diff --git a/frontend/src/api/index.ts b/frontend/src/api/index.ts
index 92af193..e07c536 100644
--- a/frontend/src/api/index.ts
+++ b/frontend/src/api/index.ts
@@ -239,4 +239,21 @@ export interface SystemConfig {
   document_metadata_path: string;
 }
 
+export interface ServiceHealth {
+  status: 'ok' | 'error' | 'unknown';
+  error?: string;
+}
+
+export interface SystemHealth {
+  milvus: ServiceHealth & {
+    connected?: boolean;
+    collection_name?: string;
+    num_entities?: number;
+  };
+  minio: ServiceHealth & { connected?: boolean };
+  bm25: { available: boolean };
+  reranker: { enabled: boolean; model?: string | null };
+  sessions: { active: number; max: number };
+}
+
 export { API_BASE_URL };
diff --git a/frontend/src/api/status.ts b/frontend/src/api/status.ts
index 87fbcd4..d81026a 100644
--- a/frontend/src/api/status.ts
+++ b/frontend/src/api/status.ts
@@ -1,4 +1,4 @@
-import { fetchAPI, type SystemConfig, type SystemStats } from './index';
+import { fetchAPI, type SystemConfig, type SystemHealth, type SystemStats } from './index';
 
 export async function getSystemStats(): Promise<SystemStats> {
   return fetchAPI<SystemStats>('/status/stats');
@@ -8,8 +8,8 @@ export async function getSystemConfig(): Promise<SystemConfig> {
   return fetchAPI<SystemConfig>('/status/config');
 }
 
-export async function getMilvusHealth(): Promise<{ connected: boolean; collections: string[] }> {
-  return fetchAPI('/status/milvus/health');
+export async function getSystemHealth(): Promise<SystemHealth> {
+  return fetchAPI<SystemHealth>('/status/health');
 }
 
-export type { SystemConfig, SystemStats };
+export type { SystemConfig, SystemHealth, SystemStats };