diff --git a/src/platform/packages/shared/kbn-es-query-server/src/stored_filter.ts b/src/platform/packages/shared/kbn-es-query-server/src/stored_filter.ts
index 892bdbcdf68da..15f93ee4e8f65 100644
--- a/src/platform/packages/shared/kbn-es-query-server/src/stored_filter.ts
+++ b/src/platform/packages/shared/kbn-es-query-server/src/stored_filter.ts
@@ -44,7 +44,8 @@ export const storedFilterMetaSchema = schema.object(
     // This would require a more complex schema definition that can handle recursive types.
     // For now, we use `schema.any()` to allow flexibility in the params field.
     params: schema.maybe(schema.any()),
-    value: schema.maybe(schema.string()),
+    // Typing as any since value is undocumented subset of FilterMetaParams
+    value: schema.maybe(schema.any()),
   },
   { unknowns: 'allow' }
 );
diff --git a/src/platform/packages/shared/kbn-es-query/src/filters/build_filters/types.ts b/src/platform/packages/shared/kbn-es-query/src/filters/build_filters/types.ts
index f67a51342333e..742730a33cb69 100644
--- a/src/platform/packages/shared/kbn-es-query/src/filters/build_filters/types.ts
+++ b/src/platform/packages/shared/kbn-es-query/src/filters/build_filters/types.ts
@@ -10,7 +10,12 @@
 import type { FilterStateStore } from '@kbn/es-query-constants';
 import type { ExistsFilter } from './exists_filter';
 import type { PhrasesFilter, PhrasesFilterMeta } from './phrases_filter';
-import type { PhraseFilter, PhraseFilterMeta, PhraseFilterMetaParams } from './phrase_filter';
+import type {
+  PhraseFilter,
+  PhraseFilterMeta,
+  PhraseFilterMetaParams,
+  PhraseFilterValue,
+} from './phrase_filter';
 import type { RangeFilter, RangeFilterMeta, RangeFilterParams } from './range_filter';
 import type { MatchAllFilter, MatchAllFilterMeta } from './match_all_filter';
 
@@ -73,7 +78,7 @@ export type FilterMeta = {
   type?: string;
   key?: string;
   params?: FilterMetaParams;
-  value?: string;
+  value?: string | RangeFilterParams | PhraseFilterValue[];
 };
 
 // eslint-disable-next-line @typescript-eslint/consistent-type-definitions
diff --git a/src/platform/plugins/shared/data/public/query/filter_manager/lib/get_display_value.ts b/src/platform/plugins/shared/data/public/query/filter_manager/lib/get_display_value.ts
index 90278bad5fb73..f4a1da093ef1f 100644
--- a/src/platform/plugins/shared/data/public/query/filter_manager/lib/get_display_value.ts
+++ b/src/platform/plugins/shared/data/public/query/filter_manager/lib/get_display_value.ts
@@ -70,5 +70,5 @@ export function getDisplayValueFromFilter(filter: Filter, indexPatterns: DataVie
     return getPhrasesDisplayValue(filter, valueFormatter);
   } else if (isRangeFilter(filter) || isScriptedRangeFilter(filter)) {
     return getRangeDisplayValue(filter, valueFormatter);
-  } else return filter.meta.value ?? '';
+  } else return String(filter.meta.value ?? '');
 }
diff --git a/src/platform/plugins/shared/data/server/query/route_types.ts b/src/platform/plugins/shared/data/server/query/route_types.ts
index 646b0ee54f305..c60e8ce8707de 100644
--- a/src/platform/plugins/shared/data/server/query/route_types.ts
+++ b/src/platform/plugins/shared/data/server/query/route_types.ts
@@ -89,7 +89,7 @@ type FilterMetaRestResponse = {
   type?: string;
   key?: string;
   params?: FilterMetaParamsRestResponse;
-  value?: string;
+  value?: string | RangeFilterParamsRestResponse | PhraseFilterValue[];
 };
 
 type FilterStateStoreRestResponse = 'appState' | 'globalState';
diff --git a/x-pack/platform/plugins/shared/alerting/server/rules_client/lib/add_generated_action_values.ts b/x-pack/platform/plugins/shared/alerting/server/rules_client/lib/add_generated_action_values.ts
index 77051c7330d7a..ad99855f0f112 100644
--- a/x-pack/platform/plugins/shared/alerting/server/rules_client/lib/add_generated_action_values.ts
+++ b/x-pack/platform/plugins/shared/alerting/server/rules_client/lib/add_generated_action_values.ts
@@ -17,6 +17,7 @@ import type {
   RulesClientContext,
 } from '..';
 import { getEsQueryConfig } from '../../lib/get_es_query_config';
+import type { RawRuleAlertsFilter } from '../../types';
 
 export async function addGeneratedActionValues(
   actions: NormalizedAlertAction[] = [],
@@ -55,7 +56,7 @@ export async function addGeneratedActionValues(
                       dsl: generateDSL(alertsFilter.query.kql, alertsFilter.query.filters) ?? '',
                     }
                   : undefined,
-              },
+              } as RawRuleAlertsFilter,
             }
           : {}),
       };