diff --git a/lesson_26/api/javascript/api_app/package-lock.json b/lesson_26/api/javascript/api_app/package-lock.json
index 3b57d6472..48cdb1877 100644
--- a/lesson_26/api/javascript/api_app/package-lock.json
+++ b/lesson_26/api/javascript/api_app/package-lock.json
@@ -12,6 +12,7 @@
         "@nestjs/common": "^10.0.0",
         "@nestjs/core": "^10.0.0",
         "@nestjs/platform-express": "^10.0.0",
+        "@nestjs/swagger": "^8.0.7",
         "reflect-metadata": "^0.2.0",
         "rxjs": "^7.8.1"
       },
@@ -1562,6 +1563,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/@microsoft/tsdoc": {
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/@microsoft/tsdoc/-/tsdoc-0.15.0.tgz",
+      "integrity": "sha512-HZpPoABogPvjeJOdzCOSJsXeL/SMCBgBZMVC3X3d7YYp2gf31MfxhUoYUNwf1ERPJOnQc0wkFn9trqI6ZEdZuA==",
+      "license": "MIT"
+    },
     "node_modules/@nestjs/cli": {
       "version": "10.4.8",
       "resolved": "https://registry.npmjs.org/@nestjs/cli/-/cli-10.4.8.tgz",
@@ -1675,6 +1682,26 @@
         }
       }
     },
+    "node_modules/@nestjs/mapped-types": {
+      "version": "2.0.6",
+      "resolved": "https://registry.npmjs.org/@nestjs/mapped-types/-/mapped-types-2.0.6.tgz",
+      "integrity": "sha512-84ze+CPfp1OWdpRi1/lOu59hOhTz38eVzJvRKrg9ykRFwDz+XleKfMsG0gUqNZYFa6v53XYzeD+xItt8uDW7NQ==",
+      "license": "MIT",
+      "peerDependencies": {
+        "@nestjs/common": "^8.0.0 || ^9.0.0 || ^10.0.0",
+        "class-transformer": "^0.4.0 || ^0.5.0",
+        "class-validator": "^0.13.0 || ^0.14.0",
+        "reflect-metadata": "^0.1.12 || ^0.2.0"
+      },
+      "peerDependenciesMeta": {
+        "class-transformer": {
+          "optional": true
+        },
+        "class-validator": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@nestjs/platform-express": {
       "version": "10.4.8",
       "resolved": "https://registry.npmjs.org/@nestjs/platform-express/-/platform-express-10.4.8.tgz",
@@ -1720,6 +1747,39 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@nestjs/swagger": {
+      "version": "8.0.7",
+      "resolved": "https://registry.npmjs.org/@nestjs/swagger/-/swagger-8.0.7.tgz",
+      "integrity": "sha512-zaTMCEZ/CxX7QYF110nTqJsn7eCXp4VI9kv7+AdUcIlBmhhgJpggBw2Mx2p6xVjyz1EoWXGfxxWKnxEyaQwFlg==",
+      "license": "MIT",
+      "dependencies": {
+        "@microsoft/tsdoc": "^0.15.0",
+        "@nestjs/mapped-types": "2.0.6",
+        "js-yaml": "4.1.0",
+        "lodash": "4.17.21",
+        "path-to-regexp": "3.3.0",
+        "swagger-ui-dist": "5.18.2"
+      },
+      "peerDependencies": {
+        "@fastify/static": "^6.0.0 || ^7.0.0",
+        "@nestjs/common": "^9.0.0 || ^10.0.0",
+        "@nestjs/core": "^9.0.0 || ^10.0.0",
+        "class-transformer": "*",
+        "class-validator": "*",
+        "reflect-metadata": "^0.1.12 || ^0.2.0"
+      },
+      "peerDependenciesMeta": {
+        "@fastify/static": {
+          "optional": true
+        },
+        "class-transformer": {
+          "optional": true
+        },
+        "class-validator": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/@nestjs/testing": {
       "version": "10.4.8",
       "resolved": "https://registry.npmjs.org/@nestjs/testing/-/testing-10.4.8.tgz",
@@ -1828,6 +1888,13 @@
         "url": "https://opencollective.com/unts"
       }
     },
+    "node_modules/@scarf/scarf": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/@scarf/scarf/-/scarf-1.4.0.tgz",
+      "integrity": "sha512-xxeapPiUXdZAE3che6f3xogoJPeZgig6omHEy1rIY5WVsB3H2BHNnZH+gHG6x91SCWyQCzWGsuL2Hh3ClO5/qQ==",
+      "hasInstallScript": true,
+      "license": "Apache-2.0"
+    },
     "node_modules/@sinclair/typebox": {
       "version": "0.27.8",
       "resolved": "https://registry.npmjs.org/@sinclair/typebox/-/typebox-0.27.8.tgz",
@@ -2831,7 +2898,6 @@
       "version": "2.0.1",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-2.0.1.tgz",
       "integrity": "sha512-8+9WqebbFzpX9OR+Wa6O29asIogeRMzcGtAINdpMHHyAg10f05aSFVBbcEqGf/PXw1EjAZ+q2/bEBg3DvurK3Q==",
-      "dev": true,
       "license": "Python-2.0"
     },
     "node_modules/array-flatten": {
@@ -6269,7 +6335,6 @@
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
       "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "argparse": "^2.0.1"
@@ -6433,7 +6498,6 @@
       "version": "4.17.21",
       "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
       "integrity": "sha512-v2kDEe57lecTulaDIuNTPy3Ry4gLGJ6Z1O3vE1krgXZNrsQ+LFTGHVxVjcXPs17LhbZVGedAJv8XZ1tvj5FvSg==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/lodash.memoize": {
@@ -8228,6 +8292,15 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/swagger-ui-dist": {
+      "version": "5.18.2",
+      "resolved": "https://registry.npmjs.org/swagger-ui-dist/-/swagger-ui-dist-5.18.2.tgz",
+      "integrity": "sha512-J+y4mCw/zXh1FOj5wGJvnAajq6XgHOyywsa9yITmwxIlJbMqITq3gYRZHaeqLVH/eV/HOPphE6NjF+nbSNC5Zw==",
+      "license": "Apache-2.0",
+      "dependencies": {
+        "@scarf/scarf": "=1.4.0"
+      }
+    },
     "node_modules/symbol-observable": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/symbol-observable/-/symbol-observable-4.0.0.tgz",
diff --git a/lesson_26/api/javascript/api_app/package.json b/lesson_26/api/javascript/api_app/package.json
index 02a33ef61..ec7e26780 100644
--- a/lesson_26/api/javascript/api_app/package.json
+++ b/lesson_26/api/javascript/api_app/package.json
@@ -24,6 +24,7 @@
     "@nestjs/common": "^10.0.0",
     "@nestjs/core": "^10.0.0",
     "@nestjs/platform-express": "^10.0.0",
+    "@nestjs/swagger": "^8.0.7",
     "reflect-metadata": "^0.2.0",
     "rxjs": "^7.8.1"
   },
@@ -68,4 +69,4 @@
     "coverageDirectory": "../coverage",
     "testEnvironment": "node"
   }
-}
\ No newline at end of file
+}
diff --git a/lesson_26/api/javascript/api_app/src/main.ts b/lesson_26/api/javascript/api_app/src/main.ts
index b070d44e8..0b439c264 100644
--- a/lesson_26/api/javascript/api_app/src/main.ts
+++ b/lesson_26/api/javascript/api_app/src/main.ts
@@ -1,11 +1,22 @@
 import { NestFactory } from '@nestjs/core';
 import { NestExpressApplication } from '@nestjs/platform-express';
+import { DocumentBuilder, SwaggerModule } from '@nestjs/swagger';
 import { AppModule } from './app.module';
 
 async function bootstrap() {
   const app = await NestFactory.create<NestExpressApplication>(AppModule);
   app.enableCors();
   app.set('trust proxy', 'loopback'); // Trust requests from the loopback address
+
+  const config = new DocumentBuilder()
+    .setTitle('Library API')
+    .setDescription('An API for managing a library of media items')
+    .setVersion('1.0')
+    .addTag('library')
+    .build();
+  const documentFactory = () => SwaggerModule.createDocument(app, config);
+  SwaggerModule.setup('api', app, documentFactory);
+
   await app.listen(3000);
 }