diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
new file mode 100644
index 0000000..eb8f3eb
--- /dev/null
+++ b/.github/workflows/test.yaml
@@ -0,0 +1,23 @@
+name: Test CI (Service API)
+
+on:
+  pull_request:
+    branches: [main, dev]
+
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Node 20.11 설치
+        uses: actions/setup-node@v2
+        with:
+          node-version: "20.11"
+
+      - name: 모듈 설치
+        run: cd ./BE/service && npm i
+
+      - name: 테스트 실행
+        run: cd ./BE/service && npm run test
diff --git a/BE/holder/.eslintrc.js b/BE/holder/.eslintrc.js
index 8f5aedb..356232f 100644
--- a/BE/holder/.eslintrc.js
+++ b/BE/holder/.eslintrc.js
@@ -2,7 +2,7 @@ module.exports = {
   parser: '@typescript-eslint/parser',
   parserOptions: {
     project: 'tsconfig.json',
-    tsconfigRootDir : __dirname, 
+    tsconfigRootDir: __dirname,
     sourceType: 'module',
   },
   plugins: ['@typescript-eslint/eslint-plugin'],
@@ -21,5 +21,11 @@ module.exports = {
     '@typescript-eslint/explicit-function-return-type': 'off',
     '@typescript-eslint/explicit-module-boundary-types': 'off',
     '@typescript-eslint/no-explicit-any': 'off',
+    'prettier/prettier': [
+      'error',
+      {
+        endOfLine: 'auto',
+      },
+    ],
   },
 };
diff --git a/BE/holder/package-lock.json b/BE/holder/package-lock.json
index 38f2e1a..c019645 100644
--- a/BE/holder/package-lock.json
+++ b/BE/holder/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.1",
       "license": "UNLICENSED",
       "dependencies": {
-        "@nestjs/common": "^9.0.0",
+        "@nestjs/common": "^9.4.3",
         "@nestjs/core": "^9.0.0",
         "@nestjs/platform-express": "^9.0.0",
         "reflect-metadata": "^0.1.13",
diff --git a/BE/holder/package.json b/BE/holder/package.json
index edd04f6..d4ae085 100644
--- a/BE/holder/package.json
+++ b/BE/holder/package.json
@@ -21,7 +21,7 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
-    "@nestjs/common": "^9.0.0",
+    "@nestjs/common": "^9.4.3",
     "@nestjs/core": "^9.0.0",
     "@nestjs/platform-express": "^9.0.0",
     "reflect-metadata": "^0.1.13",
diff --git a/BE/issuer/.eslintrc.js b/BE/issuer/.eslintrc.js
index 8f5aedb..356232f 100644
--- a/BE/issuer/.eslintrc.js
+++ b/BE/issuer/.eslintrc.js
@@ -2,7 +2,7 @@ module.exports = {
   parser: '@typescript-eslint/parser',
   parserOptions: {
     project: 'tsconfig.json',
-    tsconfigRootDir : __dirname, 
+    tsconfigRootDir: __dirname,
     sourceType: 'module',
   },
   plugins: ['@typescript-eslint/eslint-plugin'],
@@ -21,5 +21,11 @@ module.exports = {
     '@typescript-eslint/explicit-function-return-type': 'off',
     '@typescript-eslint/explicit-module-boundary-types': 'off',
     '@typescript-eslint/no-explicit-any': 'off',
+    'prettier/prettier': [
+      'error',
+      {
+        endOfLine: 'auto',
+      },
+    ],
   },
 };
diff --git a/BE/issuer/package-lock.json b/BE/issuer/package-lock.json
index c127cd7..c5c2921 100644
--- a/BE/issuer/package-lock.json
+++ b/BE/issuer/package-lock.json
@@ -9,8 +9,8 @@
       "version": "0.0.1",
       "license": "UNLICENSED",
       "dependencies": {
-        "@nestjs/common": "^9.0.0",
-        "@nestjs/core": "^9.0.0",
+        "@nestjs/common": "^9.4.3",
+        "@nestjs/core": "^9.4.3",
         "@nestjs/platform-express": "^9.0.0",
         "reflect-metadata": "^0.1.13",
         "rimraf": "^3.0.2",
diff --git a/BE/issuer/package.json b/BE/issuer/package.json
index b050448..4c8e65b 100644
--- a/BE/issuer/package.json
+++ b/BE/issuer/package.json
@@ -21,8 +21,8 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
-    "@nestjs/common": "^9.0.0",
-    "@nestjs/core": "^9.0.0",
+    "@nestjs/common": "^9.4.3",
+    "@nestjs/core": "^9.4.3",
     "@nestjs/platform-express": "^9.0.0",
     "reflect-metadata": "^0.1.13",
     "rimraf": "^3.0.2",
diff --git a/BE/service/.eslintrc.js b/BE/service/.eslintrc.js
index 8f5aedb..356232f 100644
--- a/BE/service/.eslintrc.js
+++ b/BE/service/.eslintrc.js
@@ -2,7 +2,7 @@ module.exports = {
   parser: '@typescript-eslint/parser',
   parserOptions: {
     project: 'tsconfig.json',
-    tsconfigRootDir : __dirname, 
+    tsconfigRootDir: __dirname,
     sourceType: 'module',
   },
   plugins: ['@typescript-eslint/eslint-plugin'],
@@ -21,5 +21,11 @@ module.exports = {
     '@typescript-eslint/explicit-function-return-type': 'off',
     '@typescript-eslint/explicit-module-boundary-types': 'off',
     '@typescript-eslint/no-explicit-any': 'off',
+    'prettier/prettier': [
+      'error',
+      {
+        endOfLine: 'auto',
+      },
+    ],
   },
 };
diff --git a/BE/service/package-lock.json b/BE/service/package-lock.json
index 2c9cf3c..e127f6c 100644
--- a/BE/service/package-lock.json
+++ b/BE/service/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.1",
       "license": "UNLICENSED",
       "dependencies": {
-        "@nestjs/common": "^9.0.0",
+        "@nestjs/common": "^9.4.3",
         "@nestjs/core": "^9.0.0",
         "@nestjs/platform-express": "^9.0.0",
         "reflect-metadata": "^0.1.13",
@@ -32,7 +32,7 @@
         "jest": "28.1.3",
         "prettier": "^2.3.2",
         "source-map-support": "^0.5.20",
-        "supertest": "^6.1.3",
+        "supertest": "^6.3.4",
         "ts-jest": "28.0.8",
         "ts-loader": "^9.2.3",
         "ts-node": "^10.0.0",
diff --git a/BE/service/package.json b/BE/service/package.json
index 96e4552..72023ba 100644
--- a/BE/service/package.json
+++ b/BE/service/package.json
@@ -14,14 +14,14 @@
     "start:debug": "nest start --debug --watch",
     "start:prod": "node dist/main",
     "lint": "eslint \"{src,apps,libs,test}/**/*.ts\" --fix",
-    "test": "jest",
+    "test": "jest --config ./test/jest-test.json",
     "test:watch": "jest --watch",
     "test:cov": "jest --coverage",
     "test:debug": "node --inspect-brk -r tsconfig-paths/register -r ts-node/register node_modules/.bin/jest --runInBand",
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
-    "@nestjs/common": "^9.0.0",
+    "@nestjs/common": "^9.4.3",
     "@nestjs/core": "^9.0.0",
     "@nestjs/platform-express": "^9.0.0",
     "reflect-metadata": "^0.1.13",
@@ -44,7 +44,7 @@
     "jest": "28.1.3",
     "prettier": "^2.3.2",
     "source-map-support": "^0.5.20",
-    "supertest": "^6.1.3",
+    "supertest": "^6.3.4",
     "ts-jest": "28.0.8",
     "ts-loader": "^9.2.3",
     "ts-node": "^10.0.0",
@@ -68,4 +68,4 @@
     "coverageDirectory": "../coverage",
     "testEnvironment": "node"
   }
-}
+}
\ No newline at end of file
diff --git a/BE/service/src/app.controller.ts b/BE/service/src/app.controller.ts
new file mode 100644
index 0000000..f857c23
--- /dev/null
+++ b/BE/service/src/app.controller.ts
@@ -0,0 +1,11 @@
+import { Controller, Get } from '@nestjs/common';
+import { AppService } from './app.service';
+
+@Controller('app')
+export class AppController {
+  constructor(private readonly appService: AppService) {}
+  @Get()
+  getHello(): string {
+    return this.appService.sayHello();
+  }
+}
diff --git a/BE/service/src/app.module.ts b/BE/service/src/app.module.ts
index ee5f2c9..08c9fcd 100644
--- a/BE/service/src/app.module.ts
+++ b/BE/service/src/app.module.ts
@@ -1,8 +1,10 @@
 import { Module } from '@nestjs/common';
+import { AppService } from './app.service';
+import { AppController } from './app.controller';
 
 @Module({
   imports: [],
-  controllers: [],
-  providers: [],
+  controllers: [AppController],
+  providers: [AppService],
 })
 export class AppModule {}
diff --git a/BE/service/src/app.service.ts b/BE/service/src/app.service.ts
new file mode 100644
index 0000000..1566b18
--- /dev/null
+++ b/BE/service/src/app.service.ts
@@ -0,0 +1,8 @@
+import { Injectable } from '@nestjs/common';
+
+@Injectable()
+export class AppService {
+  sayHello(): string {
+    return 'Hello?';
+  }
+}
diff --git a/BE/service/test/app.test.spec.ts b/BE/service/test/app.test.spec.ts
new file mode 100644
index 0000000..70f39e4
--- /dev/null
+++ b/BE/service/test/app.test.spec.ts
@@ -0,0 +1,28 @@
+import { Test, TestingModule } from '@nestjs/testing';
+import { INestApplication } from '@nestjs/common';
+import * as request from 'supertest';
+import { AppModule } from '../src/app.module';
+
+describe('AppController (e2e)', () => {
+  let app: INestApplication;
+
+  beforeEach(async () => {
+    const moduleFixture: TestingModule = await Test.createTestingModule({
+      imports: [AppModule],
+    }).compile();
+
+    app = moduleFixture.createNestApplication();
+    await app.init();
+  });
+
+  it('/app (GET)', () => {
+    return request(app.getHttpServer())
+      .get('/app')
+      .expect(200)
+      .expect('Hello?');
+  });
+
+  afterAll(async () => {
+    await app.close();
+  });
+});
diff --git a/BE/service/test/jest-test.json b/BE/service/test/jest-test.json
new file mode 100644
index 0000000..54c3b88
--- /dev/null
+++ b/BE/service/test/jest-test.json
@@ -0,0 +1,13 @@
+{
+  "moduleFileExtensions": [
+    "js",
+    "json",
+    "ts"
+  ],
+  "rootDir": ".",
+  "testEnvironment": "node",
+  "testRegex": ".test.spec.ts$",
+  "transform": {
+    "^.+\\.(t|j)s$": "ts-jest"
+  }
+}
\ No newline at end of file
diff --git a/BE/verifier/.eslintrc.js b/BE/verifier/.eslintrc.js
index 8f5aedb..356232f 100644
--- a/BE/verifier/.eslintrc.js
+++ b/BE/verifier/.eslintrc.js
@@ -2,7 +2,7 @@ module.exports = {
   parser: '@typescript-eslint/parser',
   parserOptions: {
     project: 'tsconfig.json',
-    tsconfigRootDir : __dirname, 
+    tsconfigRootDir: __dirname,
     sourceType: 'module',
   },
   plugins: ['@typescript-eslint/eslint-plugin'],
@@ -21,5 +21,11 @@ module.exports = {
     '@typescript-eslint/explicit-function-return-type': 'off',
     '@typescript-eslint/explicit-module-boundary-types': 'off',
     '@typescript-eslint/no-explicit-any': 'off',
+    'prettier/prettier': [
+      'error',
+      {
+        endOfLine: 'auto',
+      },
+    ],
   },
 };
diff --git a/BE/verifier/package-lock.json b/BE/verifier/package-lock.json
index db0b116..1b4ea7c 100644
--- a/BE/verifier/package-lock.json
+++ b/BE/verifier/package-lock.json
@@ -9,7 +9,7 @@
       "version": "0.0.1",
       "license": "UNLICENSED",
       "dependencies": {
-        "@nestjs/common": "^9.0.0",
+        "@nestjs/common": "^9.4.3",
         "@nestjs/core": "^9.0.0",
         "@nestjs/platform-express": "^9.0.0",
         "reflect-metadata": "^0.1.13",
diff --git a/BE/verifier/package.json b/BE/verifier/package.json
index e3c7933..61d16d2 100644
--- a/BE/verifier/package.json
+++ b/BE/verifier/package.json
@@ -21,7 +21,7 @@
     "test:e2e": "jest --config ./test/jest-e2e.json"
   },
   "dependencies": {
-    "@nestjs/common": "^9.0.0",
+    "@nestjs/common": "^9.4.3",
     "@nestjs/core": "^9.0.0",
     "@nestjs/platform-express": "^9.0.0",
     "reflect-metadata": "^0.1.13",