diff --git a/devslab-kit-demo/README.ko.md b/devslab-kit-demo/README.ko.md
index 77c4328..c91f38d 100644
--- a/devslab-kit-demo/README.ko.md
+++ b/devslab-kit-demo/README.ko.md
@@ -63,6 +63,12 @@ curl -s localhost:8080/admin/api/v1/auth/login \
 [관리자 콘솔](https://github.com/devslab-kr/devslab-kit-admin-ui)을
 `http://localhost:8080`에 연결하면 같은 API 위에서 UI를 쓸 수 있습니다.
 
+API 자체를 둘러보려면 — 스타터가 Swagger UI를 포함하므로(devslab-kit `0.2.1`+)
+추가 설정 없이 바로 뜹니다:
+
+- Swagger UI: <http://localhost:8080/swagger-ui.html>
+- OpenAPI JSON: <http://localhost:8080/v3/api-docs>
+
 ## 테스트 실행 (Docker만 필요)
 
 ```bash
diff --git a/devslab-kit-demo/README.md b/devslab-kit-demo/README.md
index 6d7c9a2..d509579 100644
--- a/devslab-kit-demo/README.md
+++ b/devslab-kit-demo/README.md
@@ -64,6 +64,12 @@ curl -s localhost:8080/admin/api/v1/auth/login \
 Point the [admin console](https://github.com/devslab-kr/devslab-kit-admin-ui) at
 `http://localhost:8080` for a UI over the same API.
 
+Or browse the API itself — the starter bundles Swagger UI (devslab-kit `0.2.1`+),
+so it's live with no extra setup:
+
+- Swagger UI: <http://localhost:8080/swagger-ui.html>
+- OpenAPI JSON: <http://localhost:8080/v3/api-docs>
+
 ## Run the tests (Docker only)
 
 ```bash
diff --git a/devslab-kit-demo/build.gradle.kts b/devslab-kit-demo/build.gradle.kts
index 297199b..4d9f66a 100644
--- a/devslab-kit-demo/build.gradle.kts
+++ b/devslab-kit-demo/build.gradle.kts
@@ -22,8 +22,10 @@ repositories {
 }
 
 dependencies {
-    // The devslab-kit starter pulls in the whole platform's auto-configuration.
-    implementation("kr.devslab:devslab-kit-spring-boot-starter:0.1.0")
+    // The devslab-kit starter pulls in the whole platform's auto-configuration —
+    // including Swagger UI (springdoc is bundled from 0.2.1), so /swagger-ui and
+    // /v3/api-docs come up with no extra dependency.
+    implementation("kr.devslab:devslab-kit-spring-boot-starter:0.3.0")
 
     // devslab-kit is deliberately unopinionated about which Spring starters you
     // bring — a consumer wires the runtime it actually wants. This is the set the
diff --git a/devslab-kit-demo/compose.yaml b/devslab-kit-demo/compose.yaml
index 3e4778b..9170b42 100644
--- a/devslab-kit-demo/compose.yaml
+++ b/devslab-kit-demo/compose.yaml
@@ -6,8 +6,8 @@ services:
       - 'POSTGRES_USER=demo'
       - 'POSTGRES_PASSWORD=demo'
     ports:
-      - '5432:5432'
+      - '15432:5432'
   redis:
     image: 'redis:7-alpine'
     ports:
-      - '6379:6379'
+      - '16379:6379'
diff --git a/devslab-kit-demo/docker-compose.yml b/devslab-kit-demo/docker-compose.yml
deleted file mode 100644
index 1910bb9..0000000
--- a/devslab-kit-demo/docker-compose.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-# Single-service compose file for the local "run it yourself" path.
-#
-# The CI / `./gradlew test` path does NOT use this file — Testcontainers spins
-# up its own ephemeral PostgreSQL on a random port. This compose file exists
-# so a human can do:
-#
-#   docker compose up -d db
-#   ./gradlew bootRun
-#
-# ...without installing Postgres on their laptop. The credentials and port
-# below match what application.yml reads.
-
-services:
-  db:
-    image: postgres:16-alpine
-    container_name: easy-paging-postgres-demo-db
-    environment:
-      POSTGRES_DB: easypaging
-      POSTGRES_USER: easypaging
-      POSTGRES_PASSWORD: easypaging
-    ports:
-      - "5432:5432"
-    healthcheck:
-      test: ["CMD-SHELL", "pg_isready -U easypaging -d easypaging"]
-      interval: 5s
-      timeout: 3s
-      retries: 10
-    volumes:
-      - pgdata:/var/lib/postgresql/data
-
-volumes:
-  pgdata:
diff --git a/devslab-kit-demo/src/main/resources/application.yaml b/devslab-kit-demo/src/main/resources/application.yaml
index cf01d8c..1aee024 100644
--- a/devslab-kit-demo/src/main/resources/application.yaml
+++ b/devslab-kit-demo/src/main/resources/application.yaml
@@ -5,13 +5,13 @@ spring:
   # compose.yaml (Postgres + Redis) is started automatically on `bootRun` by
   # spring-boot-docker-compose; these defaults point at it.
   datasource:
-    url: ${DEVSLAB_DATASOURCE_URL:jdbc:postgresql://localhost:5432/demo}
+    url: ${DEVSLAB_DATASOURCE_URL:jdbc:postgresql://localhost:15432/demo}
     username: ${DEVSLAB_DATASOURCE_USERNAME:demo}
     password: ${DEVSLAB_DATASOURCE_PASSWORD:demo}
   data:
     redis:
       host: ${DEVSLAB_REDIS_HOST:localhost}
-      port: ${DEVSLAB_REDIS_PORT:6379}
+      port: ${DEVSLAB_REDIS_PORT:16379}
 
   jpa:
     open-in-view: false