diff --git a/src/dotnet/QuantEngine.Infrastructure/Migrations/V7__Seed_Initial_Settings.sql b/src/dotnet/QuantEngine.Infrastructure/Migrations/V7__Seed_Initial_Settings.sql
new file mode 100644
index 00000000..e171aa2e
--- /dev/null
+++ b/src/dotnet/QuantEngine.Infrastructure/Migrations/V7__Seed_Initial_Settings.sql
@@ -0,0 +1,9 @@
+-- V7__Seed_Initial_Settings.sql
+-- Insert default system settings into quantengine.settings
+
+INSERT INTO quantengine.settings (ordinal, key, value_json, note, updated_at)
+VALUES
+(1, 'api_request_interval_ms', '{"value": 400}', 'KIS OpenAPI 요청 간격 딜레이 (밀리초)', NOW()::text),
+(2, 'ip_lockout_duration_seconds', '{"value": 1800}', '비밀번호 실패 시 IP 차단 지속 시간 (초)', NOW()::text),
+(3, 'max_login_attempts', '{"value": 3}', '로그인 잠금 전 최대 시도 가능 횟수', NOW()::text)
+ON CONFLICT (key) DO NOTHING;