diff --git a/agent-office/app/test_db.py b/agent-office/app/test_db.py
index 08ebcab..3dd7885 100644
--- a/agent-office/app/test_db.py
+++ b/agent-office/app/test_db.py
@@ -18,9 +18,11 @@ from app.db import (
 def test_init_and_seed():
     init_db()
     agents = get_all_agents()
-    assert len(agents) == 2, f"Expected 2 agents, got {len(agents)}"
     ids = {a["agent_id"] for a in agents}
-    assert ids == {"stock", "music"}, f"Unexpected agent ids: {ids}"
+    # 시드된 핵심 에이전트 존재 검증 — 레지스트리 확장(insta/lotto/realestate/youtube 등)에 견고하도록
+    # 고정 개수/집합이 아닌 subset으로 단언 (이전 len==2/{stock,music} 고정 단언은 stale였음).
+    assert {"stock", "music"} <= ids, f"core agents missing: {ids}"
+    assert len(agents) >= 2
     print("  [PASS] test_init_and_seed")