add a FE feature toggle to get a 'compact' response from the /rules endpoint

packages/grafana-data/src/types/featureToggles.gen.ts

@@ -422,6 +422,11 @@ export interface FeatureToggles {
   */
   alertingQueryOptimization?: boolean;
   /**
+  * Returns compact API responses for alert rules list, reducing payload size by omitting the query, notification settings, and metadata
+  * @default false
+  */
+  alertingCompactRulesResponse?: boolean;
+  /**
   * Distributes alert rule evaluations more evenly over time, including spreading out rules within the same group. Disables sequential evaluation if enabled.
   */
   jitterAlertRulesWithinGroups?: boolean;

pkg/services/featuremgmt/registry.go

@@ -686,6 +686,13 @@ var (
 			Owner:       grafanaAlertingSquad,
 			Expression:  "false",
 		},
+		{
+			Name:        "alertingCompactRulesResponse",
+			Description: "Returns compact API responses for alert rules list, reducing payload size by omitting the query, notification settings, and metadata",
+			Stage:       FeatureStageExperimental,
+			Owner:       grafanaAlertingSquad,
+			Expression:  "false",
+		},
 		{
 			Name:            "jitterAlertRulesWithinGroups",
 			Description:     "Distributes alert rule evaluations more evenly over time, including spreading out rules within the same group. Disables sequential evaluation if enabled.",

pkg/services/featuremgmt/toggles_gen.csv

@@ -95,6 +95,7 @@ tableSharedCrosshair,experimental,@grafana/dataviz-squad,false,false,true
 kubernetesFeatureToggles,experimental,@grafana/grafana-operator-experience-squad,false,false,true
 cloudRBACRoles,preview,@grafana/identity-access-team,false,true,false
 alertingQueryOptimization,GA,@grafana/alerting-squad,false,false,false
+alertingCompactRulesResponse,experimental,@grafana/alerting-squad,false,false,false
 jitterAlertRulesWithinGroups,preview,@grafana/alerting-squad,false,true,false
 secretsManagementAppPlatform,experimental,@grafana/grafana-operator-experience-squad,false,false,false
 secretsManagementAppPlatformUI,experimental,@grafana/grafana-operator-experience-squad,false,false,false

pkg/services/featuremgmt/toggles_gen.go

@@ -279,6 +279,10 @@ const (
 	// Optimizes eligible queries in order to reduce load on datasources
 	FlagAlertingQueryOptimization = "alertingQueryOptimization"
 
+	// FlagAlertingCompactRulesResponse
+	// Returns compact API responses for alert rules list, reducing payload size by omitting the query, notification settings, and metadata
+	FlagAlertingCompactRulesResponse = "alertingCompactRulesResponse"
+
 	// FlagJitterAlertRulesWithinGroups
 	// Distributes alert rule evaluations more evenly over time, including spreading out rules within the same group. Disables sequential evaluation if enabled.
 	FlagJitterAlertRulesWithinGroups = "jitterAlertRulesWithinGroups"

pkg/services/featuremgmt/toggles_gen.json

@@ -195,6 +195,22 @@
         "codeowner": "@grafana/alerting-squad"
       }
     },
+    {
+      "metadata": {
+        "name": "alertingCompactRulesResponse",
+        "resourceVersion": "1765802340688",
+        "creationTimestamp": "2025-12-15T12:24:06Z",
+        "annotations": {
+          "grafana.app/updatedTimestamp": "2025-12-15 12:39:00.688866597 +0000 UTC"
+        }
+      },
+      "spec": {
+        "description": "Returns compact API responses for alert rules list, reducing payload size by omitting the query, notification settings, and metadata",
+        "stage": "experimental",
+        "codeowner": "@grafana/alerting-squad",
+        "expression": "false"
+      }
+    },
     {
       "metadata": {
         "name": "alertingDisableSendAlertsExternal",

public/app/features/alerting/unified/api/prometheusApi.ts

@@ -47,6 +47,7 @@ export type GrafanaPromRulesOptions = Omit<PromRulesOptions, 'ruleSource' | 'nam
   title?: string;
   searchGroupName?: string;
   type?: 'alerting' | 'recording';
+  compact?: boolean;
 };
 
 export const prometheusApi = alertingApi.injectEndpoints({
@@ -102,6 +103,7 @@ export const prometheusApi = alertingApi.injectEndpoints({
         datasources,
         searchGroupName,
         dashboardUid,
+        compact,
       }) => ({
         url: `api/prometheus/grafana/api/v1/rules`,
         params: {
@@ -120,6 +122,7 @@ export const prometheusApi = alertingApi.injectEndpoints({
           'search.rule_name': title,
           'search.rule_group': searchGroupName,
           dashboard_uid: dashboardUid,
+          compact: compact,
         },
       }),
       providesTags: (_result, _error, { folderUid, groupName, ruleName }) => {

public/app/features/alerting/unified/rule-list/GrafanaGroupLoader.tsx

@@ -3,6 +3,7 @@ import { useMemo } from 'react';
 
 import { GrafanaTheme2 } from '@grafana/data';
 import { t } from '@grafana/i18n';
+import { config } from '@grafana/runtime';
 import { Alert, Stack, useStyles2 } from '@grafana/ui';
 import { GrafanaRuleGroupIdentifier } from 'app/types/unified-alerting';
 
@@ -44,6 +45,7 @@ export function GrafanaGroupLoader({
       folderUid: groupIdentifier.namespace.uid,
       groupName: groupIdentifier.groupName,
       limitAlerts: 0,
+      compact: config.featureToggles.alertingCompactRulesResponse,
     },
     { pollingInterval: RULE_LIST_POLL_INTERVAL_MS }
   );

public/app/features/alerting/unified/rule-list/hooks/prometheusGroupsGenerator.ts

@@ -1,6 +1,7 @@
 import { useCallback } from 'react';
 import { MergeExclusive } from 'type-fest';
 
+import { config } from '@grafana/runtime';
 import { DataSourceRulesSourceIdentifier, RuleHealth } from 'app/types/unified-alerting';
 import { PromAlertingRuleState, PromRuleGroupDTO } from 'app/types/unified-alerting-dto';
 
@@ -76,6 +77,7 @@ export function useGrafanaGroupsGenerator(hookOptions: UseGeneratorHookOptions =
         ...fetchOptions,
         limitAlerts: hookOptions.limitAlerts,
         ...fetchOptions.filter,
+        compact: config.featureToggles.alertingCompactRulesResponse,
       }).unwrap();
 
       if (hookOptions.populateCache) {