test(useSafeNavigate): move helpers to add testing

UpdatableRole.UnmarshalJSON unmarshalled transactionGroups directly into
the slice, bypassing the verb/resource/kind/selector validation that
CreateRole applies via NewTransactionGroups. Parse the field through
NewTransactionGroups so update enforces the same constraints, while
keeping transactionGroups required (omitted/null still rejected).

frontend/src/components/CeleryTask/useNavigateToExplorer.ts

@@ -6,6 +6,10 @@ import { PANEL_TYPES } from 'constants/queryBuilder';
 import ROUTES from 'constants/routes';
 import useUpdatedQuery from 'container/GridCardLayout/useResolveQuery';
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { useNotifications } from 'hooks/useNotifications';
 import { useDashboardStore } from 'providers/Dashboard/store/useDashboardStore';
 import { AppState } from 'store/reducers';
@@ -124,15 +128,13 @@ export function useNavigateToExplorer(): (
 					});
 			}
 
-			const JSONCompositeQuery = encodeURIComponent(JSON.stringify(preparedQuery));
+			applySerializedParams(serialize(preparedQuery), urlParams);
 
 			const basePath =
 				dataSource === DataSource.TRACES
 					? ROUTES.TRACES_EXPLORER
 					: ROUTES.LOGS_EXPLORER;
-			const newExplorerPath = `${basePath}?${urlParams.toString()}&${
-				QueryParams.compositeQuery
-			}=${JSONCompositeQuery}`;
+			const newExplorerPath = `${basePath}?${urlParams.toString()}`;
 
 			window.open(withBasePath(newExplorerPath), sameTab ? '_self' : '_blank');
 		},

frontend/src/components/LogDetail/index.tsx

@@ -32,6 +32,7 @@ import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import { useIsDarkMode } from 'hooks/useDarkMode';
 import { useNotifications } from 'hooks/useNotifications';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
+import { serializeToParams } from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import { cloneDeep } from 'lodash-es';
 import {
@@ -252,7 +253,7 @@ function LogDetailInner({
 			[QueryParams.activeLogId]: `"${log?.id}"`,
 			[QueryParams.startTime]: minTime?.toString() || '',
 			[QueryParams.endTime]: maxTime?.toString() || '',
-			[QueryParams.compositeQuery]: JSON.stringify(
+			...serializeToParams(
 				updateAllQueriesOperators(
 					initialQueriesMap[DataSource.LOGS],
 					PANEL_TYPES.LIST,

frontend/src/constants/query.ts

@@ -18,7 +18,6 @@ export enum QueryParams {
 	q = 'q',
 	activeLogId = 'activeLogId',
 	timeRange = 'timeRange',
-	compositeQuery = 'compositeQuery',
 	panelTypes = 'panelTypes',
 	pageSize = 'pageSize',
 	viewMode = 'viewMode',

frontend/src/container/AIAssistant/__tests__/getAutoContexts.test.ts

@@ -1,5 +1,7 @@
 import { QueryParams } from 'constants/query';
 import ROUTES from 'constants/routes';
+import { serialize } from 'lib/compositeQuery/serializer';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
 
 import { getAutoContexts } from '../getAutoContexts';
 
@@ -48,6 +50,48 @@ describe('getAutoContexts', () => {
 		]);
 	});
 
+	it('includes the query in alert edit context', () => {
+		const ruleId = 'rule-edit';
+		const query = { queryType: 'builder', builder: { queryData: [] } };
+		const serializedParams = serialize(query as unknown as Query);
+		const search = `?${QueryParams.ruleId}=${ruleId}&${serializedParams.toString()}`;
+
+		const contexts = getAutoContexts(ROUTES.EDIT_ALERTS, search);
+
+		expect(contexts).toStrictEqual([
+			{
+				source: 'auto',
+				type: 'alert',
+				resourceId: ruleId,
+				metadata: {
+					page: 'alert_edit',
+					ruleId,
+					query,
+				},
+			},
+		]);
+	});
+
+	it('includes the query in alert new context (no ruleId)', () => {
+		const query = { queryType: 'builder', builder: { queryData: [] } };
+		const serializedParams = serialize(query as unknown as Query);
+		const search = `?${serializedParams.toString()}`;
+
+		const contexts = getAutoContexts(ROUTES.ALERTS_NEW, search);
+
+		expect(contexts).toStrictEqual([
+			{
+				source: 'auto',
+				type: 'alert',
+				resourceId: null,
+				metadata: {
+					page: 'alert_new',
+					query,
+				},
+			},
+		]);
+	});
+
 	it('returns triggered alerts context on alert history without ruleId', () => {
 		const contexts = getAutoContexts(ROUTES.ALERT_HISTORY, '');
 
@@ -147,4 +191,24 @@ describe('getAutoContexts', () => {
 			),
 		).toStrictEqual([]);
 	});
+
+	it('decodes the serialized composite query into metadata.query', () => {
+		const query = { builder: { queryData: [] } } as unknown as Query;
+		const search = `?${serialize(query).toString()}`;
+
+		const [context] = getAutoContexts(ROUTES.LOGS_EXPLORER, search);
+
+		expect(context.metadata?.query).toStrictEqual(query);
+	});
+
+	it('omits metadata.query when no serialized query is in the URL', () => {
+		// Detection no longer gates on the `compositeQuery` key — it routes
+		// through `deserialize`/the adapter list — so non-query params (time
+		// range, etc.) must not be mistaken for a query.
+		const search = `?${QueryParams.startTime}=1700000000000&${QueryParams.endTime}=1700003600000`;
+
+		const [context] = getAutoContexts(ROUTES.LOGS_EXPLORER, search);
+
+		expect(context.metadata).not.toHaveProperty('query');
+	});
 });

frontend/src/container/AIAssistant/components/ActionsSection/ActionsSection.tsx

@@ -24,7 +24,7 @@ import {
 	undoExecution,
 } from 'api/ai-assistant/chat';
 import ROUTES from 'constants/routes';
-import { QueryParams } from 'constants/query';
+import { serialize } from 'lib/compositeQuery/serializer';
 import { openInNewTab } from 'utils/navigation';
 import {
 	ArchiveRestore,
@@ -363,8 +363,8 @@ function applyFilter(action: MessageActionDTO, deps: ApplyFilterDeps): void {
 	}
 	// eslint-disable-next-line no-console
 	console.log('[apply_filter] off-page → history.push', base);
-	const encoded = encodeURIComponent(JSON.stringify(normalized));
-	deps.history.push(`${base}?${QueryParams.compositeQuery}=${encoded}`);
+	const params = serialize(normalized);
+	deps.history.push(`${base}?${params.toString()}`);
 }
 
 /** Picks the right rollback API call for a given action kind. */

frontend/src/container/AIAssistant/components/ActionsSection/utils/__tests__/openSavedView.test.ts

@@ -8,6 +8,7 @@ import { getViewById } from 'api/saveView/getViewById';
 import ROUTES from 'constants/routes';
 import { QueryParams } from 'constants/query';
 import { PANEL_TYPES } from 'constants/queryBuilder';
+import { deserialize } from 'lib/compositeQuery/serializer';
 import { ICompositeMetricQuery } from 'types/api/alerts/compositeQuery';
 import { AllViewsProps, ViewProps } from 'types/api/saveViews/types';
 import { DataSource } from 'types/common/queryBuilder';
@@ -218,7 +219,9 @@ describe('buildExplorerNavigationUrl', () => {
 		);
 
 		expect(url).toContain(ROUTES.LOGS_EXPLORER);
-		expect(url).toContain(`${QueryParams.compositeQuery}=`);
+
+		const params = new URLSearchParams(new URL(url, 'http://x').search);
+		expect(deserialize(params)).not.toBeNull();
 		expect(url).toContain(`${QueryParams.viewKey}=`);
 	});
 });

frontend/src/container/AIAssistant/components/ActionsSection/utils/openSavedView.ts

@@ -2,6 +2,10 @@ import { getAllViews } from 'api/saveView/getAllViews';
 import { getViewById } from 'api/saveView/getViewById';
 import { QueryParams } from 'constants/query';
 import { PANEL_TYPES } from 'constants/queryBuilder';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { mapQueryDataFromApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataFromApi';
 import { SOURCEPAGE_VS_ROUTES } from 'pages/SaveView/constants';
 import { ViewProps } from 'types/api/saveViews/types';
@@ -75,10 +79,7 @@ export function buildExplorerNavigationUrl(
 	searchParams: Record<string, unknown>,
 ): string {
 	const params = new URLSearchParams();
-	params.set(
-		QueryParams.compositeQuery,
-		encodeURIComponent(JSON.stringify(query)),
-	);
+	applySerializedParams(serialize(query), params);
 	Object.entries(searchParams).forEach(([key, value]) => {
 		params.set(key, JSON.stringify(value));
 	});

frontend/src/container/AIAssistant/getAutoContexts.ts

@@ -1,6 +1,7 @@
 import type { MessageContext } from 'api/ai-assistant/chat';
 import { QueryParams } from 'constants/query';
 import ROUTES from 'constants/routes';
+import { deserialize } from 'lib/compositeQuery/serializer';
 import { AlertListTabs } from 'pages/AlertList/types';
 import { matchPath } from 'react-router-dom';
 
@@ -124,7 +125,9 @@ export function getAutoContexts(
 		}
 	}
 
-	// Alert edit — `/alerts/edit?ruleId=…`.
+	// Alert edit — `/alerts/edit?ruleId=…`. The form syncs its query-builder
+	// state to the URL (`useShareBuilderUrl`), so shared metadata carries the
+	// alert's query + time range, mirroring the dashboard panel editor.
 	if (matchPath(pathname, { path: ROUTES.EDIT_ALERTS, exact: true })) {
 		const ruleId = params.get(QueryParams.ruleId);
 		if (ruleId) {
@@ -133,19 +136,21 @@ export function getAutoContexts(
 					source: 'auto',
 					type: 'alert',
 					resourceId: ruleId,
-					metadata: { page: 'alert_edit', ruleId },
+					metadata: { page: 'alert_edit', ruleId, ...sharedMetadata },
 				},
 			];
 		}
 	}
 
+	// Alert new — `/alerts/new`. No rule id yet (draft), but the query-builder
+	// state is on the URL, so shared metadata carries the in-progress query.
 	if (matchPath(pathname, { path: ROUTES.ALERTS_NEW, exact: true })) {
 		return [
 			{
 				source: 'auto',
 				type: 'alert',
 				resourceId: null,
-				metadata: { page: 'alert_new' },
+				metadata: { page: 'alert_new', ...sharedMetadata },
 			},
 		];
 	}
@@ -339,15 +344,9 @@ function collectSharedMetadata(
 		out.timeRange = { start: startTime, end: endTime };
 	}
 
-	// Query Builder state — URL-encoded JSON written by `QueryBuilderProvider`.
-	const compositeQueryRaw = params.get(QueryParams.compositeQuery);
-	if (compositeQueryRaw) {
-		try {
-			out.query = JSON.parse(decodeURIComponent(compositeQueryRaw));
-		} catch {
-			// Malformed JSON in the URL — drop silently rather than throw
-			// inside a context-collection helper.
-		}
+	const decodedQuery = deserialize(params);
+	if (decodedQuery) {
+		out.query = decodedQuery;
 	}
 
 	// Saved view selectors (logs / traces explorer) and dashboard variables.

frontend/src/container/AllAlertChannels/__tests__/EditAlertChannel.test.tsx

@@ -26,7 +26,12 @@ jest.mock('components/MarkdownRenderer/MarkdownRenderer', () => ({
 
 describe('Should check if the edit alert channel is properly displayed', () => {
 	beforeEach(() => {
-		render(<EditAlertChannels initialValue={editAlertChannelInitialValue} />);
+		render(
+			<EditAlertChannels
+				channelId="3"
+				initialValue={editAlertChannelInitialValue}
+			/>,
+		);
 	});
 	afterEach(() => {
 		jest.clearAllMocks();

frontend/src/container/AllAlertChannels/__tests__/EditAlertChannelSave.test.tsx

@@ -0,0 +1,81 @@
+import EditAlertChannels from 'container/EditAlertChannels';
+import { editAlertChannelInitialValue } from 'mocks-server/__mockdata__/alerts';
+import { server } from 'mocks-server/server';
+import { rest } from 'msw';
+import { render, screen, userEvent, waitFor } from 'tests/test-utils';
+
+jest.mock('hooks/useNotifications', () => ({
+	__esModule: true,
+	useNotifications: jest.fn(() => ({
+		notifications: { success: jest.fn(), error: jest.fn() },
+	})),
+}));
+
+jest.mock('components/MarkdownRenderer/MarkdownRenderer', () => ({
+	MarkdownRenderer: jest.fn(() => <div>Mocked MarkdownRenderer</div>),
+}));
+
+interface EditRequest {
+	id: string;
+	body: { name: string; slack_configs: { send_resolved: boolean }[] };
+}
+
+// Captures the PUT /channels/:id request the edit form fires, so assertions can
+// run against the real HTTP payload instead of a hand-mocked api client.
+function mockEditChannel(): { calls: EditRequest[] } {
+	const result: { calls: EditRequest[] } = { calls: [] };
+	server.use(
+		rest.put('http://localhost/api/v1/channels/:id', async (req, res, ctx) => {
+			result.calls.push({
+				id: req.params.id as string,
+				body: await req.json(),
+			});
+			return res(
+				ctx.status(200),
+				ctx.json({ status: 'success', data: 'channel updated' }),
+			);
+		}),
+	);
+	return result;
+}
+
+describe('EditAlertChannels save', () => {
+	afterEach(() => jest.clearAllMocks());
+
+	it('sends the channelId in the edit request (regression: empty id)', async () => {
+		const edit = mockEditChannel();
+		render(
+			<EditAlertChannels
+				channelId="3"
+				initialValue={editAlertChannelInitialValue}
+			/>,
+		);
+
+		const user = userEvent.setup();
+		await user.click(screen.getByTestId('save-channel-button'));
+
+		await waitFor(() => expect(edit.calls).toHaveLength(1));
+		expect(edit.calls[0].id).toBe('3');
+	});
+
+	it('persists send_resolved toggle in the edit request', async () => {
+		const edit = mockEditChannel();
+		render(
+			<EditAlertChannels
+				channelId="3"
+				initialValue={editAlertChannelInitialValue}
+			/>,
+		);
+
+		const user = userEvent.setup();
+		const sendResolved = screen.getByTestId('field-send-resolved-checkbox');
+		expect(sendResolved).toBeChecked();
+
+		await user.click(sendResolved);
+		await user.click(screen.getByTestId('save-channel-button'));
+
+		await waitFor(() => expect(edit.calls).toHaveLength(1));
+		expect(edit.calls[0].id).toBe('3');
+		expect(edit.calls[0].body.slack_configs[0].send_resolved).toBe(false);
+	});
+});

frontend/src/container/DashboardContainer/PanelTypeSelectionModal/index.tsx

@@ -2,8 +2,8 @@ import { memo } from 'react';
 import { Card, Modal } from 'antd';
 import { Typography } from '@signozhq/ui/typography';
 import logEvent from 'api/common/logEvent';
-import { QueryParams } from 'constants/query';
 import { PANEL_TYPES, PANEL_TYPES_INITIAL_QUERY } from 'constants/queryBuilder';
+import { serializeToParams } from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import history from 'lib/history';
 import { usePanelTypeSelectionModalStore } from 'providers/Dashboard/helpers/panelTypeSelectionModalHelper';
@@ -28,9 +28,7 @@ function PanelTypeSelectionModal(): JSX.Element {
 		const queryParams = {
 			graphType: name,
 			widgetId: id,
-			[QueryParams.compositeQuery]: JSON.stringify(
-				PANEL_TYPES_INITIAL_QUERY[name],
-			),
+			...serializeToParams(PANEL_TYPES_INITIAL_QUERY[name]),
 		};
 
 		history.push(

frontend/src/container/EditAlertChannels/index.tsx

@@ -32,6 +32,7 @@ import APIError from 'types/api/error';
 
 function EditAlertChannels({
 	initialValue,
+	channelId: id,
 }: EditAlertChannelsProps): JSX.Element {
 	// init namespace for translations
 	const { t } = useTranslation('channels');
@@ -53,11 +54,6 @@ function EditAlertChannels({
 	const [testingState, setTestingState] = useState<boolean>(false);
 	const { notifications } = useNotifications();
 
-	// Extract channelId from URL pathname since useParams doesn't work in nested routing
-	const { pathname } = window.location;
-	const channelIdMatch = pathname.match(/\/settings\/channels\/edit\/([^/]+)/);
-	const id = channelIdMatch ? channelIdMatch[1] : '';
-
 	const [type, setType] = useState<ChannelType>(
 		initialValue?.type ? (initialValue.type as ChannelType) : ChannelType.Slack,
 	);
@@ -520,6 +516,7 @@ interface EditAlertChannelsProps {
 	initialValue: {
 		[x: string]: unknown;
 	};
+	channelId: string;
 }
 
 export default EditAlertChannels;

frontend/src/container/ExplorerOptions/ExplorerOptions.tsx

@@ -62,6 +62,8 @@ import { useIsDarkMode } from 'hooks/useDarkMode';
 import useErrorNotification from 'hooks/useErrorNotification';
 import { useHandleExplorerTabChange } from 'hooks/useHandleExplorerTabChange';
 import { useNotifications } from 'hooks/useNotifications';
+import { serializeToParams } from 'lib/compositeQuery/serializer';
+import createQueryParams from 'lib/createQueryParams';
 import { mapCompositeQueryFromQuery } from 'lib/newQueryBuilder/queryBuilderMappers/mapCompositeQueryFromQuery';
 import { cloneDeep, isEqual, omit } from 'lodash-es';
 import { useAppContext } from 'providers/App/App';
@@ -174,7 +176,7 @@ function ExplorerOptions({
 
 	const handleConditionalQueryModification = useCallback(
 		// eslint-disable-next-line sonarjs/cognitive-complexity
-		(defaultQuery: Query | null): string => {
+		(defaultQuery: Query | null): Record<string, string> => {
 			const queryToUse = defaultQuery || query;
 			if (!queryToUse) {
 				throw new Error('No query provided');
@@ -184,7 +186,7 @@ function ExplorerOptions({
 					StringOperators.NOOP &&
 				sourcepage !== DataSource.LOGS
 			) {
-				return JSON.stringify(queryToUse);
+				return serializeToParams(queryToUse);
 			}
 
 			// Convert NOOP to COUNT for alerts and strip orderBy for logs
@@ -208,14 +210,7 @@ function ExplorerOptions({
 				);
 			}
 
-			try {
-				return JSON.stringify(modifiedQuery);
-			} catch (err) {
-				throw new Error(
-					'Failed to stringify modified query: ' +
-						(err instanceof Error ? err.message : String(err)),
-				);
-			}
+			return serializeToParams(modifiedQuery);
 		},
 		[panelType, query, sourcepage],
 	);
@@ -238,13 +233,9 @@ function ExplorerOptions({
 				});
 			}
 
-			const stringifiedQuery = handleConditionalQueryModification(defaultQuery);
+			const serializedParams = handleConditionalQueryModification(defaultQuery);
 
-			history.push(
-				`${ROUTES.ALERTS_NEW}?${QueryParams.compositeQuery}=${encodeURIComponent(
-					stringifiedQuery,
-				)}`,
-			);
+			history.push(`${ROUTES.ALERTS_NEW}?${createQueryParams(serializedParams)}`);
 		},
 		// eslint-disable-next-line react-hooks/exhaustive-deps
 		[handleConditionalQueryModification, history],

frontend/src/container/FormAlertChannels/index.tsx

@@ -136,6 +136,7 @@ function FormAlertChannels({
 
 				<Form.Item>
 					<Button
+						data-testid="save-channel-button"
 						disabled={savingState}
 						loading={savingState}
 						type="primary"
@@ -144,6 +145,7 @@ function FormAlertChannels({
 						{t('button_save_channel')}
 					</Button>
 					<Button
+						data-testid="test-channel-button"
 						disabled={testingState}
 						loading={testingState}
 						onClick={(): void => onTestHandler(type)}
@@ -151,6 +153,7 @@ function FormAlertChannels({
 						{t('button_test_channel')}
 					</Button>
 					<Button
+						data-testid="return-button"
 						onClick={(): void => {
 							history.replace(ROUTES.ALL_CHANNELS);
 						}}

frontend/src/container/FormAlertRules/index.tsx

@@ -34,6 +34,7 @@ import useGetYAxisUnit from 'hooks/useGetYAxisUnit';
 import { useNotifications } from 'hooks/useNotifications';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
+import { clearSerializedParams } from 'lib/compositeQuery/serializer';
 import { mapQueryDataFromApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataFromApi';
 import { mapQueryDataToApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataToApi';
 import { isEmpty, isEqual } from 'lodash-es';
@@ -384,7 +385,7 @@ function FormAlertRules({
 
 	const onCancelHandler = useCallback(
 		(e?: React.MouseEvent) => {
-			urlQuery.delete(QueryParams.compositeQuery);
+			clearSerializedParams(urlQuery);
 			urlQuery.delete(QueryParams.panelTypes);
 			urlQuery.delete(QueryParams.ruleId);
 			urlQuery.delete(QueryParams.relativeTime);
@@ -610,7 +611,7 @@ function FormAlertRules({
 				`${ruleId}`,
 			]);
 
-			urlQuery.delete(QueryParams.compositeQuery);
+			clearSerializedParams(urlQuery);
 			urlQuery.delete(QueryParams.panelTypes);
 			urlQuery.delete(QueryParams.ruleId);
 			urlQuery.delete(QueryParams.relativeTime);

frontend/src/container/GridCardLayout/GridCard/WidgetGraphComponent.tsx

@@ -23,6 +23,10 @@ import { useUpdateDashboard } from 'hooks/dashboard/useUpdateDashboard';
 import { useNotifications } from 'hooks/useNotifications';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
+import {
+	clearSerializedParams,
+	serializeToParams,
+} from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import { RowData } from 'lib/query/createTableColumnsFromQuery';
 import {
@@ -212,9 +216,7 @@ function WidgetGraphComponent({
 						[QueryParams.graphType]: clonedWidget?.panelTypes,
 						[QueryParams.widgetId]: uuid,
 						...(clonedWidget?.query && {
-							[QueryParams.compositeQuery]: encodeURIComponent(
-								JSON.stringify(clonedWidget.query),
-							),
+							...serializeToParams(clonedWidget.query),
 						}),
 					};
 					safeNavigate(`${pathname}/new?${createQueryParams(queryParams)}`);
@@ -255,7 +257,7 @@ function WidgetGraphComponent({
 	const onToggleModelHandler = (): void => {
 		const existingSearchParams = new URLSearchParams(search);
 		existingSearchParams.delete(QueryParams.expandedWidgetId);
-		existingSearchParams.delete(QueryParams.compositeQuery);
+		clearSerializedParams(existingSearchParams);
 		existingSearchParams.delete(QueryParams.graphType);
 		const updatedQueryParams = Object.fromEntries(existingSearchParams.entries());
 		if (queryResponse.data?.payload) {

frontend/src/container/GridCardLayout/WidgetHeader/index.tsx

@@ -29,6 +29,10 @@ import useCreateAlerts from 'hooks/queryBuilder/useCreateAlerts';
 import useComponentPermission from 'hooks/useComponentPermission';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { RowData } from 'lib/query/createTableColumnsFromQuery';
 import { isEmpty } from 'lodash-es';
 import { unparse } from 'papaparse';
@@ -86,10 +90,7 @@ function WidgetHeader({
 		const widgetId = widget.id;
 		urlQuery.set(QueryParams.widgetId, widgetId);
 		urlQuery.set(QueryParams.graphType, widget.panelTypes);
-		urlQuery.set(
-			QueryParams.compositeQuery,
-			encodeURIComponent(JSON.stringify(widget.query)),
-		);
+		applySerializedParams(serialize(widget.query), urlQuery);
 		const generatedUrl = buildAbsolutePath({
 			relativePath: 'new',
 			urlQueryString: urlQuery.toString(),

frontend/src/container/Home/AlertRules/AlertRules.tsx

@@ -7,6 +7,10 @@ import { useListRules } from 'api/generated/services/rules';
 import type { RuletypesRuleDTO } from 'api/generated/services/sigNoz.schemas';
 import { QueryParams } from 'constants/query';
 import ROUTES from 'constants/routes';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import history from 'lib/history';
 import { mapQueryDataFromApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataFromApi';
 import { ArrowRight, ArrowUpRight, Plus } from '@signozhq/icons';
@@ -134,10 +138,7 @@ export default function AlertRules({
 		const compositeQuery = mapQueryDataFromApi(
 			toCompositeMetricQuery(record.condition.compositeQuery),
 		);
-		params.set(
-			QueryParams.compositeQuery,
-			encodeURIComponent(JSON.stringify(compositeQuery)),
-		);
+		applySerializedParams(serialize(compositeQuery), params);
 
 		const panelType = record.condition.compositeQuery.panelType;
 		if (panelType) {

frontend/src/container/InfraMonitoringK8s/Base/K8sBaseDetails.tsx

@@ -28,6 +28,10 @@ import {
 	Time,
 } from 'container/TopNav/DateTimeSelectionV2/types';
 import { useIsDarkMode } from 'hooks/useDarkMode';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { GetQueryResultsProps } from 'lib/dashboard/getQueryResults';
 import GetMinMax from 'lib/getMinMax';
 import {
@@ -410,7 +414,7 @@ export default function K8sBaseDetails<T>({
 				},
 			};
 
-			urlQuery.set('compositeQuery', JSON.stringify(compositeQuery));
+			applySerializedParams(serialize(compositeQuery as any), urlQuery);
 
 			openInNewTab(`${ROUTES.LOGS_EXPLORER}?${urlQuery.toString()}`);
 		} else if (selectedView === VIEW_TYPES.TRACES) {
@@ -435,7 +439,7 @@ export default function K8sBaseDetails<T>({
 				},
 			};
 
-			urlQuery.set('compositeQuery', JSON.stringify(compositeQuery));
+			applySerializedParams(serialize(compositeQuery as any), urlQuery);
 
 			openInNewTab(`${ROUTES.TRACES_EXPLORER}?${urlQuery.toString()}`);
 		}

frontend/src/container/IngestionSettings/MultiIngestionSettings.tsx

@@ -53,6 +53,7 @@ import { convertToApiError } from 'api/ErrorResponseHandlerForGeneratedAPIs';
 import { useGetGlobalConfig } from 'api/generated/services/global';
 import useDebouncedFn from 'hooks/useDebouncedFunction';
 import { useNotifications } from 'hooks/useNotifications';
+import { serialize } from 'lib/compositeQuery/serializer';
 import { cloneDeep, isNil, isUndefined } from 'lodash-es';
 import {
 	ArrowUpRight,
@@ -77,6 +78,7 @@ import {
 	UpdateLimitProps,
 } from 'types/api/ingestionKeys/limits/types';
 import { PaginationProps } from 'types/api/ingestionKeys/types';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
 import { MeterAggregateOperator } from 'types/common/queryBuilder';
 import { USER_ROLES } from 'types/roles';
 import { getDaysUntilExpiry } from 'utils/timeUtils';
@@ -896,8 +898,6 @@ function MultiIngestionSettings(): JSX.Element {
 			},
 		};
 
-		const stringifiedQuery = JSON.stringify(query);
-
 		const thresholds = cloneDeep(INITIAL_ALERT_THRESHOLD_STATE.thresholds);
 		thresholds[0].thresholdValue = thresholdValue;
 		thresholds[0].unit = thresholdUnit;
@@ -907,17 +907,12 @@ function MultiIngestionSettings(): JSX.Element {
 			? `[ingestion][${signal.signal}] ${keyName} has exceeded daily ingestion limit`
 			: `[ingestion][${signal.signal}] ${signal.signal} has exceeded daily ingestion limit`;
 
-		const URL = `${ROUTES.ALERTS_NEW}?${
-			QueryParams.compositeQuery
-		}=${encodeURIComponent(stringifiedQuery)}&${
-			QueryParams.thresholds
-		}=${encodeURIComponent(JSON.stringify(thresholds))}&${
-			QueryParams.ruleName
-		}=${encodeURIComponent(ruleName)}&${
-			QueryParams.yAxisUnit
-		}=${encodeURIComponent(yAxisUnit)}`;
+		const params = serialize(query as Query);
+		params.set(QueryParams.thresholds, JSON.stringify(thresholds));
+		params.set(QueryParams.ruleName, ruleName);
+		params.set(QueryParams.yAxisUnit, yAxisUnit);
 
-		history.push(URL);
+		history.push(`${ROUTES.ALERTS_NEW}?${params.toString()}`);
 	};
 
 	const columns: AntDTableProps<GatewaytypesIngestionKeyDTO>['columns'] = [

frontend/src/container/IngestionSettings/__tests__/MultiIngestionSettings.test.tsx

@@ -1,5 +1,6 @@
 import { GatewaytypesGettableIngestionKeysDTO } from 'api/generated/services/sigNoz.schemas';
 import { QueryParams } from 'constants/query';
+import { deserialize } from 'lib/compositeQuery/serializer';
 import { rest, server } from 'mocks-server/server';
 import {
 	fireEvent,
@@ -132,17 +133,19 @@ describe('MultiIngestionSettings Page', () => {
 		expect(thresholds[0].thresholdValue).toBe(1000);
 		expect(thresholds[0].unit).toBe('{count}');
 
-		const compositeQuery = JSON.parse(
-			urlParams.get(QueryParams.compositeQuery) || '{}',
-		);
-		expect(compositeQuery.unit).toBe('{count}');
-		expect(compositeQuery.builder.queryData).toBeDefined();
+		const compositeQuery = deserialize(urlParams);
+		expect(compositeQuery).not.toBeNull();
+		expect(compositeQuery?.unit).toBe('{count}');
+		expect(compositeQuery?.builder.queryData).toBeDefined();
 
-		const firstQueryData = compositeQuery.builder.queryData[0];
-		expect(firstQueryData.filter.expression).toContain(
+		const firstQueryData = compositeQuery?.builder.queryData[0];
+		expect(firstQueryData?.filter?.expression).toContain(
 			"signoz.workspace.key.id='k1'",
 		);
-		expect(firstQueryData.aggregations[0].metricName).toBe(
+		const firstAggregation = firstQueryData?.aggregations?.[0] as {
+			metricName: string;
+		};
+		expect(firstAggregation.metricName).toBe(
 			'signoz.meter.metric.datapoint.count',
 		);
 
@@ -213,18 +216,18 @@ describe('MultiIngestionSettings Page', () => {
 		expect(thresholds[0].thresholdValue).toBe(400);
 		expect(thresholds[0].unit).toBe('GiBy');
 
-		const compositeQuery = JSON.parse(
-			urlParams.get(QueryParams.compositeQuery) || '{}',
-		);
-		expect(compositeQuery.unit).toBe('bytes');
+		const compositeQuery = deserialize(urlParams);
+		expect(compositeQuery).not.toBeNull();
+		expect(compositeQuery?.unit).toBe('bytes');
 
-		const firstQueryData = compositeQuery.builder.queryData[0];
-		expect(firstQueryData.filter.expression).toContain(
+		const firstQueryData = compositeQuery?.builder.queryData[0];
+		expect(firstQueryData?.filter?.expression).toContain(
 			"signoz.workspace.key.id='k2'",
 		);
-		expect(firstQueryData.aggregations[0].metricName).toBe(
-			'signoz.meter.log.size',
-		);
+		const firstAggregation = firstQueryData?.aggregations?.[0] as {
+			metricName: string;
+		};
+		expect(firstAggregation.metricName).toBe('signoz.meter.log.size');
 
 		expect(urlParams.get(QueryParams.yAxisUnit)).toBe('bytes');
 		expect(urlParams.get(QueryParams.ruleName)).toContain('logs');

frontend/src/container/LLMObservability/Settings/ModelPricing/LLMObservabilityModelPricing.module.scss

@@ -13,6 +13,9 @@
 }
 
 .pageHeaderTitle {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-2);
 	.title {
 		margin: 0;
 		font-size: var(--font-size-xl);

frontend/src/container/LLMObservability/Settings/ModelPricing/LLMObservabilityModelPricing.tsx

@@ -1,3 +1,7 @@
+import { Tabs } from '@signozhq/ui/tabs';
+import { Typography } from '@signozhq/ui/typography';
+
+import ModelCostTabPanel from './ModelCostTabPanel';
 import styles from './LLMObservabilityModelPricing.module.scss';
 
 function LLMObservabilityModelPricing(): JSX.Element {
@@ -8,12 +12,34 @@ function LLMObservabilityModelPricing(): JSX.Element {
 		>
 			<header className={styles.pageHeader}>
 				<div className={styles.pageHeaderTitle}>
-					<h1 className={styles.title}>Configuration</h1>
-					<p className={styles.subtitle}>
+					<Typography.Text as="h1" size="large" weight="semibold">
+						Configuration
+					</Typography.Text>
+					<Typography.Text color="muted">
 						Model pricing and cost estimation settings
-					</p>
+					</Typography.Text>
 				</div>
 			</header>
+
+			<Tabs
+				// Model costs is the only enabled tab for now, so default to it. When
+				// the unpriced-models tab lands, this can become a URL-backed param.
+				defaultValue="model-costs"
+				items={[
+					{
+						key: 'model-costs',
+						label: 'Model costs',
+						children: <ModelCostTabPanel />,
+					},
+					{
+						// Unpriced-models tab lands in a later PR.
+						key: 'unpriced-models',
+						label: 'Unpriced models',
+						disabled: true,
+						children: null,
+					},
+				]}
+			/>
 		</div>
 	);
 }

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/ModelCostTabPanel.module.scss

@@ -0,0 +1,7 @@
+.pageError {
+	padding: var(--spacing-6) var(--spacing-8);
+	border-radius: var(--radius-2);
+	background: color-mix(in srgb, var(--bg-cherry-400) 8%, transparent);
+	color: var(--text-cherry-400);
+	font-size: var(--periscope-font-size-base);
+}

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/ModelCostTabPanel.tsx

@@ -0,0 +1,61 @@
+import { useMemo } from 'react';
+import { useListLLMPricingRules } from 'api/generated/services/llmpricingrules';
+import { type ListLLMPricingRulesParams } from 'api/generated/services/sigNoz.schemas';
+import { useTableParams } from 'components/TanStackTableView';
+import { Typography } from '@signozhq/ui/typography';
+
+import { LIMIT_KEY, PAGE_KEY, PAGE_SIZE } from '../constants';
+import styles from './ModelCostTabPanel.module.scss';
+import ModelCostsTable from './components/ModelCostsTable';
+import { type LlmpricingruletypesLLMPricingRuleDTO } from 'api/generated/services/sigNoz.schemas';
+
+function ModelCostTabPanel(): JSX.Element {
+	const { page, limit } = useTableParams(
+		{ page: PAGE_KEY, limit: LIMIT_KEY },
+		{ page: 1, limit: PAGE_SIZE },
+	);
+
+	// Search + source filters are intentionally omitted for now — the list API
+	// doesn't honour them yet. They'll be reintroduced here once it does.
+	const listParams: ListLLMPricingRulesParams = {
+		offset: (page - 1) * limit,
+		limit,
+	};
+
+	const { data, isLoading, isError } = useListLLMPricingRules(listParams);
+
+	const rules: LlmpricingruletypesLLMPricingRuleDTO[] = useMemo(
+		() => data?.data?.items || [],
+		[data],
+	);
+	const total = data?.data?.total ?? 0;
+
+	return (
+		<>
+			{isError && (
+				<div className={styles.pageError} role="alert">
+					Failed to load pricing rules. Please try again.
+				</div>
+			)}
+
+			{/* Read-only listing. Edit/Add wiring + the drawer land in the next PR. */}
+			<ModelCostsTable
+				rules={rules}
+				isLoading={isLoading}
+				total={total}
+				selectedRuleId={null}
+				canManage={false}
+				onEdit={(): void => undefined}
+				onDelete={(): void => undefined}
+			/>
+
+			<footer>
+				<Typography.Text color="muted" size="small">
+					All prices per 1M tokens (USD)
+				</Typography.Text>
+			</footer>
+		</>
+	);
+}
+
+export default ModelCostTabPanel;

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/ModelCostActionsMenu.module.scss

@@ -0,0 +1,8 @@
+.actionButton {
+	opacity: 0.7;
+	transition: opacity 0.15s ease;
+
+	&:hover {
+		opacity: 1;
+	}
+}

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/ModelCostActionsMenu.tsx

@@ -0,0 +1,61 @@
+import { useMemo } from 'react';
+import { Ellipsis } from '@signozhq/icons';
+import { Button } from '@signozhq/ui/button';
+import { DropdownMenuSimple, type MenuItem } from '@signozhq/ui/dropdown-menu';
+import { type LlmpricingruletypesLLMPricingRuleDTO } from 'api/generated/services/sigNoz.schemas';
+
+import styles from './ModelCostActionsMenu.module.scss';
+
+interface ModelCostActionsMenuProps {
+	rule: LlmpricingruletypesLLMPricingRuleDTO;
+	canManage: boolean;
+	onEdit: (rule: LlmpricingruletypesLLMPricingRuleDTO) => void;
+	onDelete: (rule: LlmpricingruletypesLLMPricingRuleDTO) => void;
+}
+
+// Per-row kebab menu for the model-costs table. Only manage users get actions
+// (Edit + Delete); view-only users have nothing to act on, so the cell stays
+// empty rather than showing a single-item menu.
+function ModelCostActionsMenu({
+	rule,
+	canManage,
+	onEdit,
+	onDelete,
+}: ModelCostActionsMenuProps): JSX.Element | null {
+	const menuItems = useMemo<MenuItem[]>(
+		() => [
+			{
+				key: 'edit',
+				label: 'Edit',
+				onClick: (): void => onEdit(rule),
+			},
+			{
+				key: 'delete',
+				label: 'Delete',
+				danger: true,
+				onClick: (): void => onDelete(rule),
+			},
+		],
+		[onEdit, onDelete, rule],
+	);
+
+	if (!canManage) {
+		return null;
+	}
+
+	return (
+		<DropdownMenuSimple menu={{ items: menuItems }} align="end">
+			<Button
+				variant="ghost"
+				color="secondary"
+				size="icon"
+				className={styles.actionButton}
+				testId={`model-cost-actions-${rule.id}`}
+			>
+				<Ellipsis size={16} />
+			</Button>
+		</DropdownMenuSimple>
+	);
+}
+
+export default ModelCostActionsMenu;

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/ModelCostsTable.module.scss

@@ -0,0 +1,20 @@
+.modelCostsTable {
+	margin-top: var(--spacing-8);
+	--tanstack-table-row-height: 48px;
+	height: calc(100vh - 250px);
+	overflow-y: auto;
+
+	:global(table) tbody tr {
+		cursor: default;
+	}
+}
+
+.modelCostsEmpty {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	margin-top: var(--spacing-8);
+	min-height: 400px;
+	color: var(--text-vanilla-400);
+	font-size: var(--periscope-font-size-base);
+}

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/ModelCostsTable.tsx

@@ -0,0 +1,73 @@
+import { useMemo } from 'react';
+import TanStackTable from 'components/TanStackTableView';
+
+import {
+	LIMIT_KEY,
+	PAGE_KEY,
+	PAGE_SIZE,
+	SKELETON_ROW_COUNT,
+} from '../../../constants';
+import styles from './ModelCostsTable.module.scss';
+import { getModelCostsColumns } from './TableConfig';
+import { type LlmpricingruletypesLLMPricingRuleDTO } from 'api/generated/services/sigNoz.schemas';
+
+interface ModelCostsTableProps {
+	rules: LlmpricingruletypesLLMPricingRuleDTO[];
+	isLoading: boolean;
+	total: number;
+	selectedRuleId: string | null;
+	canManage: boolean;
+	onEdit: (rule: LlmpricingruletypesLLMPricingRuleDTO) => void;
+	onDelete: (rule: LlmpricingruletypesLLMPricingRuleDTO) => void;
+}
+
+// The table owns its own pagination URL state (page/limit) via enableQueryParams;
+// ModelCostsTab reads the same keys to build the list request. Virtual scroll is
+// disabled: a plain table renders fine at our page sizes (up to 100 rows) and the
+// fixed-height scroll viewport (.modelCostsTable) keeps large pages scrolling
+// inside the table.
+function ModelCostsTable({
+	rules,
+	isLoading,
+	total,
+	selectedRuleId,
+	canManage,
+	onEdit,
+	onDelete,
+}: ModelCostsTableProps): JSX.Element {
+	const columns = useMemo(
+		() => getModelCostsColumns({ canManage, onEdit, onDelete }),
+		[canManage, onEdit, onDelete],
+	);
+
+	if (!isLoading && rules.length === 0) {
+		return (
+			<div className={styles.modelCostsEmpty} data-testid="model-costs-empty">
+				No model costs yet.
+			</div>
+		);
+	}
+
+	return (
+		<TanStackTable<LlmpricingruletypesLLMPricingRuleDTO>
+			className={styles.modelCostsTable}
+			data={rules}
+			columns={columns}
+			isLoading={isLoading}
+			skeletonRowCount={SKELETON_ROW_COUNT}
+			getRowKey={(row): string => row.id}
+			isRowActive={(row): boolean => row.id === selectedRuleId}
+			disableVirtualScroll
+			testId="model-costs-table"
+			enableQueryParams={{ page: PAGE_KEY, limit: LIMIT_KEY }}
+			pagination={{
+				total,
+				defaultLimit: PAGE_SIZE,
+				showTotalCount: true,
+				totalCountLabel: 'models',
+			}}
+		/>
+	);
+}
+
+export default ModelCostsTable;

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/TableConfig/index.ts

@@ -0,0 +1 @@
+export { getModelCostsColumns } from './table.config';

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/TableConfig/table.config.tsx

@@ -0,0 +1,161 @@
+import { Badge } from '@signozhq/ui/badge';
+import { Typography } from '@signozhq/ui/typography';
+import type { TableColumnDef } from 'components/TanStackTableView';
+import { startCase } from 'lodash-es';
+
+import styles from './tableConfig.module.scss';
+import ModelCostActionsMenu from '../ModelCostActionsMenu';
+import { type LlmpricingruletypesLLMPricingRuleDTO } from 'api/generated/services/sigNoz.schemas';
+
+import {
+	formatPricePerMillion,
+	getCanonicalId,
+	getExtraBuckets,
+	getRelativeLastSeen,
+	getSourceLabel,
+} from '../../../../utils';
+
+interface ColumnsConfig {
+	canManage: boolean;
+	onEdit: (rule: LlmpricingruletypesLLMPricingRuleDTO) => void;
+	onDelete: (rule: LlmpricingruletypesLLMPricingRuleDTO) => void;
+}
+
+// Column definitions for the model-costs TanStackTable. Sorting is intentionally
+// off across the board — the list API only accepts offset/limit, so there's no
+// server-side ordering to back a sortable header yet.
+export function getModelCostsColumns({
+	canManage,
+	onEdit,
+	onDelete,
+}: ColumnsConfig): TableColumnDef<LlmpricingruletypesLLMPricingRuleDTO>[] {
+	return [
+		{
+			id: 'model',
+			header: 'Model',
+			accessorFn: (row): string => row.modelName ?? '',
+			// Flexes to absorb spare width alongside Extra buckets so the row fills
+			// the container instead of leaving a gap on the right.
+			width: { min: 240, default: '100%' },
+			enableMove: false,
+			enableRemove: false,
+			cell: ({ row }): JSX.Element => (
+				<div className={styles.modelCell}>
+					<Typography.Text
+						weight="semibold"
+						truncate={1}
+						testId={`model-cell-name-${row.id}`}
+					>
+						{row.modelName}
+					</Typography.Text>
+
+					<Typography.Text truncate={1}>{getCanonicalId(row)}</Typography.Text>
+				</div>
+			),
+		},
+		{
+			id: 'provider',
+			header: 'Provider',
+			accessorKey: 'provider',
+			width: { min: 140 },
+			enableMove: false,
+			cell: ({ row }): string => row.provider ?? '',
+		},
+		{
+			id: 'input',
+			header: 'Input / 1M',
+			width: { min: 120 },
+			enableMove: false,
+			cell: ({ row }): JSX.Element => (
+				<Typography.Text>
+					{formatPricePerMillion(row.pricing?.input)}
+				</Typography.Text>
+			),
+		},
+		{
+			id: 'output',
+			header: 'Output / 1M',
+			width: { min: 120 },
+			enableMove: false,
+			cell: ({ row }): JSX.Element => (
+				<Typography.Text>
+					{formatPricePerMillion(row.pricing?.output)}
+				</Typography.Text>
+			),
+		},
+		{
+			id: 'extraBuckets',
+			header: 'Extra buckets',
+			width: { min: 200, default: '100%' },
+			enableMove: false,
+			cell: ({ row }): JSX.Element => {
+				const buckets = getExtraBuckets(row);
+				if (buckets.length === 0) {
+					return (
+						<Typography.Text color="muted" as="span">
+							—
+						</Typography.Text>
+					);
+				}
+				return (
+					<div className={styles.extraBuckets}>
+						{buckets.map((bucket) => (
+							<Badge
+								key={bucket.key}
+								color="vanilla"
+								variant="outline"
+								className={styles.extraBucketsChip}
+							>
+								<Typography.Text as="span" size="small">
+									{startCase(bucket.key)}
+								</Typography.Text>
+								<Typography.Text as="span" size="small" weight="semibold">
+									{formatPricePerMillion(bucket.pricePerMillion)}
+								</Typography.Text>
+							</Badge>
+						))}
+					</div>
+				);
+			},
+		},
+		{
+			id: 'source',
+			header: 'Source',
+			width: { min: 130 },
+			enableMove: false,
+			cell: ({ row }): JSX.Element => (
+				<Badge
+					color={row.isOverride ? 'amber' : 'robin'}
+					variant="outline"
+					className={styles.sourceBadge}
+					data-testid={`source-badge-${row.id}`}
+				>
+					{getSourceLabel(row)}
+				</Badge>
+			),
+		},
+		{
+			id: 'lastSeen',
+			header: 'Last seen',
+			width: { min: 120 },
+			enableMove: false,
+			cell: ({ row }): string => getRelativeLastSeen(row),
+		},
+		{
+			id: 'actions',
+			header: '',
+			width: { fixed: '56px', ignoreLastColumnFill: true },
+			pin: 'right',
+			enableMove: false,
+			enableRemove: false,
+			cell: ({ row }): JSX.Element | null => (
+				<ModelCostActionsMenu
+					rule={row}
+					canManage={canManage}
+					onEdit={onEdit}
+					onDelete={onDelete}
+				/>
+			),
+		},
+	];
+}

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/TableConfig/tableConfig.module.scss

@@ -0,0 +1,26 @@
+.modelCell {
+	display: flex;
+	flex-direction: column;
+	gap: var(--spacing-1);
+	min-width: 0;
+}
+
+.extraBuckets {
+	display: flex;
+	// Keep chips on a single line so the row stays at the table's fixed row
+	// height; the column flexes to 100% so there's room for both.
+	flex-wrap: nowrap;
+	gap: var(--spacing-3);
+	overflow: hidden;
+}
+
+.extraBucketsChip {
+	display: inline-flex;
+	align-items: center;
+	gap: var(--spacing-3);
+	margin: 0;
+}
+
+.sourceBadge {
+	margin: 0;
+}

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/components/ModelCostsTable/index.ts

@@ -0,0 +1 @@
+export { default } from './ModelCostsTable';

frontend/src/container/LLMObservability/Settings/ModelPricing/ModelCostTabPanel/index.ts

@@ -0,0 +1 @@
+export { default } from './ModelCostTabPanel';

frontend/src/container/LLMObservability/Settings/ModelPricing/constants.ts

@@ -0,0 +1,6 @@
+export const PAGE_SIZE = 20;
+
+export const PAGE_KEY = 'page';
+export const LIMIT_KEY = 'limit';
+
+export const SKELETON_ROW_COUNT = PAGE_SIZE;

frontend/src/container/LLMObservability/Settings/ModelPricing/types.ts

@@ -0,0 +1,4 @@
+export interface ExtraBucket {
+	key: string;
+	pricePerMillion: number;
+}

frontend/src/container/LLMObservability/Settings/ModelPricing/utils.ts

@@ -0,0 +1,60 @@
+import dayjs from 'dayjs';
+import relativeTime from 'dayjs/plugin/relativeTime';
+
+import type { ExtraBucket } from './types';
+import type { LlmpricingruletypesLLMPricingRuleDTO } from 'api/generated/services/sigNoz.schemas';
+
+dayjs.extend(relativeTime);
+
+const getRelativeTime = (
+	timestamp: string | number | Date | null | undefined,
+): string => {
+	const parsed = timestamp != null ? dayjs(timestamp) : null;
+	return parsed?.isValid() ? parsed.fromNow() : '—';
+};
+
+// ─── Display helpers ─────────────────────────────────────────────────────────
+
+export const formatPricePerMillion = (value: number | undefined): string => {
+	if (value === undefined || value === null) {
+		return '—';
+	}
+	// 2dp is enough for per-1M pricing. we can update this later we models have sub-cent pricing.
+	return `$${value.toFixed(2)}`;
+};
+
+export const getExtraBuckets = (
+	rule: LlmpricingruletypesLLMPricingRuleDTO,
+): ExtraBucket[] => {
+	const cache = rule.pricing?.cache;
+	if (!cache) {
+		return [];
+	}
+	const buckets: ExtraBucket[] = [];
+	if (typeof cache.read === 'number' && cache.read > 0) {
+		buckets.push({ key: 'cache_read', pricePerMillion: cache.read });
+	}
+	if (typeof cache.write === 'number' && cache.write > 0) {
+		buckets.push({ key: 'cache_write', pricePerMillion: cache.write });
+	}
+	return buckets;
+};
+
+export const getSourceLabel = (
+	rule: LlmpricingruletypesLLMPricingRuleDTO,
+): 'Auto' | 'User override' => (rule.isOverride ? 'User override' : 'Auto');
+
+export const getRelativeLastSeen = (
+	rule: LlmpricingruletypesLLMPricingRuleDTO,
+): string => getRelativeTime(rule.updatedAt || rule.syncedAt || rule.createdAt);
+
+// Canonical id shown under the model name, e.g. "openai:gpt-4o". Both segments
+// are lower-cased so the id is consistently normalised (providers/models can
+// arrive with mixed casing).
+export const getCanonicalId = (
+	rule: LlmpricingruletypesLLMPricingRuleDTO,
+): string => {
+	const provider = rule.provider?.trim().toLowerCase() || 'unknown';
+	const model = rule.modelName?.trim().toLowerCase() || 'unknown';
+	return `${provider}:${model}`;
+};

frontend/src/container/ListAlertRules/useAlertRulesHandlers.ts

@@ -6,6 +6,10 @@ import { sanitizeDefaultAlertQuery } from 'container/EditAlertV2/utils';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import { useTableRowClick } from 'hooks/useTableRowClick';
 import useUrlQuery from 'hooks/useUrlQuery';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { mapQueryDataFromApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataFromApi';
 import { toCompositeMetricQuery } from 'types/api/alerts/convert';
 import { isModifierKeyPressed } from 'utils/app';
@@ -31,10 +35,7 @@ export function useAlertRulesHandlers(
 				mapQueryDataFromApi(toCompositeMetricQuery(rule.condition.compositeQuery)),
 				rule.alertType,
 			);
-			params.set(
-				QueryParams.compositeQuery,
-				encodeURIComponent(JSON.stringify(compositeQuery)),
-			);
+			applySerializedParams(serialize(compositeQuery), params);
 
 			const panelType = rule.condition.compositeQuery.panelType;
 			if (panelType) {

frontend/src/container/LogDetailedView/ContextView/ContextLogRenderer.tsx

@@ -14,6 +14,10 @@ import { FontSize } from 'container/OptionsMenu/types';
 import { ORDERBY_FILTERS } from 'container/QueryBuilder/filters/OrderByFilter/config';
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import useUrlQuery from 'hooks/useUrlQuery';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { ILog } from 'types/api/logs/log';
 import { Query, TagFilter } from 'types/api/queryBuilder/queryBuilderData';
 import { DataSource, StringOperators } from 'types/common/queryBuilder';
@@ -111,10 +115,7 @@ function ContextLogRenderer({
 		(logId: string): void => {
 			urlQuery.set(QueryParams.activeLogId, `"${logId}"`);
 
-			urlQuery.set(
-				QueryParams.compositeQuery,
-				encodeURIComponent(JSON.stringify(query)),
-			);
+			applySerializedParams(serialize(query), urlQuery);
 
 			const link = `${ROUTES.LOGS_EXPLORER}?${urlQuery.toString()}`;
 			window.open(withBasePath(link), '_blank', 'noopener,noreferrer');

frontend/src/container/MetricsApplication/Tabs/Overview.tsx

@@ -247,16 +247,12 @@ function Application(): JSX.Element {
 				const avialableParams = routeConfig[ROUTES.TRACE];
 				const queryString = getQueryString(avialableParams, urlParams);
 
-				const JSONCompositeQuery = encodeURIComponent(
-					JSON.stringify(apmToTraceQuery),
-				);
-
 				const newPath = generateExplorerPath(
 					isViewLogsClicked,
 					urlParams,
 					servicename,
 					selectedTraceTags,
-					JSONCompositeQuery,
+					apmToTraceQuery,
 					queryString,
 				);
 

frontend/src/container/MetricsApplication/Tabs/util.ts

@@ -8,6 +8,10 @@ import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import useClickOutside from 'hooks/useClickOutside';
 import useResourceAttribute from 'hooks/useResourceAttribute';
 import { resourceAttributesToTracesFilterItems } from 'hooks/useResourceAttribute/utils';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import { prepareQueryWithDefaultTimestamp } from 'pages/LogsExplorer/utils';
 import { traceFilterKeys } from 'pages/TracesExplorer/Filter/filterUtils';
@@ -60,16 +64,18 @@ export function generateExplorerPath(
 	urlParams: URLSearchParams,
 	servicename: string | undefined,
 	selectedTraceTags: string,
-	JSONCompositeQuery: string,
+	apmToTraceQuery: Query,
 	queryString: string[],
 ): string {
 	const basePath = isViewLogsClicked
 		? ROUTES.LOGS_EXPLORER
 		: ROUTES.TRACES_EXPLORER;
 
-	return `${basePath}?${urlParams.toString()}&selected={"serviceName":["${servicename}"]}&filterToFetchData=["duration","status","serviceName"]&spanAggregateCurrentPage=1&selectedTags=${selectedTraceTags}&${
-		QueryParams.compositeQuery
-	}=${JSONCompositeQuery}&${queryString.join('&')}`;
+	applySerializedParams(serialize(apmToTraceQuery), urlParams);
+
+	return `${basePath}?${urlParams.toString()}&selected={"serviceName":["${servicename}"]}&filterToFetchData=["duration","status","serviceName"]&spanAggregateCurrentPage=1&selectedTags=${selectedTraceTags}&${queryString.join(
+		'&',
+	)}`;
 }
 
 // TODO(@rahul-signoz): update the name of this function once we have view logs button in every panel
@@ -105,16 +111,12 @@ export function onViewTracePopupClick({
 		const avialableParams = routeConfig[ROUTES.TRACE];
 		const queryString = getQueryString(avialableParams, urlParams);
 
-		const JSONCompositeQuery = encodeURIComponent(
-			JSON.stringify(apmToTraceQuery),
-		);
-
 		const newPath = generateExplorerPath(
 			isViewLogsClicked,
 			urlParams,
 			servicename,
 			selectedTraceTags,
-			JSONCompositeQuery,
+			apmToTraceQuery,
 			queryString,
 		);
 

frontend/src/container/MetricsApplication/utils.ts

@@ -1,5 +1,6 @@
 import { QueryParams } from 'constants/query';
 import ROUTES from 'constants/routes';
+import { serialize } from 'lib/compositeQuery/serializer';
 import { withBasePath } from 'utils/basePath';
 
 import { TopOperationList } from './TopOperationsTable';
@@ -29,13 +30,11 @@ export const navigateToTrace = ({
 	);
 	urlParams.set(QueryParams.endTime, Math.floor(maxTime / 1_000_000).toString());
 
-	const JSONCompositeQuery = encodeURIComponent(JSON.stringify(apmToTraceQuery));
-
 	const newTraceExplorerPath = `${
 		ROUTES.TRACES_EXPLORER
-	}?${urlParams.toString()}&selected={"serviceName":["${servicename}"],"operation":["${operation}"]}&filterToFetchData=["duration","status","serviceName","operation"]&spanAggregateCurrentPage=1&selectedTags=${selectedTraceTags}&${
-		QueryParams.compositeQuery
-	}=${JSONCompositeQuery}`;
+	}?${urlParams.toString()}&selected={"serviceName":["${servicename}"],"operation":["${operation}"]}&filterToFetchData=["duration","status","serviceName","operation"]&spanAggregateCurrentPage=1&selectedTags=${selectedTraceTags}&${serialize(
+		apmToTraceQuery,
+	).toString()}`;
 
 	if (openInNewTab) {
 		window.open(withBasePath(newTraceExplorerPath), '_blank');

frontend/src/container/NewWidget/index.tsx

@@ -33,6 +33,7 @@ import { useKeyboardHotkeys } from 'hooks/hotkeys/useKeyboardHotkeys';
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
+import { serializeToParams } from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import { GetQueryResultsProps } from 'lib/dashboard/getQueryResults';
 import { getDashboardVariables } from 'lib/dashboardVariables/getDashboardVariables';
@@ -791,9 +792,7 @@ function NewWidget({
 		const queryParams = {
 			[QueryParams.expandedWidgetId]: widgetId,
 			[QueryParams.graphType]: graphType,
-			[QueryParams.compositeQuery]: encodeURIComponent(
-				JSON.stringify(currentQuery),
-			),
+			...serializeToParams(currentQuery),
 			[QueryParams.variables]: variables,
 		};
 

frontend/src/container/QueryTable/Drilldown/useBaseDrilldownNavigate.ts

@@ -2,6 +2,7 @@ import { useCallback } from 'react';
 import { QueryParams } from 'constants/query';
 import ROUTES from 'constants/routes';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
+import { serializeToParams } from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import { Query } from 'types/api/queryBuilder/queryBuilderData';
 
@@ -49,7 +50,7 @@ const useBaseDrilldownNavigate = ({
 
 			const timeRange = aggregateData?.timeRange;
 			let queryParams: Record<string, string> = {
-				[QueryParams.compositeQuery]: encodeURIComponent(JSON.stringify(viewQuery)),
+				...serializeToParams(viewQuery),
 				...(timeRange && {
 					[QueryParams.startTime]: timeRange.startTime.toString(),
 					[QueryParams.endTime]: timeRange.endTime.toString(),
@@ -94,7 +95,7 @@ export function buildDrilldownUrl(
 
 	const timeRange = aggregateData?.timeRange;
 	let queryParams: Record<string, string> = {
-		[QueryParams.compositeQuery]: encodeURIComponent(JSON.stringify(viewQuery)),
+		...serializeToParams(viewQuery),
 		...(timeRange && {
 			[QueryParams.startTime]: timeRange.startTime.toString(),
 			[QueryParams.endTime]: timeRange.endTime.toString(),

frontend/src/container/TopNav/DateTimeSelectionV2/index.tsx

@@ -35,6 +35,11 @@ import { GlobalReducer } from 'types/reducer/globalTime';
 import { addCustomTimeRange } from 'utils/customTimeRangeUtils';
 import { persistTimeDurationForRoute } from 'utils/metricsTimeStorageUtils';
 import { normalizeTimeToMs } from 'utils/timeUtils';
+import {
+	applySerializedParams,
+	deserialize,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { v4 as uuid } from 'uuid';
 
 import AutoRefresh from '../AutoRefreshV2';
@@ -278,7 +283,7 @@ function DateTimeSelection({
 		return `Refreshed ${secondsDiff} sec ago`;
 	}, [maxTime, minTime, selectedTime]);
 
-	const getUpdatedCompositeQuery = useCallback((): string => {
+	const getUpdatedCompositeQuery = useCallback((): URLSearchParams => {
 		let updatedCompositeQuery = cloneDeep(currentQuery);
 		updatedCompositeQuery.id = uuid();
 		// Remove the filters
@@ -299,7 +304,7 @@ function DateTimeSelection({
 				})),
 			},
 		};
-		return encodeURIComponent(JSON.stringify(updatedCompositeQuery));
+		return serialize(updatedCompositeQuery);
 	}, [currentQuery]);
 
 	const onSelectHandler = useCallback(
@@ -334,9 +339,9 @@ function DateTimeSelection({
 			// Remove Hidden Filters from URL query parameters on time change
 			urlQuery.delete(QueryParams.activeLogId);
 
-			if (urlQuery.has(QueryParams.compositeQuery)) {
-				const updatedCompositeQuery = getUpdatedCompositeQuery();
-				urlQuery.set(QueryParams.compositeQuery, updatedCompositeQuery);
+			const staledQuery = deserialize(urlQuery);
+			if (staledQuery) {
+				applySerializedParams(getUpdatedCompositeQuery(), urlQuery);
 			}
 
 			const generatedUrl = `${location.pathname}?${urlQuery.toString()}`;
@@ -424,9 +429,9 @@ function DateTimeSelection({
 				urlQuery.set(QueryParams.endTime, endTime?.toDate().getTime().toString());
 				urlQuery.delete(QueryParams.relativeTime);
 
-				if (urlQuery.has(QueryParams.compositeQuery)) {
-					const updatedCompositeQuery = getUpdatedCompositeQuery();
-					urlQuery.set(QueryParams.compositeQuery, updatedCompositeQuery);
+				const staledQuery = deserialize(urlQuery);
+				if (staledQuery) {
+					applySerializedParams(getUpdatedCompositeQuery(), urlQuery);
 				}
 
 				const generatedUrl = `${location.pathname}?${urlQuery.toString()}`;

frontend/src/hooks/__tests__/useSafeNavigate.utils.test.ts

@@ -0,0 +1,170 @@
+import { initialQueriesMap } from 'constants/queryBuilder';
+import {
+	areUrlsEffectivelySame,
+	isDefaultNavigation,
+} from 'hooks/useSafeNavigate.utils';
+import { serialize } from 'lib/compositeQuery/serializer';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
+
+const BASE = 'http://localhost';
+
+const urlFrom = (pathname: string, params?: URLSearchParams): URL => {
+	const search = params?.toString();
+	const query = search ? `?${search}` : '';
+	return new URL(`${pathname}${query}`, BASE);
+};
+
+/** Build params containing the serialized `compositeQuery` plus any extras. */
+const withQuery = (
+	query: Query,
+	extra: Record<string, string> = {},
+): URLSearchParams => {
+	const params = serialize(query);
+	Object.entries(extra).forEach(([key, value]) => params.set(key, value));
+	return params;
+};
+
+describe('areUrlsEffectivelySame', () => {
+	it('returns false when pathnames differ', () => {
+		expect(areUrlsEffectivelySame(urlFrom('/logs'), urlFrom('/traces'))).toBe(
+			false,
+		);
+	});
+
+	it('returns true for two identical param-less URLs', () => {
+		expect(areUrlsEffectivelySame(urlFrom('/logs'), urlFrom('/logs'))).toBe(true);
+	});
+
+	it('returns true when only the compositeQuery is present and identical', () => {
+		const params = withQuery(initialQueriesMap.logs);
+		expect(
+			areUrlsEffectivelySame(
+				urlFrom('/logs', params),
+				urlFrom('/logs', new URLSearchParams(params.toString())),
+			),
+		).toBe(true);
+	});
+
+	// Regression: a matching compositeQuery must NOT mask differences in other
+	// params. Previously every param was compared via the decoded query, so any
+	// two URLs sharing a compositeQuery were judged identical.
+	it('returns false when compositeQuery matches but another param differs', () => {
+		const url1 = urlFrom(
+			'/logs',
+			withQuery(initialQueriesMap.logs, { startTime: '1000' }),
+		);
+		const url2 = urlFrom(
+			'/logs',
+			withQuery(initialQueriesMap.logs, { startTime: '2000' }),
+		);
+		expect(areUrlsEffectivelySame(url1, url2)).toBe(false);
+	});
+
+	it('returns false when compositeQuery matches but a param exists on only one URL', () => {
+		const url1 = urlFrom(
+			'/logs',
+			withQuery(initialQueriesMap.logs, { startTime: '1000' }),
+		);
+		const url2 = urlFrom('/logs', withQuery(initialQueriesMap.logs));
+		expect(areUrlsEffectivelySame(url1, url2)).toBe(false);
+	});
+
+	it('ignores the volatile id when comparing compositeQuery', () => {
+		const url1 = urlFrom(
+			'/logs',
+			withQuery({ ...initialQueriesMap.logs, id: 'id-1' }),
+		);
+		const url2 = urlFrom(
+			'/logs',
+			withQuery({ ...initialQueriesMap.logs, id: 'id-2' }),
+		);
+		expect(areUrlsEffectivelySame(url1, url2)).toBe(true);
+	});
+
+	it('returns false when compositeQuery is semantically different', () => {
+		const url1 = urlFrom('/logs', withQuery(initialQueriesMap.logs));
+		const url2 = urlFrom('/metrics', withQuery(initialQueriesMap.metrics));
+		// Force same pathname so only the query differs.
+		expect(
+			areUrlsEffectivelySame(
+				url1,
+				urlFrom('/logs', new URLSearchParams(url2.search)),
+			),
+		).toBe(false);
+	});
+
+	it('returns false when compositeQuery exists on only one URL', () => {
+		const url1 = urlFrom('/logs', withQuery(initialQueriesMap.logs));
+		const url2 = urlFrom('/logs');
+		expect(areUrlsEffectivelySame(url1, url2)).toBe(false);
+	});
+
+	it('compares non-compositeQuery params directly when no compositeQuery is present', () => {
+		const same1 = urlFrom(
+			'/logs',
+			new URLSearchParams({ startTime: '1', endTime: '2' }),
+		);
+		const same2 = urlFrom(
+			'/logs',
+			new URLSearchParams({ startTime: '1', endTime: '2' }),
+		);
+		expect(areUrlsEffectivelySame(same1, same2)).toBe(true);
+
+		const diff = urlFrom(
+			'/logs',
+			new URLSearchParams({ startTime: '1', endTime: '3' }),
+		);
+		expect(areUrlsEffectivelySame(same1, diff)).toBe(false);
+	});
+
+	it('falls back to raw comparison when compositeQuery cannot be decoded', () => {
+		const corrupt1 = urlFrom(
+			'/logs',
+			new URLSearchParams({ compositeQuery: '%7Bnot-json' }),
+		);
+		const corrupt2 = urlFrom(
+			'/logs',
+			new URLSearchParams({ compositeQuery: '%7Bnot-json' }),
+		);
+		expect(areUrlsEffectivelySame(corrupt1, corrupt2)).toBe(true);
+
+		const corrupt3 = urlFrom(
+			'/logs',
+			new URLSearchParams({ compositeQuery: '%7Bother' }),
+		);
+		expect(areUrlsEffectivelySame(corrupt1, corrupt3)).toBe(false);
+	});
+});
+
+describe('isDefaultNavigation', () => {
+	it('returns false for different pathnames', () => {
+		expect(isDefaultNavigation(urlFrom('/logs'), urlFrom('/traces'))).toBe(false);
+	});
+
+	it('returns true when a clean URL gains params', () => {
+		expect(
+			isDefaultNavigation(
+				urlFrom('/logs'),
+				urlFrom('/logs', new URLSearchParams({ startTime: '1' })),
+			),
+		).toBe(true);
+	});
+
+	it('returns true when the target introduces a new param key', () => {
+		expect(
+			isDefaultNavigation(
+				urlFrom('/logs', new URLSearchParams({ startTime: '1' })),
+				urlFrom('/logs', new URLSearchParams({ startTime: '1', endTime: '2' })),
+			),
+		).toBe(true);
+	});
+
+	it('returns false when the target has no new param keys', () => {
+		expect(
+			isDefaultNavigation(
+				urlFrom('/logs', new URLSearchParams({ startTime: '1' })),
+				urlFrom('/logs', new URLSearchParams({ startTime: '9' })),
+			),
+		).toBe(false);
+	});
+});

frontend/src/hooks/logs/useActiveLog.ts

@@ -5,7 +5,6 @@ import { useDispatch, useSelector } from 'react-redux';
 import { useHistory, useLocation } from 'react-router-dom';
 import { getAggregateKeys } from 'api/queryBuilder/getAttributeKeys';
 import { SOMETHING_WENT_WRONG } from 'constants/api';
-import { QueryParams } from 'constants/query';
 import { OPERATORS, QueryBuilderKeys } from 'constants/queryBuilder';
 import ROUTES from 'constants/routes';
 import { MetricsType } from 'container/MetricsApplication/constant';
@@ -13,6 +12,7 @@ import { getOperatorValue } from 'container/QueryBuilder/filters/QueryBuilderSea
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
 import { useNotifications } from 'hooks/useNotifications';
 import useUrlQuery from 'hooks/useUrlQuery';
+import { deserialize } from 'lib/compositeQuery/serializer';
 import { getGeneratedFilterQueryString } from 'lib/getGeneratedFilterQueryString';
 import { chooseAutocompleteFromCustomValue } from 'lib/newQueryBuilder/chooseAutocompleteFromCustomValue';
 import { AppState } from 'store/reducers';
@@ -58,9 +58,14 @@ export const useActiveLog = (): UseActiveLog => {
 
 	const [activeLog, setActiveLog] = useState<ILog | null>(null);
 
-	// Close drawer/clear active log when query in URL changes
+	// Close drawer/clear active log when query in URL changes. Track the decoded
+	// query (not a single raw param) so it stays correct across serializer tiers
+	// that explode the query into many keys.
 	const urlQuery = useUrlQuery();
-	const compositeQuery = urlQuery.get(QueryParams.compositeQuery) ?? '';
+	const compositeQuery = useMemo(() => {
+		const decoded = deserialize(urlQuery);
+		return decoded ? JSON.stringify(decoded) : '';
+	}, [urlQuery]);
 	const prevQueryRef = useRef<string | null>(null);
 	useEffect(() => {
 		if (

frontend/src/hooks/queryBuilder/__tests__/useCreateAlerts.test.tsx

@@ -2,9 +2,10 @@ import { useMutation } from 'react-query';
 // eslint-disable-next-line no-restricted-imports
 import { useSelector } from 'react-redux';
 import { act, renderHook } from '@testing-library/react';
-import { QueryParams } from 'constants/query';
+import { deserialize } from 'lib/compositeQuery/serializer';
 import { mapQueryDataFromApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataFromApi';
 import { Widgets } from 'types/api/dashboard/getAll';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
 import { EQueryType } from 'types/common/dashboard';
 
 import useCreateAlerts from '../useCreateAlerts';
@@ -79,14 +80,14 @@ const buildWidget = (queryType: EQueryType | undefined): Widgets =>
 		},
 	}) as unknown as Widgets;
 
-const getCompositeQueryFromLastOpen = (): Record<string, unknown> => {
+const getCompositeQueryFromLastOpen = (): Query => {
 	const [url] = (window.open as jest.Mock).mock.calls[0];
 	const query = new URLSearchParams((url as string).split('?')[1]);
-	const raw = query.get(QueryParams.compositeQuery);
-	if (!raw) {
+	const composite = deserialize(query);
+	if (!composite) {
 		throw new Error('compositeQuery not found in URL');
 	}
-	return JSON.parse(decodeURIComponent(raw));
+	return composite;
 };
 
 describe('useCreateAlerts', () => {

frontend/src/hooks/queryBuilder/__tests__/useGetCompositeQueryParam.test.ts

@@ -0,0 +1,26 @@
+import { renderHook } from '@testing-library/react';
+import { initialQueriesMap } from 'constants/queryBuilder';
+import { useGetCompositeQueryParam } from 'hooks/queryBuilder/useGetCompositeQueryParam';
+
+let mockUrlQuery = new URLSearchParams();
+
+jest.mock('hooks/useUrlQuery', () => ({
+	__esModule: true,
+	default: (): URLSearchParams => mockUrlQuery,
+}));
+
+describe('useGetCompositeQueryParam', () => {
+	it('decodes a legacy compositeQuery param', () => {
+		mockUrlQuery = new URLSearchParams({
+			compositeQuery: encodeURIComponent(JSON.stringify(initialQueriesMap.logs)),
+		});
+		const { result } = renderHook(() => useGetCompositeQueryParam());
+		expect(result.current?.builder.queryData[0].dataSource).toBe('logs');
+	});
+
+	it('returns null when the param is absent', () => {
+		mockUrlQuery = new URLSearchParams();
+		const { result } = renderHook(() => useGetCompositeQueryParam());
+		expect(result.current).toBeNull();
+	});
+});

frontend/src/hooks/queryBuilder/useCreateAlerts.tsx

@@ -14,6 +14,10 @@ import { MenuItemKeys } from 'container/GridCardLayout/WidgetHeader/contants';
 import { useDashboardVariables } from 'hooks/dashboard/useDashboardVariables';
 import { useDashboardVariablesByType } from 'hooks/dashboard/useDashboardVariablesByType';
 import { useNotifications } from 'hooks/useNotifications';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { getDashboardVariables } from 'lib/dashboardVariables/getDashboardVariables';
 import { mapQueryDataFromApi } from 'lib/newQueryBuilder/queryBuilderMappers/mapQueryDataFromApi';
 import { isEmpty } from 'lodash-es';
@@ -86,10 +90,7 @@ const useCreateAlerts = (widget?: Widgets, caller?: string): VoidFunction => {
 				}
 
 				const params = new URLSearchParams();
-				params.set(
-					QueryParams.compositeQuery,
-					encodeURIComponent(JSON.stringify(updatedQuery)),
-				);
+				applySerializedParams(serialize(updatedQuery), params);
 				params.set(QueryParams.panelTypes, widget.panelTypes);
 				params.set(QueryParams.version, ENTITY_VERSION_V5);
 				params.set(QueryParams.source, YAxisSource.DASHBOARDS);

frontend/src/hooks/queryBuilder/useGetCompositeQueryParam.ts

@@ -1,72 +1,10 @@
-import { useMemo } from 'react';
-import {
-	convertAggregationToExpression,
-	convertFiltersToExpressionWithExistingQuery,
-	convertHavingToExpression,
-} from 'components/QueryBuilderV2/utils';
-import { QueryParams } from 'constants/query';
 import useUrlQuery from 'hooks/useUrlQuery';
-import { BaseAutocompleteData } from 'types/api/queryBuilder/queryAutocompleteResponse';
+import { deserialize } from 'lib/compositeQuery/serializer';
+import { useMemo } from 'react';
 import { Query } from 'types/api/queryBuilder/queryBuilderData';
 
 export const useGetCompositeQueryParam = (): Query | null => {
 	const urlQuery = useUrlQuery();
 
-	return useMemo(() => {
-		const compositeQuery = urlQuery.get(QueryParams.compositeQuery);
-		let parsedCompositeQuery: Query | null = null;
-
-		try {
-			if (!compositeQuery) {
-				return null;
-			}
-
-			// MDN reference - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#decoding_query_parameters_from_a_url
-			// MDN reference to support + characters using encoding - https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams#preserving_plus_signs add later
-			parsedCompositeQuery = JSON.parse(
-				decodeURIComponent(compositeQuery.replace(/\+/g, ' ')),
-			);
-
-			// Convert old format to new format for each query in builder.queryData
-			if (parsedCompositeQuery?.builder?.queryData) {
-				parsedCompositeQuery.builder.queryData =
-					parsedCompositeQuery.builder.queryData.map((query) => {
-						const existingExpression = query.filter?.expression || '';
-						const convertedQuery = { ...query };
-
-						const convertedFilter = convertFiltersToExpressionWithExistingQuery(
-							query.filters || { items: [], op: 'AND' },
-							existingExpression,
-						);
-						convertedQuery.filter = convertedFilter.filter;
-						convertedQuery.filters = convertedFilter.filters;
-
-						// Convert having if needed
-						if (Array.isArray(query.having)) {
-							const convertedHaving = convertHavingToExpression(query.having);
-							convertedQuery.having = convertedHaving;
-						}
-
-						// Convert aggregation if needed
-						if (!query.aggregations && query.aggregateOperator) {
-							const convertedAggregation = convertAggregationToExpression({
-								aggregateOperator: query.aggregateOperator,
-								aggregateAttribute: query.aggregateAttribute as BaseAutocompleteData,
-								dataSource: query.dataSource,
-								timeAggregation: query.timeAggregation,
-								spaceAggregation: query.spaceAggregation,
-								reduceTo: query.reduceTo,
-								temporality: query.temporality,
-							}) as any; // Type assertion to handle union type
-							convertedQuery.aggregations = convertedAggregation;
-						}
-						return convertedQuery;
-					});
-			}
-		} catch (e) {
-			parsedCompositeQuery = null;
-		}
-
-		return parsedCompositeQuery;
-	}, [urlQuery]);
+	return useMemo(() => deserialize(urlQuery), [urlQuery]);
 };

frontend/src/hooks/useSafeNavigate.ts

@@ -1,6 +1,9 @@
+import {
+	areUrlsEffectivelySame,
+	isDefaultNavigation,
+} from 'hooks/useSafeNavigate.utils';
 import { useCallback } from 'react';
 import { useLocation, useNavigate } from 'react-router-dom-v5-compat';
-import { cloneDeep, isEqual } from 'lodash-es';
 import { withBasePath } from 'utils/basePath';
 
 interface NavigateOptions {
@@ -18,77 +21,6 @@ interface UseSafeNavigateProps {
 	preventSameUrlNavigation?: boolean;
 }
 
-const areUrlsEffectivelySame = (url1: URL, url2: URL): boolean => {
-	if (url1.pathname !== url2.pathname) {
-		return false;
-	}
-
-	const params1 = new URLSearchParams(url1.search);
-	const params2 = new URLSearchParams(url2.search);
-
-	const allParams = new Set([...params1.keys(), ...params2.keys()]);
-
-	return [...allParams].every((param) => {
-		if (param === 'compositeQuery') {
-			try {
-				const query1 = params1.get('compositeQuery');
-				const query2 = params2.get('compositeQuery');
-
-				if (!query1 || !query2) {
-					return false;
-				}
-
-				const decoded1 = JSON.parse(decodeURIComponent(query1));
-				const decoded2 = JSON.parse(decodeURIComponent(query2));
-
-				const filtered1 = cloneDeep(decoded1);
-				const filtered2 = cloneDeep(decoded2);
-
-				delete filtered1.id;
-				delete filtered2.id;
-
-				return isEqual(filtered1, filtered2);
-			} catch (error) {
-				console.warn('Error comparing compositeQuery:', error);
-				return false;
-			}
-		}
-
-		return params1.get(param) === params2.get(param);
-	});
-};
-
-/**
- * Determines if this navigation is adding default/initial parameters
- * Returns true if:
- * 1. We're staying on the same page (same pathname)
- * 2. Either:
- *    - Current URL has no params and target URL has params, or
- *    - Target URL has new params that didn't exist in current URL
- */
-const isDefaultNavigation = (currentUrl: URL, targetUrl: URL): boolean => {
-	// Different pathnames means it's not a default navigation
-	if (currentUrl.pathname !== targetUrl.pathname) {
-		return false;
-	}
-
-	const currentParams = new URLSearchParams(currentUrl.search);
-	const targetParams = new URLSearchParams(targetUrl.search);
-
-	// Case 1: Clean URL getting params for the first time
-	if (!currentParams.toString() && targetParams.toString()) {
-		return true;
-	}
-
-	// Case 2: Check for new params that didn't exist before
-	const currentKeys = new Set(currentParams.keys());
-	const targetKeys = new Set(targetParams.keys());
-
-	// Find keys that exist in target but not in current
-	const newKeys = [...targetKeys].filter((key) => !currentKeys.has(key));
-
-	return newKeys.length > 0;
-};
 export const useSafeNavigate = (
 	{ preventSameUrlNavigation }: UseSafeNavigateProps = {
 		preventSameUrlNavigation: true,

frontend/src/hooks/useSafeNavigate.utils.ts

@@ -0,0 +1,103 @@
+import { deserialize } from 'lib/compositeQuery/serializer';
+import { COMPOSITE_QUERY_KEY } from 'lib/compositeQuery/types';
+import { isEqual } from 'lodash-es';
+
+/**
+ * Compare the (optional) `compositeQuery` param of two URLSearchParams
+ * semantically. Its serialized form is not byte-stable — the volatile `id` and
+ * the adapter choice both vary — so we decode and deep-compare, ignoring `id`.
+ *
+ * compositeQuery is not guaranteed to be present: absent on both sides counts
+ * as equal, present on only one side counts as different. When either side is
+ * present but can't be decoded, we fall back to comparing the raw values.
+ */
+const compositeQueriesEqual = (
+	params1: URLSearchParams,
+	params2: URLSearchParams,
+): boolean => {
+	const raw1 = params1.get(COMPOSITE_QUERY_KEY);
+	const raw2 = params2.get(COMPOSITE_QUERY_KEY);
+
+	if (!raw1 && !raw2) {
+		return true;
+	}
+	if (!raw1 || !raw2) {
+		return false;
+	}
+
+	try {
+		const decoded1 = deserialize(params1);
+		const decoded2 = deserialize(params2);
+
+		if (decoded1 && decoded2) {
+			// Ignore the volatile `id` when comparing queries.
+			const { id: _id1, ...rest1 } = decoded1;
+			const { id: _id2, ...rest2 } = decoded2;
+
+			return isEqual(rest1, rest2);
+		}
+	} catch (error) {
+		console.warn('Error comparing compositeQuery:', error);
+	}
+
+	// One or both could not be decoded — compare the raw encoded values.
+	return raw1 === raw2;
+};
+
+export const areUrlsEffectivelySame = (url1: URL, url2: URL): boolean => {
+	if (url1.pathname !== url2.pathname) {
+		return false;
+	}
+
+	const params1 = new URLSearchParams(url1.search);
+	const params2 = new URLSearchParams(url2.search);
+
+	// The compositeQuery is compared semantically (it round-trips through a
+	// non-stable serialized form); every other param is compared by raw value.
+	if (!compositeQueriesEqual(params1, params2)) {
+		return false;
+	}
+
+	const otherKeys = new Set(
+		[...params1.keys(), ...params2.keys()].filter(
+			(key) => key !== COMPOSITE_QUERY_KEY,
+		),
+	);
+
+	return [...otherKeys].every((key) => params1.get(key) === params2.get(key));
+};
+
+/**
+ * Determines if this navigation is adding default/initial parameters
+ * Returns true if:
+ * 1. We're staying on the same page (same pathname)
+ * 2. Either:
+ *    - Current URL has no params and target URL has params, or
+ *    - Target URL has new params that didn't exist in current URL
+ */
+export const isDefaultNavigation = (
+	currentUrl: URL,
+	targetUrl: URL,
+): boolean => {
+	// Different pathnames means it's not a default navigation
+	if (currentUrl.pathname !== targetUrl.pathname) {
+		return false;
+	}
+
+	const currentParams = new URLSearchParams(currentUrl.search);
+	const targetParams = new URLSearchParams(targetUrl.search);
+
+	// Case 1: Clean URL getting params for the first time
+	if (!currentParams.toString() && targetParams.toString()) {
+		return true;
+	}
+
+	// Case 2: Check for new params that didn't exist before
+	const currentKeys = new Set(currentParams.keys());
+	const targetKeys = new Set(targetParams.keys());
+
+	// Find keys that exist in target but not in current
+	const newKeys = [...targetKeys].filter((key) => !currentKeys.has(key));
+
+	return newKeys.length > 0;
+};

frontend/src/lib/compositeQuery/__tests__/serializer.test.ts

@@ -0,0 +1,51 @@
+import { initialQueriesMap } from 'constants/queryBuilder';
+import { COMPOSITE_QUERY_KEY } from 'lib/compositeQuery/types';
+import {
+	clearSerializedParams,
+	deserialize,
+	serialize,
+} from 'lib/compositeQuery/serializer';
+
+describe('composite query serializer', () => {
+	it('round-trips through serialize/deserialize', () => {
+		const query = initialQueriesMap.logs;
+		const decoded = deserialize(serialize(query));
+		expect(decoded?.builder.queryData[0].dataSource).toBe('logs');
+	});
+
+	it('returns null on corrupt input instead of throwing', () => {
+		const params = new URLSearchParams();
+		params.set(COMPOSITE_QUERY_KEY, '%7Bnot-json');
+		expect(deserialize(params)).toBeNull();
+	});
+
+	it('returns null for empty/missing value', () => {
+		const params = new URLSearchParams();
+		expect(deserialize(params)).toBeNull();
+	});
+
+	it('preserves id field through roundtrip', () => {
+		const query = { ...initialQueriesMap.metrics, id: 'test-query-uuid-123' };
+		const serialized = serialize(query);
+		const decoded = deserialize(serialized);
+		expect(decoded?.id).toBe('test-query-uuid-123');
+	});
+
+	it('clearSerializedParams purges every serialized key, leaving others intact', () => {
+		const params = serialize(initialQueriesMap.logs);
+		params.set('panelTypes', 'list');
+		clearSerializedParams(params);
+		expect(params.has(COMPOSITE_QUERY_KEY)).toBe(false);
+		expect(deserialize(params)).toBeNull();
+		expect(params.get('panelTypes')).toBe('list');
+	});
+
+	it('clearSerializedParams drops a corrupt legacy key via fallback', () => {
+		const params = new URLSearchParams();
+		params.set(COMPOSITE_QUERY_KEY, '%7Bnot-json');
+		params.set('panelTypes', 'list');
+		clearSerializedParams(params);
+		expect(params.has(COMPOSITE_QUERY_KEY)).toBe(false);
+		expect(params.get('panelTypes')).toBe('list');
+	});
+});

frontend/src/lib/compositeQuery/adapters/json/index.ts

@@ -0,0 +1,69 @@
+import {
+	convertAggregationToExpression,
+	convertFiltersToExpressionWithExistingQuery,
+	convertHavingToExpression,
+} from 'components/QueryBuilderV2/utils';
+import {
+	CompositeQueryAdapter,
+	COMPOSITE_QUERY_KEY,
+} from 'lib/compositeQuery/types';
+import { BaseAutocompleteData } from 'types/api/queryBuilder/queryAutocompleteResponse';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
+
+function migrateLegacyFormat(parsed: Query): Query {
+	if (!parsed?.builder?.queryData) {
+		return parsed;
+	}
+	const next = parsed;
+	next.builder.queryData = parsed.builder.queryData.map((query) => {
+		const existingExpression = query.filter?.expression || '';
+		const convertedQuery = { ...query };
+
+		const convertedFilter = convertFiltersToExpressionWithExistingQuery(
+			query.filters || { items: [], op: 'AND' },
+			existingExpression,
+		);
+		convertedQuery.filter = convertedFilter.filter;
+		convertedQuery.filters = convertedFilter.filters;
+
+		if (Array.isArray(query.having)) {
+			convertedQuery.having = convertHavingToExpression(query.having);
+		}
+
+		if (!query.aggregations && query.aggregateOperator) {
+			convertedQuery.aggregations = convertAggregationToExpression({
+				aggregateOperator: query.aggregateOperator,
+				aggregateAttribute: query.aggregateAttribute as BaseAutocompleteData,
+				dataSource: query.dataSource,
+				timeAggregation: query.timeAggregation,
+				spaceAggregation: query.spaceAggregation,
+				reduceTo: query.reduceTo,
+				temporality: query.temporality,
+				// eslint-disable-next-line @typescript-eslint/no-explicit-any
+			}) as any;
+		}
+		return convertedQuery;
+	});
+	return next;
+}
+
+export const jsonAdapter: CompositeQueryAdapter = {
+	name: 'json(legacy)',
+	encode: (query) => {
+		const params = new URLSearchParams();
+		params.set(COMPOSITE_QUERY_KEY, JSON.stringify(query));
+		return params;
+	},
+	matches: () => true,
+	decode: (params) => {
+		const raw = params.get(COMPOSITE_QUERY_KEY) ?? '';
+		let parsed: Query;
+
+		try {
+			parsed = JSON.parse(raw);
+		} catch (e) {
+			parsed = JSON.parse(decodeURIComponent(raw.replace(/\+/g, ' ')));
+		}
+		return migrateLegacyFormat(parsed);
+	},
+};

frontend/src/lib/compositeQuery/adapters/json/json.test.ts

@@ -0,0 +1,211 @@
+import { initialQueriesMap } from 'constants/queryBuilder';
+import { COMPOSITE_QUERY_KEY } from 'lib/compositeQuery/types';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
+
+import { jsonAdapter } from './index';
+
+const roundTrip = (query: Query): Query =>
+	jsonAdapter.decode(jsonAdapter.encode(query));
+
+describe('jsonAdapter', () => {
+	describe('round-trip', () => {
+		it.each(['metrics', 'logs', 'traces'] as const)(
+			'round-trips %s baseline preserving dataSource',
+			(source) => {
+				const query = initialQueriesMap[source];
+				const decoded = roundTrip(query);
+				expect(decoded.builder.queryData[0].dataSource).toBe(source);
+			},
+		);
+	});
+
+	describe('encoding', () => {
+		it('encodes using single URL encoding via URLSearchParams', () => {
+			const query = initialQueriesMap.logs;
+			const params = jsonAdapter.encode(query);
+			const raw = params.get(COMPOSITE_QUERY_KEY) ?? '';
+
+			// URLSearchParams.get() returns decoded value, so raw === JSON string
+			expect(raw).toBe(JSON.stringify(query));
+			expect(raw.startsWith('{')).toBe(true);
+
+			// Full URL shows single encoding
+			const fullUrl = params.toString();
+			expect(fullUrl).toContain('%7B'); // encoded {
+			expect(fullUrl).not.toContain('%257B'); // NOT double-encoded
+		});
+
+		it('decode handles single-encoded format (current)', () => {
+			const query = initialQueriesMap.logs;
+			const params = new URLSearchParams();
+			params.set(COMPOSITE_QUERY_KEY, JSON.stringify(query));
+
+			const decoded = jsonAdapter.decode(params);
+			expect(decoded.builder.queryData[0].dataSource).toBe('logs');
+		});
+	});
+
+	describe('legacy double-encoded fallback', () => {
+		it('decode handles double-encoded format (legacy URLs)', () => {
+			const query = initialQueriesMap.logs;
+			// Simulate legacy: JSON -> encodeURIComponent -> set as raw param
+			const doubleEncoded = encodeURIComponent(JSON.stringify(query));
+			const params = new URLSearchParams();
+			params.set(COMPOSITE_QUERY_KEY, doubleEncoded);
+
+			const decoded = jsonAdapter.decode(params);
+			expect(decoded.builder.queryData[0].dataSource).toBe('logs');
+		});
+
+		it('double-encoded with special chars decodes correctly', () => {
+			const queryWithSpecialChars = {
+				...initialQueriesMap.logs,
+				builder: {
+					...initialQueriesMap.logs.builder,
+					queryData: [
+						{
+							...initialQueriesMap.logs.builder.queryData[0],
+							filters: {
+								op: 'AND',
+								items: [
+									{
+										key: { key: 'message', dataType: 'string', type: 'tag' },
+										op: '=',
+										value: 'hello world & foo=bar',
+									},
+								],
+							},
+						},
+					],
+				},
+			};
+			const doubleEncoded = encodeURIComponent(
+				JSON.stringify(queryWithSpecialChars),
+			);
+			const params = new URLSearchParams();
+			params.set(COMPOSITE_QUERY_KEY, doubleEncoded);
+
+			const decoded = jsonAdapter.decode(params);
+			const filter = decoded.builder.queryData[0].filters?.items[0];
+			expect(filter?.value).toBe('hello world & foo=bar');
+		});
+	});
+
+	describe('plus-sign handling', () => {
+		it('plus signs in double-encoded URLs decode as spaces', () => {
+			// In URL encoding, + represents space. Legacy URLs may have this.
+			const query = { queryType: 'builder', test: 'hello world' };
+			// Manually create double-encoded with + for space
+			const jsonStr = JSON.stringify(query);
+			const encoded = encodeURIComponent(jsonStr).replace(/%20/g, '+');
+
+			const params = new URLSearchParams();
+			params.set(COMPOSITE_QUERY_KEY, encoded);
+
+			const decoded = jsonAdapter.decode(params) as any;
+			expect(decoded.test).toBe('hello world');
+		});
+
+		it('plus signs in filter values preserved after decode', () => {
+			// Value literally contains + (not space)
+			const queryWithPlus = {
+				...initialQueriesMap.logs,
+				builder: {
+					...initialQueriesMap.logs.builder,
+					queryData: [
+						{
+							...initialQueriesMap.logs.builder.queryData[0],
+							filters: {
+								op: 'AND',
+								items: [
+									{
+										key: { key: 'expr', dataType: 'string', type: 'tag' },
+										op: '=',
+										value: '1+2=3',
+									},
+								],
+							},
+						},
+					],
+				},
+			};
+
+			// Current format (single encode) - + becomes %2B
+			const params = jsonAdapter.encode(queryWithPlus as Query);
+			const decoded = jsonAdapter.decode(params);
+			expect(decoded.builder.queryData[0].filters?.items[0]?.value).toBe('1+2=3');
+		});
+
+		it('legacy double-encoded + in values preserved', () => {
+			const queryWithPlus = {
+				queryType: 'builder',
+				builder: {
+					queryData: [
+						{
+							dataSource: 'logs',
+							queryName: 'A',
+							filters: {
+								op: 'AND',
+								items: [{ key: { key: 'x' }, op: '=', value: 'a+b' }],
+							},
+						},
+					],
+					queryFormulas: [],
+				},
+				promql: [],
+				clickhouse_sql: [],
+				id: 'x',
+				unit: '',
+			};
+			// Double encode: + in JSON becomes %2B, then %252B
+			const doubleEncoded = encodeURIComponent(JSON.stringify(queryWithPlus));
+			const params = new URLSearchParams();
+			params.set(COMPOSITE_QUERY_KEY, doubleEncoded);
+
+			const decoded = jsonAdapter.decode(params);
+			expect(decoded.builder.queryData[0].filters?.items[0]?.value).toBe('a+b');
+		});
+	});
+
+	describe('tag matching', () => {
+		it('matches any value (catch-all fallback)', () => {
+			const params1 = new URLSearchParams();
+			params1.set(COMPOSITE_QUERY_KEY, '%7B%22queryType%22%3A%22builder%22%7D');
+			expect(jsonAdapter.matches(params1)).toBe(true);
+
+			const params2 = new URLSearchParams();
+			params2.set(COMPOSITE_QUERY_KEY, 'z1~abc');
+			expect(jsonAdapter.matches(params2)).toBe(true);
+		});
+	});
+
+	describe('migration', () => {
+		it('migrates old format (filters -> filter.expression)', () => {
+			const legacy = {
+				queryType: 'builder',
+				builder: {
+					queryData: [
+						{
+							dataSource: 'logs',
+							queryName: 'A',
+							filters: { op: 'AND', items: [] },
+							aggregateOperator: 'count',
+							aggregateAttribute: { key: '', dataType: '', type: '' },
+						},
+					],
+					queryFormulas: [],
+					queryTraceOperator: [],
+				},
+				promql: [],
+				clickhouse_sql: [],
+				id: 'x',
+				unit: '',
+			};
+			const params = new URLSearchParams();
+			params.set(COMPOSITE_QUERY_KEY, JSON.stringify(legacy));
+			const decoded = jsonAdapter.decode(params);
+			expect(decoded.builder.queryData[0].filter).toBeDefined();
+			expect(decoded.builder.queryData[0].aggregations).toBeDefined();
+		});
+	});
+});

frontend/src/lib/compositeQuery/serializer.ts

@@ -0,0 +1,79 @@
+import { jsonAdapter } from 'lib/compositeQuery/adapters/json';
+import {
+	COMPOSITE_QUERY_KEY,
+	CompositeQueryAdapter,
+} from 'lib/compositeQuery/types';
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
+
+// Order matters for decode: most-specific (tagged) adapters first
+const ADAPTERS: CompositeQueryAdapter[] = [jsonAdapter];
+
+// Pick the adapter that owns a given URL. json's `matches` is always true, so
+// it serves as the final fallback when no tagged adapter claims the params.
+function adapterFor(params: URLSearchParams): CompositeQueryAdapter {
+	return ADAPTERS.find((adapter) => adapter.matches(params)) ?? jsonAdapter;
+}
+
+/**
+ * Encode a query to the shortest available URLSearchParams.
+ */
+export function serialize(query: Query): URLSearchParams {
+	return ADAPTERS[0].encode(query);
+}
+
+/**
+ * Decode URLSearchParams back to a Query. Total: returns null on any failure.
+ */
+export function deserialize(params: URLSearchParams): Query | null {
+	const hasParams = Array.from(params.keys()).length > 0;
+	if (!hasParams) {
+		return null;
+	}
+	try {
+		return adapterFor(params).decode(params);
+	} catch {
+		return null;
+	}
+}
+
+/**
+ * Apply all params from source into target URLSearchParams.
+ */
+export function applySerializedParams(
+	source: URLSearchParams,
+	target: URLSearchParams,
+): void {
+	source.forEach((value, key) => target.set(key, value));
+}
+
+/**
+ * Remove every serialized-query param from target URLSearchParams. Use instead
+ * of `target.delete('compositeQuery')` so a stale query is fully purged even
+ * for adapters that explode a query into many content-dependent keys (e.g.
+ * `query0.ds`, `query0.fl.it.0.key.key`) which can't be listed statically.
+ *
+ * Keys are discovered by round-trip: decode the current params with their
+ * owning adapter, re-encode, then delete exactly the keys encoding produces.
+ * If the params don't decode (absent/corrupt), fall back to dropping the legacy
+ * single key so a stale `compositeQuery` is still cleared.
+ */
+export function clearSerializedParams(target: URLSearchParams): void {
+	const adapter = adapterFor(target);
+	try {
+		adapter.encode(adapter.decode(target)).forEach((_value, key) => {
+			target.delete(key);
+		});
+	} catch {
+		target.delete(COMPOSITE_QUERY_KEY);
+	}
+}
+
+/**
+ * Serialize a query to a plain record of all URL params it produces. Use when
+ * building a query-param object manually (e.g. for `createQueryParams`), so the
+ * call site carries every param the adapter emits — not just `compositeQuery`.
+ * Spread it: `{ ...serializeToParams(query), startTime, endTime }`.
+ */
+export function serializeToParams(query: Query): Record<string, string> {
+	return Object.fromEntries(serialize(query));
+}

frontend/src/lib/compositeQuery/types.ts

@@ -0,0 +1,15 @@
+import { Query } from 'types/api/queryBuilder/queryBuilderData';
+
+export const COMPOSITE_QUERY_KEY = 'compositeQuery';
+
+/**
+ * A serialization tier. `encode` returns URLSearchParams (default key =
+ * `compositeQuery`). `matches` checks if params belong to this adapter.
+ * `decode` receives URLSearchParams and returns Query.
+ */
+export interface CompositeQueryAdapter {
+	readonly name: string;
+	encode(query: Query): URLSearchParams;
+	matches(params: URLSearchParams): boolean;
+	decode(params: URLSearchParams): Query;
+}

frontend/src/lib/uPlotV2/components/Tooltip/__tests__/Tooltip.test.tsx

@@ -177,7 +177,8 @@ describe('Tooltip', () => {
 		renderTooltip({ uPlotInstance, content });
 
 		const list = screen.getByTestId('uplot-tooltip-list');
-		expect(list).toHaveStyle({ height: '200px' });
+		// Measured height (200) + the scroll viewport's vertical padding (16)
+		expect(list).toHaveStyle({ height: '216px' });
 	});
 
 	it('sets tooltip list height based on content length when Virtuoso reports 0 height', () => {
@@ -188,8 +189,8 @@ describe('Tooltip', () => {
 		renderTooltip({ uPlotInstance, content });
 
 		const list = screen.getByTestId('uplot-tooltip-list');
-		// Falls back to content length: 2 items * 38px = 76px
-		expect(list).toHaveStyle({ height: '76px' });
+		// Falls back to content length (2 * 38 = 76) + vertical padding (16) = 92px
+		expect(list).toHaveStyle({ height: '92px' });
 	});
 });
 

frontend/src/lib/uPlotV2/components/Tooltip/components/TooltipList/TooltipList.tsx

@@ -13,6 +13,11 @@ import Styles from './TooltipList.module.scss';
 // Fallback per-item height before Virtuoso reports the real total.
 const TOOLTIP_ITEM_HEIGHT = 38;
 const LIST_MAX_HEIGHT = 300;
+// Vertical padding (spacing-4 top + bottom) the SCSS applies to the scroll
+// viewport. Virtuoso's reported height covers only the items, so it must be
+// added back — otherwise the box is short by this amount, clipping the last
+// row and showing a scrollbar even when every row would fit.
+const LIST_VERTICAL_PADDING = 16;
 
 interface TooltipListProps {
 	id: string;
@@ -30,13 +35,13 @@ export default function TooltipList({
 	// Use the measured height from Virtuoso when available; fall back to a
 	// per-item estimate on first render. Math.ceil prevents a 1 px
 	// subpixel rounding gap from triggering a spurious scrollbar.
-	const height = useMemo(
-		() =>
-			totalListHeight > 0
-				? Math.ceil(Math.min(totalListHeight, LIST_MAX_HEIGHT))
-				: Math.min(content.length * TOOLTIP_ITEM_HEIGHT, LIST_MAX_HEIGHT),
-		[totalListHeight, content.length],
-	);
+	const height = useMemo(() => {
+		const contentHeight =
+			totalListHeight > 0 ? totalListHeight : content.length * TOOLTIP_ITEM_HEIGHT;
+		return Math.ceil(
+			Math.min(contentHeight + LIST_VERTICAL_PADDING, LIST_MAX_HEIGHT),
+		);
+	}, [totalListHeight, content.length]);
 
 	const handleScroll = useCallback(() => {
 		if (!isScrollEventTriggered.current) {

frontend/src/pages/ChannelsEdit/index.tsx

@@ -2,6 +2,7 @@
 
 import { useTranslation } from 'react-i18next';
 import { useQuery } from 'react-query';
+import { matchPath, useLocation } from 'react-router-dom';
 import { Typography } from '@signozhq/ui/typography';
 import get from 'api/channels/get';
 import AlertBreadcrumb from 'components/AlertBreadcrumb';
@@ -24,10 +25,10 @@ import './ChannelsEdit.styles.scss';
 function ChannelsEdit(): JSX.Element {
 	const { t } = useTranslation();
 
-	// Extract channelId from URL pathname
-	const { pathname } = window.location;
-	const channelIdMatch = pathname.match(/\/alerts\/channels\/edit\/([^/]+)/);
-	const channelId = channelIdMatch ? channelIdMatch[1] : undefined;
+	const { pathname } = useLocation();
+	const channelId = matchPath<{ channelId: string }>(pathname, {
+		path: ROUTES.CHANNELS_EDIT,
+	})?.params?.channelId;
 
 	const { isFetching, isError, data, error } = useQuery<
 		SuccessResponseV2<Channels>,
@@ -147,6 +148,7 @@ function ChannelsEdit(): JSX.Element {
 			<div className="edit-alert-channels-container">
 				<EditAlertChannels
 					{...{
+						channelId: channelId || '',
 						initialValue: {
 							...target.channel,
 							type: target.type,

frontend/src/pages/EditRules/index.tsx

@@ -15,6 +15,7 @@ import EditRulesContainer from 'container/EditRules';
 import { useNotifications } from 'hooks/useNotifications';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
+import { clearSerializedParams } from 'lib/compositeQuery/serializer';
 import history from 'lib/history';
 import {
 	NEW_ALERT_SCHEMA_VERSION,
@@ -49,7 +50,7 @@ function EditRules(): JSX.Element {
 	const { notifications } = useNotifications();
 
 	const clickHandler = (): void => {
-		params.delete(QueryParams.compositeQuery);
+		clearSerializedParams(params);
 		params.delete(QueryParams.panelTypes);
 		params.delete(QueryParams.ruleId);
 		params.delete(QueryParams.relativeTime);

frontend/src/pages/TraceDetailsV3/SpanDetailsPanel/SpanDetailsPanel.tsx

@@ -28,6 +28,10 @@ import ROUTES from 'constants/routes';
 import InfraMetrics from 'container/LogDetailedView/InfraMetrics/InfraMetrics';
 import { getEmptyLogsListConfig } from 'container/LogsExplorerList/utils';
 import dayjs from 'dayjs';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import {
 	TraceDetailEventKeys,
 	TraceDetailEvents,
@@ -246,7 +250,7 @@ function SpanDetailsContent({
 		};
 
 		const searchParams = new URLSearchParams();
-		searchParams.set(QueryParams.compositeQuery, JSON.stringify(compositeQuery));
+		applySerializedParams(serialize(compositeQuery as any), searchParams);
 		searchParams.set(QueryParams.startTime, startTimeMs.toString());
 		searchParams.set(QueryParams.endTime, endTimeMs.toString());
 

frontend/src/pages/TraceDetailsV3/SpanDetailsPanel/SpanLogs/SpanLogs.tsx

@@ -18,6 +18,7 @@ import { LogsLoading } from 'container/LogsLoading/LogsLoading';
 import { FontSize } from 'container/OptionsMenu/types';
 import { getOperatorValue } from 'container/QueryBuilder/filters/QueryBuilderSearch/utils';
 import { useQueryBuilder } from 'hooks/queryBuilder/useQueryBuilder';
+import { serializeToParams } from 'lib/compositeQuery/serializer';
 import createQueryParams from 'lib/createQueryParams';
 import { Compass } from '@signozhq/icons';
 import { ILog } from 'types/api/logs/log';
@@ -138,7 +139,7 @@ function SpanLogs({
 				[QueryParams.activeLogId]: `"${log.id}"`,
 				[QueryParams.startTime]: timeRange.startTime.toString(),
 				[QueryParams.endTime]: timeRange.endTime.toString(),
-				[QueryParams.compositeQuery]: JSON.stringify(updatedQuery),
+				...serializeToParams(updatedQuery),
 			};
 
 			const url = `${ROUTES.LOGS_EXPLORER}?${createQueryParams(queryParams)}`;

frontend/src/providers/QueryBuilder.tsx

@@ -38,6 +38,10 @@ import { useGetCompositeQueryParam } from 'hooks/queryBuilder/useGetCompositeQue
 import { updateStepInterval } from 'hooks/queryBuilder/useStepInterval';
 import { useSafeNavigate } from 'hooks/useSafeNavigate';
 import useUrlQuery from 'hooks/useUrlQuery';
+import {
+	applySerializedParams,
+	serialize,
+} from 'lib/compositeQuery/serializer';
 import { createIdFromObjectFields } from 'lib/createIdFromObjectFields';
 import { createNewBuilderItemName } from 'lib/newQueryBuilder/createNewBuilderItemName';
 import { getOperatorsBySourceAndPanelType } from 'lib/newQueryBuilder/getOperatorsBySourceAndPanelType';
@@ -990,10 +994,7 @@ export function QueryBuilderProvider({
 				);
 			}
 
-			urlQuery.set(
-				QueryParams.compositeQuery,
-				encodeURIComponent(JSON.stringify(currentGeneratedQuery)),
-			);
+			applySerializedParams(serialize(currentGeneratedQuery), urlQuery);
 
 			if (searchParams) {
 				Object.keys(searchParams).forEach((param) =>

frontend/src/utils/dashboard/generateExportToDashboardLink.ts

@@ -2,6 +2,7 @@ import { generatePath } from 'react-router-dom';
 import { QueryParams } from 'constants/query';
 import { PANEL_TYPES } from 'constants/queryBuilder';
 import ROUTES from 'constants/routes';
+import { serialize } from 'lib/compositeQuery/serializer';
 import { Query } from 'types/api/queryBuilder/queryBuilderData';
 
 type GenerateExportToDashboardLinkParams = {
@@ -21,6 +22,4 @@ export const generateExportToDashboardLink = ({
 		dashboardId,
 	})}/new?${QueryParams.graphType}=${panelType}&${
 		QueryParams.widgetId
-	}=${widgetId}&${QueryParams.compositeQuery}=${encodeURIComponent(
-		JSON.stringify(query),
-	)}`;
+	}=${widgetId}&${serialize(query).toString()}`;

pkg/http/render/render.go

@@ -130,6 +130,7 @@ func Error(rw http.ResponseWriter, cause error) {
 		rw.Header().Set("Retry-After", strconv.Itoa(int(math.Ceil(d.Seconds()))))
 	}
 
+	rw.Header().Set("Content-Type", "application/json")
 	rw.WriteHeader(httpCode)
 	_, _ = rw.Write(body)
 }

pkg/types/authtypes/role.go

@@ -221,8 +221,8 @@ func (role *PostableRole) UnmarshalJSON(data []byte) error {
 
 func (role *UpdatableRole) UnmarshalJSON(data []byte) error {
 	shadow := struct {
-		Description       *string           `json:"description"`
-		TransactionGroups TransactionGroups `json:"transactionGroups"`
+		Description       *string          `json:"description"`
+		TransactionGroups *json.RawMessage `json:"transactionGroups"`
 	}{}
 
 	if err := json.Unmarshal(data, &shadow); err != nil {
@@ -237,8 +237,13 @@ func (role *UpdatableRole) UnmarshalJSON(data []byte) error {
 		return errors.New(errors.TypeInvalidInput, ErrCodeRoleInvalidInput, "transactionGroups is required").WithAdditional("send an empty array to clear the role's transaction groups")
 	}
 
+	transactionGroups, err := NewTransactionGroups(*shadow.TransactionGroups)
+	if err != nil {
+		return err
+	}
+
 	role.Description = *shadow.Description
-	role.TransactionGroups = shadow.TransactionGroups
+	role.TransactionGroups = transactionGroups
 	return nil
 }