diff --git a/packages/core/src/common/k8s-api/endpoints/metrics.api/request-metrics.injectable.ts b/packages/core/src/common/k8s-api/endpoints/metrics.api/request-metrics.injectable.ts
index e83c52b9aa..08ed4c211a 100644
--- a/packages/core/src/common/k8s-api/endpoints/metrics.api/request-metrics.injectable.ts
+++ b/packages/core/src/common/k8s-api/endpoints/metrics.api/request-metrics.injectable.ts
@@ -37,18 +37,17 @@ export interface RequestMetricsParams {
   namespace?: string;
 }
 
-export interface RequestMetrics {
-  (query: string, params?: RequestMetricsParams): Promise<MetricData>;
-  (query: string[], params?: RequestMetricsParams): Promise<MetricData[]>;
-  <Keys extends string>(query: Record<Keys, Partial<Record<string, string>>>, params?: RequestMetricsParams): Promise<Record<Keys, MetricData>>;
-}
+export type RequestMetrics = ReturnType<typeof requestMetricsInjectable["instantiate"]>;
 
 const requestMetricsInjectable = getInjectable({
   id: "request-metrics",
   instantiate: (di) => {
     const apiBase = di.inject(apiBaseInjectable);
 
-    return (async (query: object, params: RequestMetricsParams = {}) => {
+    function requestMetrics(query: string, params?: RequestMetricsParams): Promise<MetricData>;
+    function requestMetrics(query: string[], params?: RequestMetricsParams): Promise<MetricData[]>;
+    function requestMetrics<Keys extends string>(query: Record<Keys, Partial<Record<string, string>>>, params?: RequestMetricsParams): Promise<Record<Keys, MetricData>>;
+    async function requestMetrics(query: string | string[] | Partial<Record<string, Partial<Record<string, string>>>>, params: RequestMetricsParams = {}): Promise<MetricData | MetricData[] | Partial<Record<string, MetricData>>> {
       const { range = 3600, step = 60, namespace } = params;
       let { start, end } = params;
 
@@ -66,7 +65,9 @@ const requestMetricsInjectable = getInjectable({
           "kubernetes_namespace": namespace,
         },
       });
-    }) as RequestMetrics;
+    }
+
+    return requestMetrics;
   },
 });
 
diff --git a/packages/core/src/extensions/renderer-api/k8s-api.ts b/packages/core/src/extensions/renderer-api/k8s-api.ts
index 019c8805ad..1dfdc0e075 100644
--- a/packages/core/src/extensions/renderer-api/k8s-api.ts
+++ b/packages/core/src/extensions/renderer-api/k8s-api.ts
@@ -38,6 +38,8 @@ import kubeEventApiInjectable from "../../common/k8s-api/endpoints/events.api.in
 import roleBindingApiInjectable from "../../common/k8s-api/endpoints/role-binding.api.injectable";
 import customResourceDefinitionApiInjectable from "../../common/k8s-api/endpoints/custom-resource-definition.api.injectable";
 import { shouldShowResourceInjectionToken } from "../../common/cluster-store/allowed-resources-injection-token";
+import { asLegacyGlobalFunctionForExtensionApi } from "../as-legacy-globals-for-extension-api/as-legacy-global-function-for-extension-api";
+import requestMetricsInjectable from "../../common/k8s-api/endpoints/metrics.api/request-metrics.injectable";
 
 export function isAllowedResource(resources: KubeResource | KubeResource[]) {
   const di = getLegacyGlobalDiForExtensionApi();
@@ -93,6 +95,17 @@ export const crdApi = asLegacyGlobalForExtensionApi(customResourceDefinitionApiI
 
 export * from "../common-api/k8s-api";
 
+export const requestMetrics = asLegacyGlobalFunctionForExtensionApi(requestMetricsInjectable);
+
+export type {
+  RequestMetrics,
+  RequestMetricsParams,
+} from "../../common/k8s-api/endpoints/metrics.api/request-metrics.injectable";
+export type {
+  MetricData,
+  MetricResult,
+} from "../../common/k8s-api/endpoints/metrics.api";
+
 export {
   KubeObjectStatusLevel,
   type KubeObjectStatus,