diff --git a/src/lib/sidebar.ts b/src/lib/sidebar.ts
index a8f6536..1475c5b 100644
--- a/src/lib/sidebar.ts
+++ b/src/lib/sidebar.ts
@@ -15,9 +15,23 @@ export interface ResearchListItem extends ResearchSummary {
 
 const HISTORY_LIMIT = 50;
 
+interface ResearchListResponse {
+    items: Array<{
+        research_id: string;
+        query: string;
+        state: string;
+        created_at: string;
+    }>;
+}
+
 export async function loadResearchHistory(apiKey: string): Promise<ResearchSummary[]> {
-    const response = await apiGet<{ items: ResearchSummary[] }>('/v1/research', { apiKey });
-    const list = response.items;
+    const response = await apiGet<ResearchListResponse>('/v1/research', { apiKey });
+    const list = response.items.map(item => ({
+        id: item.research_id,
+        query: item.query,
+        status: item.state,
+        created_at: item.created_at,
+    }));
     // Sort descending by created_at (newest first), limit to HISTORY_LIMIT
     const sorted = list
         .slice()