+	});
+}
+
 describe('MCPServerSettings', () => {
+	beforeEach(() => {
+		// Default: cloud user, hosts loaded but empty → instanceUrl falls back to getBaseUrl()
+		setupLicense();
+		setupHosts();
+	});
+
 	afterEach(() => {
 		jest.clearAllMocks();
 	});
@@ -158,4 +207,145 @@ describe('MCPServerSettings', () => {
 			'Instance URL copied to clipboard',
 		);
 	});
+
+	describe('instance URL resolution', () => {
+		it('uses the active custom host URL when available', async () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupHosts({
+				hosts: [
+					{ name: 'default', url: DEFAULT_HOST_URL, is_default: true },
+					{ name: 'myteam', url: CUSTOM_HOST_URL, is_default: false },
+				],
+			});
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(<MCPServerSettings />);
+
+			expect(screen.getByTestId('mcp-instance-url')).toHaveTextContent(
+				CUSTOM_HOST_URL,
+			);
+
+			await user.click(
+				screen.getByRole('button', { name: 'Copy SigNoz instance URL' }),
+			);
+
+			expect(mockCopyToClipboard).toHaveBeenCalledWith(CUSTOM_HOST_URL);
+		});
+
+		it('falls back to the default host URL when no custom host exists', async () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupHosts({
+				hosts: [{ name: 'default', url: DEFAULT_HOST_URL, is_default: true }],
+			});
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(<MCPServerSettings />);
+
+			expect(screen.getByTestId('mcp-instance-url')).toHaveTextContent(
+				DEFAULT_HOST_URL,
+			);
+
+			await user.click(
+				screen.getByRole('button', { name: 'Copy SigNoz instance URL' }),
+			);
+
+			expect(mockCopyToClipboard).toHaveBeenCalledWith(DEFAULT_HOST_URL);
+		});
+
+		it('falls back to browser URL when hosts request errors', async () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupHosts({ isError: true });
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(<MCPServerSettings />);
+
+			await user.click(
+				screen.getByRole('button', { name: 'Copy SigNoz instance URL' }),
+			);
+
+			expect(mockCopyToClipboard).toHaveBeenCalledWith('http://localhost');
+		});
+
+		it('shows URL skeleton while hosts are loading', () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupHosts({ isLoading: true });
+
+			render(<MCPServerSettings />);
+
+			expect(screen.queryByTestId('mcp-instance-url')).not.toBeInTheDocument();
+			expect(document.querySelector('.ant-skeleton-input')).toBeInTheDocument();
+		});
+
+		it('does not copy while hosts are still loading', async () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupHosts({ isLoading: true });
+			userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(<MCPServerSettings />);
+
+			expect(
+				screen.queryByRole('button', { name: 'Copy SigNoz instance URL' }),
+			).not.toBeInTheDocument();
+			expect(mockCopyToClipboard).not.toHaveBeenCalled();
+		});
+
+		it('disables the hosts query for non-cloud deployments', () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupLicense({ isCloudUser: false, isEnterpriseSelfHostedUser: true });
+
+			render(<MCPServerSettings />, undefined, { role: 'ADMIN' });
+
+			const callOptions = mockUseGetHosts.mock.calls[0]?.[0];
+			expect(callOptions?.query?.enabled).toBe(false);
+		});
+
+		it('uses browser URL immediately for enterprise self-hosted (no skeleton)', async () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupLicense({ isCloudUser: false, isEnterpriseSelfHostedUser: true });
+			setupHosts({ isLoading: false });
+			const user = userEvent.setup({ pointerEventsCheck: 0 });
+
+			render(<MCPServerSettings />, undefined, { role: 'ADMIN' });
+
+			expect(
+				document.querySelector('.ant-skeleton-input'),
+			).not.toBeInTheDocument();
+			expect(screen.getByTestId('mcp-instance-url')).toHaveTextContent(
+				'http://localhost',
+			);
+
+			await user.click(
+				screen.getByRole('button', { name: 'Copy SigNoz instance URL' }),
+			);
+
+			expect(mockCopyToClipboard).toHaveBeenCalledWith('http://localhost');
+		});
+
+		it('enables the hosts query for all cloud users including viewers', () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupLicense({ isCloudUser: true });
+
+			render(<MCPServerSettings />, undefined, { role: 'VIEWER' });
+
+			const callOptions = mockUseGetHosts.mock.calls[0]?.[0];
+			expect(callOptions?.query?.enabled).toBe(true);
+		});
+
+		it('shows instance URL for cloud viewer', () => {
+			setupGlobalConfig({ mcpUrl: MCP_URL });
+			setupLicense({ isCloudUser: true });
+			setupHosts({
+				hosts: [{ name: 'default', url: DEFAULT_HOST_URL, is_default: true }],
+			});
+
+			render(<MCPServerSettings />, undefined, { role: 'VIEWER' });
+
+			expect(
+				document.querySelector('.ant-skeleton-input'),
+			).not.toBeInTheDocument();
+			expect(screen.getByTestId('mcp-instance-url')).toHaveTextContent(
+				DEFAULT_HOST_URL,
+			);
+		});
+	});
 });

frontend/src/container/MCPServerSettings/MCPServerSettings.tsx

@@ -1,11 +1,13 @@
-import { useCallback, useEffect, useState } from 'react';
+import { useCallback, useEffect, useMemo, useState } from 'react';
 import { useCopyToClipboard } from 'react-use';
 import logEvent from 'api/common/logEvent';
 import ROUTES from 'constants/routes';
 import { SA_QUERY_PARAMS } from 'container/ServiceAccountsSettings/constants';
 import { useGetGlobalConfig } from 'api/generated/services/global';
+import { useGetHosts } from 'api/generated/services/zeus';
 import history from 'lib/history';
 import { useAppContext } from 'providers/App/App';
+import { useGetTenantLicense } from 'hooks/useGetTenantLicense';
 import { USER_ROLES } from 'types/roles';
 import { getBaseUrl } from 'utils/basePath';
 
@@ -34,7 +36,23 @@ function MCPServerSettings(): JSX.Element {
 	const [, copyToClipboard] = useCopyToClipboard();
 
 	const isAdmin = user.role === USER_ROLES.ADMIN;
-	const instanceUrl = getBaseUrl();
+	const { isCloudUser } = useGetTenantLicense();
+
+	const {
+		data: hostsData,
+		isLoading: isLoadingHosts,
+		isError: isHostsError,
+	} = useGetHosts({ query: { enabled: isCloudUser } });
+
+	const instanceUrl = useMemo(() => {
+		if (isLoadingHosts || isHostsError || !hostsData) {
+			return getBaseUrl();
+		}
+		const hosts = hostsData.data?.hosts ?? [];
+		const activeHost =
+			hosts.find((h) => !h.is_default) ?? hosts.find((h) => h.is_default);
+		return activeHost?.url ?? getBaseUrl();
+	}, [hostsData, isLoadingHosts, isHostsError]);
 
 	const { data: globalConfig, isLoading: isConfigLoading } =
 		useGetGlobalConfig();
@@ -70,10 +88,13 @@ function MCPServerSettings(): JSX.Element {
 	}, []);
 
 	const handleCopyInstanceUrl = useCallback(() => {
+		if (isLoadingHosts) {
+			return;
+		}
 		copyToClipboard(instanceUrl);
 		toast.success('Instance URL copied to clipboard');
 		void logEvent(ANALYTICS.INSTANCE_URL_COPIED, {});
-	}, [copyToClipboard, instanceUrl]);
+	}, [copyToClipboard, instanceUrl, isLoadingHosts]);
 
 	const handleDocsLinkClick = useCallback((target: string) => {
 		void logEvent(ANALYTICS.DOCS_LINK_CLICKED, { target });
@@ -132,6 +153,7 @@ function MCPServerSettings(): JSX.Element {
 			<AuthCard
 				isAdmin={isAdmin}
 				instanceUrl={instanceUrl}
+				isLoadingInstanceUrl={isLoadingHosts}
 				onCopyInstanceUrl={handleCopyInstanceUrl}
 				onCreateServiceAccount={handleCreateServiceAccount}
 			/>

frontend/src/pages/Settings/Settings.tsx

@@ -36,6 +36,7 @@ function SettingsPage(): JSX.Element {
 
 	const isAdmin = user.role === USER_ROLES.ADMIN;
 	const isEditor = user.role === USER_ROLES.EDITOR;
+	const isViewer = user.role === USER_ROLES.VIEWER;
 
 	const isWorkspaceBlocked = trialInfo?.workSpaceBlock || false;
 
@@ -102,6 +103,13 @@ function SettingsPage(): JSX.Element {
 								: item.isEnabled,
 					}));
 				}
+
+				if (isViewer) {
+					updatedItems = updatedItems.map((item) => ({
+						...item,
+						isEnabled: item.key === ROUTES.MCP_SERVER ? true : item.isEnabled,
+					}));
+				}
 			}
 
 			if (isEnterpriseSelfHostedUser) {
@@ -134,6 +142,13 @@ function SettingsPage(): JSX.Element {
 								: item.isEnabled,
 					}));
 				}
+
+				if (isViewer) {
+					updatedItems = updatedItems.map((item) => ({
+						...item,
+						isEnabled: item.key === ROUTES.MCP_SERVER ? true : item.isEnabled,
+					}));
+				}
 			}
 
 			if (!isCloudUser && !isEnterpriseSelfHostedUser) {
@@ -166,6 +181,7 @@ function SettingsPage(): JSX.Element {
 	}, [
 		isAdmin,
 		isEditor,
+		isViewer,
 		isCloudUser,
 		isEnterpriseSelfHostedUser,
 		isFetchingActiveLicense,

frontend/src/pages/Settings/__tests__/Settings.test.tsx

@@ -82,12 +82,13 @@ describe('SettingsPage nav sections', () => {
 			expect(screen.getByTestId(id)).toBeInTheDocument();
 		});
 
-		it.each(['billing', 'roles', 'mcp-server'])(
-			'does not render "%s" element',
-			(id) => {
-				expect(screen.queryByTestId(id)).not.toBeInTheDocument();
-			},
-		);
+		it.each(['billing', 'roles'])('does not render "%s" element', (id) => {
+			expect(screen.queryByTestId(id)).not.toBeInTheDocument();
+		});
+
+		it('renders "mcp-server" element', () => {
+			expect(screen.getByTestId('mcp-server')).toBeInTheDocument();
+		});
 	});
 
 	describe('Self-hosted Admin', () => {

pkg/apiserver/signozapiserver/zeus.go

@@ -27,7 +27,7 @@ func (provider *provider) addZeusRoutes(router *mux.Router) error {
 		return err
 	}
 
-	if err := router.Handle("/api/v2/zeus/hosts", handler.New(provider.authZ.AdminAccess(provider.zeusHandler.GetHosts), handler.OpenAPIDef{
+	if err := router.Handle("/api/v2/zeus/hosts", handler.New(provider.authZ.ViewAccess(provider.zeusHandler.GetHosts), handler.OpenAPIDef{
 		ID:                  "GetHosts",
 		Tags:                []string{"zeus"},
 		Summary:             "Get host info from Zeus.",
@@ -39,7 +39,7 @@ func (provider *provider) addZeusRoutes(router *mux.Router) error {
 		SuccessStatusCode:   http.StatusOK,
 		ErrorStatusCodes:    []int{http.StatusBadRequest, http.StatusUnauthorized, http.StatusForbidden, http.StatusNotFound},
 		Deprecated:          false,
-		SecuritySchemes:     newSecuritySchemes(types.RoleAdmin),
+		SecuritySchemes:     newSecuritySchemes(types.RoleViewer),
 	})).Methods(http.MethodGet).GetError(); err != nil {
 		return err
 	}