diff --git a/README.md b/README.md
index 5b225fd..3889c61 100755
--- a/README.md
+++ b/README.md
@@ -253,13 +253,46 @@ With this `{rootDir}/src/ui/tsconfig.json`:
 
 ##### Dev build
 
-- `devServer` (`Object`) — webpack dev server options.
+- `devServer` (`DevServerConfig`) — [webpack-dev-server](https://webpack.js.org/configuration/dev-server/) options with app-builder-specific settings. All options are passed to the underlying dev server and can override defaults.
+
+  App-builder-specific options:
+
   - `ipc` (`string`) — the Unix socket to listen to. If `ipc` and `port` are not defined, then the socket `{rootDir}/dist/run/client.sock` is used.
   - `port` (`number | true`) — specify a port number to listen for requests on. If `true`, the free port will be selected automatically.
   - `webSocketPath` (`string`) — tells clients connected to devServer to use the provided path to connect. Default is `${publicPathPrefix}/build/sockjs-node`.
   - `webSocketClientPort` (`number`) - tells clients to connect to devServer using this port from a browser. Default is `${devServer.port}`
   - `type` (`'https'`) — allow to serve over HTTPS.
   - `options` (`import('https').ServerOptions`) — allow to provide your own certificate.
+  - `writeToDisk` (`boolean | (targetPath: string) => boolean`) — write dev middleware output to disk.
+
+  Commonly used [webpack-dev-server](https://webpack.js.org/configuration/dev-server/) options:
+
+  - `host` (`string`) — hostname to bind the server to. Default is `'0.0.0.0'`.
+  - `proxy` (`ProxyConfigArray`) — proxy configuration for API requests. [more](https://webpack.js.org/configuration/dev-server/#devserverproxy)
+  - `historyApiFallback` (`boolean | ConnectHistoryApiFallbackOptions`) — enable SPA fallback for client-side routing. [more](https://webpack.js.org/configuration/dev-server/#devserverhistoryapifallback)
+  - `client` (`boolean | ClientConfiguration`) — browser client settings. [more](https://webpack.js.org/configuration/dev-server/#devserverclient)
+    - `overlay` (`boolean | {errors?: boolean, warnings?: boolean, runtimeErrors?: boolean}`) — show compile errors and warnings in the browser overlay.
+
+  Example:
+
+  ```typescript
+  import {defineConfig} from '@gravity-ui/app-builder';
+
+  export default defineConfig({
+    client: {
+      devServer: {
+        port: true,
+        host: 'localhost',
+        historyApiFallback: true,
+        proxy: [{context: ['/api'], target: 'http://localhost:3000'}],
+        client: {
+          overlay: false,
+        },
+      },
+    },
+  });
+  ```
+
 - `watchOptions` — a set of options used to customize watch mode, [more](https://webpack.js.org/configuration/watch/#watchoptions)
   - `watchPackages` (`boolean`) - watch all changes in `node_modules`.
 - `reactRefresh` (`false | (options: ReactRefreshPluginOptions) => ReactRefreshPluginOptions`) — disable or configure `react-refresh` in dev mode, [more](https://github.com/pmmmwh/react-refresh-webpack-plugin/blob/main/docs/API.md#options)
diff --git a/src/common/models/index.ts b/src/common/models/index.ts
index d1ac4e1..a2dd084 100755
--- a/src/common/models/index.ts
+++ b/src/common/models/index.ts
@@ -11,7 +11,10 @@ import type {
 } from '@rspack/core';
 import type * as Babel from '@babel/core';
 import type * as Swc from '@swc/core';
-import type {ServerConfiguration} from 'webpack-dev-server';
+import type {
+    ServerConfiguration,
+    Configuration as WebpackDevServerConfiguration,
+} from 'webpack-dev-server';
 import type {Options as CircularDependenciesOptions} from 'circular-dependency-plugin';
 import type {Config as SvgrConfig} from '@svgr/core';
 import type {ForkTsCheckerWebpackPluginOptions} from 'fork-ts-checker-webpack-plugin/lib/plugin-options';
@@ -37,15 +40,45 @@ export interface Entities<T> {
     keys: string[];
 }
 
-interface DevServerConfig {
+/**
+ * Dev server configuration.
+ * Extends [webpack-dev-server options](https://webpack.js.org/configuration/dev-server/)
+ * with app-builder-specific settings.
+ */
+export type DevServerConfig = Omit<
+    WebpackDevServerConfiguration,
+    'port' | 'server' | 'devMiddleware' | 'ipc'
+> & {
+    /**
+     * Unix socket to listen on.
+     * If `ipc` and `port` are not defined, the socket `{rootDir}/dist/run/client.sock` is used.
+     */
     ipc?: string;
+    /**
+     * Port number to listen on. If `true`, a free port is selected automatically.
+     */
     port?: number | true;
+    /**
+     * WebSocket path for HMR clients. Default is `/${publicPath}/sockjs-node`.
+     */
     webSocketPath?: string;
+    /**
+     * Port for browser WebSocket connection. Default is `devServer.port`.
+     */
     webSocketClientPort?: number;
+    /**
+     * Serve over HTTPS.
+     */
     type?: 'https';
+    /**
+     * HTTPS server options (e.g. custom certificate).
+     */
     options?: import('https').ServerOptions;
+    /**
+     * Write dev middleware output to disk.
+     */
     writeToDisk?: boolean | ((targetPath: string) => boolean);
-}
+};
 
 interface ContextReplacement {
     'highlight.js'?: string[];
diff --git a/src/index.ts b/src/index.ts
index 092b029..5d296d8 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -8,6 +8,7 @@ export {defineConfig} from './common/models';
 export {babelPreset} from './common/babel';
 
 export type {
+    DevServerConfig,
     ProjectConfig,
     ServiceConfig,
     LibraryConfig,