diff --git a/app/api/documents.py b/app/api/documents.py
index 701f664..ef19327 100644
--- a/app/api/documents.py
+++ b/app/api/documents.py
@@ -147,6 +147,7 @@ async def list_documents(
     sub_group: str | None = None,
     source: str | None = None,
     format: str | None = None,
+    review_status: str | None = Query(None, description="pending | approved | rejected"),
 ):
     """문서 목록 조회 (페이지네이션 + 필터, 뉴스 제외)"""
     query = select(Document).where(Document.deleted_at == None, Document.source_channel != "news")
@@ -158,6 +159,8 @@ async def list_documents(
         query = query.where(Document.source_channel == source)
     if format:
         query = query.where(Document.file_format == format)
+    if review_status:
+        query = query.where(Document.review_status == review_status)
 
     # 전체 건수
     count_query = select(func.count()).select_from(query.subquery())
diff --git a/frontend/src/routes/inbox/+page.svelte b/frontend/src/routes/inbox/+page.svelte
index 4c2156d..ff19ba2 100644
--- a/frontend/src/routes/inbox/+page.svelte
+++ b/frontend/src/routes/inbox/+page.svelte
@@ -59,9 +59,9 @@
   async function loadInbox() {
     loading = true;
     try {
-      // TODO(backend): /documents/?review_status=pending 서버 필터 지원 시 page_size 축소
-      const data = await api('/documents/?page_size=200');
-      documents = (data.items || []).filter((d) => d.review_status === 'pending');
+      // 서버 필터 review_status=pending 적용 — page_size 100 이내 안전
+      const data = await api('/documents/?review_status=pending&page_size=100');
+      documents = data.items || [];
     } catch (err) {
       addToast('error', 'Inbox 로딩 실패');
     } finally {