diff --git a/packages/playwright-core/src/protocol/debug.ts b/packages/playwright-core/src/protocol/debug.ts
index 176864f4f5..64a442450b 100644
--- a/packages/playwright-core/src/protocol/debug.ts
+++ b/packages/playwright-core/src/protocol/debug.ts
@@ -66,7 +66,6 @@ export const slowMoActions = new Set([
 
 export const commandsWithTracingSnapshots = new Set([
   'EventTarget.waitForEventInfo',
-  'LocalUtils.waitForEventInfo',
   'MockingProxy.waitForEventInfo',
   'BrowserContext.waitForEventInfo',
   'Page.waitForEventInfo',
diff --git a/packages/playwright-core/src/protocol/validator.ts b/packages/playwright-core/src/protocol/validator.ts
index 661c4fc9d8..def91fc000 100644
--- a/packages/playwright-core/src/protocol/validator.ts
+++ b/packages/playwright-core/src/protocol/validator.ts
@@ -236,7 +236,6 @@ scheme.EventTargetWaitForEventInfoParams = tObject({
     error: tOptional(tString),
   }),
 });
-scheme.LocalUtilsWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParams');
 scheme.MockingProxyWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParams');
 scheme.BrowserContextWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParams');
 scheme.PageWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParams');
@@ -244,7 +243,6 @@ scheme.WebSocketWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParam
 scheme.ElectronApplicationWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParams');
 scheme.AndroidDeviceWaitForEventInfoParams = tType('EventTargetWaitForEventInfoParams');
 scheme.EventTargetWaitForEventInfoResult = tOptional(tObject({}));
-scheme.LocalUtilsWaitForEventInfoResult = tType('EventTargetWaitForEventInfoResult');
 scheme.MockingProxyWaitForEventInfoResult = tType('EventTargetWaitForEventInfoResult');
 scheme.BrowserContextWaitForEventInfoResult = tType('EventTargetWaitForEventInfoResult');
 scheme.PageWaitForEventInfoResult = tType('EventTargetWaitForEventInfoResult');
diff --git a/packages/playwright-core/src/server/dispatchers/localUtilsDispatcher.ts b/packages/playwright-core/src/server/dispatchers/localUtilsDispatcher.ts
index 8a4af139af..1dcc791155 100644
--- a/packages/playwright-core/src/server/dispatchers/localUtilsDispatcher.ts
+++ b/packages/playwright-core/src/server/dispatchers/localUtilsDispatcher.ts
@@ -20,7 +20,7 @@ import path from 'path';
 import os from 'os';
 import type * as channels from '@protocol/channels';
 import { ManualPromise } from '../../utils/manualPromise';
-import { assert, calculateSha1, createGuid, HttpServer, removeFolders, urlMatches } from '../../utils';
+import { assert, calculateSha1, createGuid, removeFolders } from '../../utils';
 import type { RootDispatcher } from './dispatcher';
 import { Dispatcher } from './dispatcher';
 import { yazl, yauzl } from '../../zipBundle';
@@ -41,14 +41,13 @@ import type { Playwright } from '../playwright';
 import { SdkObject } from '../../server/instrumentation';
 import { serializeClientSideCallMetadata } from '../../utils';
 import { deviceDescriptors as descriptors }  from '../deviceDescriptors';
-import { APIRequestContextDispatcher, RequestDispatcher, ResponseDispatcher, RouteDispatcher } from './networkDispatchers';
 import type { APIRequestContext } from '../fetch';
 import { GlobalAPIRequestContext } from '../fetch';
-import { MockingProxy, ServerInterceptionRegistry } from '../mockingProxy';
+import { MockingProxy } from '../mockingProxy';
+import { MockingProxyDispatcher } from './mockingProxyDispatcher';
 
 export class LocalUtilsDispatcher extends Dispatcher<SdkObject, channels.LocalUtilsChannel, RootDispatcher> implements channels.LocalUtilsChannel {
   _type_LocalUtils: boolean;
-  _type_EventTarget: boolean;
   private _harBackends = new Map<string, HarBackend>();
   private _stackSessions = new Map<string, {
     file: string,
@@ -56,9 +55,7 @@ export class LocalUtilsDispatcher extends Dispatcher<SdkObject, channels.LocalUt
     tmpDir: string | undefined,
     callStacks: channels.ClientSideCallMetadata[]
   }>();
-  _requestContext: APIRequestContext;
-  private _interceptionRegistry;
-  private _server?: WorkerHttpServer;
+  private _requestContext: APIRequestContext;
 
   constructor(scope: RootDispatcher, playwright: Playwright) {
     const localUtils = new SdkObject(playwright, 'localUtils', 'localUtils');
@@ -68,40 +65,9 @@ export class LocalUtilsDispatcher extends Dispatcher<SdkObject, channels.LocalUt
     const requestContext = new GlobalAPIRequestContext(playwright, {});
     super(scope, localUtils, 'LocalUtils', {
       deviceDescriptors,
-      requestContext: APIRequestContextDispatcher.from(scope, requestContext),
     });
     this._requestContext = requestContext;
     this._type_LocalUtils = true;
-    this._type_EventTarget = true;
-
-    this._interceptionRegistry = new ServerInterceptionRegistry(this._object, this._requestContext, {
-      onRequest: request => {
-        this._dispatchEvent('request', { request: RequestDispatcher.from(this.parentScope() as any, request) });
-      },
-      onRequestFinished: (request, response) => {
-        this._dispatchEvent('requestFinished', {
-          request: RequestDispatcher.from(this.parentScope() as any, request),
-          response: ResponseDispatcher.fromNullable(this.parentScope() as any, response ?? null),
-          responseEndTiming: request._responseEndTiming,
-        });
-      },
-      onRequestFailed: request => {
-        this._dispatchEvent('requestFailed', {
-          request: RequestDispatcher.from(this.parentScope() as any, request),
-          responseEndTiming: request._responseEndTiming,
-          failureText: request._failureText ?? undefined
-        });
-      },
-      onResponse: (request, response) => {
-        this._dispatchEvent('response', {
-          request: RequestDispatcher.from(this.parentScope() as any, request),
-          response: ResponseDispatcher.from(this.parentScope() as any, response),
-        });
-      },
-      onRoute: (route, request) => {
-        this._dispatchEvent('route', { route: RouteDispatcher.from(RequestDispatcher.from(this.parentScope() as any, request), route) });
-      },
-    });
   }
 
   async zip(params: channels.LocalUtilsZipParams): Promise<void> {
@@ -316,24 +282,10 @@ export class LocalUtilsDispatcher extends Dispatcher<SdkObject, channels.LocalUt
     this._stackSessions.delete(stacksId!);
   }
 
-  async setServerNetworkInterceptionPatterns(params: channels.LocalUtilsSetServerNetworkInterceptionPatternsParams, metadata?: CallMetadata): Promise<channels.LocalUtilsSetServerNetworkInterceptionPatternsResult> {
-    if (!this._server) {
-      this._server = new WorkerHttpServer();
-      new MockingProxy(this._interceptionRegistry).install(this._server);
-      await this._server.start({ port: params.port });
-    }
-
-    if (params.patterns.length === 0)
-      return this._interceptionRegistry.setRequestInterceptor(undefined);
-
-    const urlMatchers = params.patterns.map(pattern => pattern.regexSource ? new RegExp(pattern.regexSource, pattern.regexFlags!) : pattern.glob!);
-    this._interceptionRegistry.setRequestInterceptor(url => urlMatchers.some(urlMatch => urlMatches(undefined, url, urlMatch)));
-  }
-}
-
-export class WorkerHttpServer extends HttpServer {
-  override _handleCORS(request: http.IncomingMessage, response: http.ServerResponse): boolean {
-    return false;
+  async newMockingProxy(params: channels.LocalUtilsNewMockingProxyParams, metadata?: CallMetadata): Promise<channels.LocalUtilsNewMockingProxyResult> {
+    const mockingProxy = new MockingProxy(this._object, this._requestContext);
+    await mockingProxy.start(params.port);
+    return { mockingProxy: MockingProxyDispatcher.from(this.parentScope(), mockingProxy) };
   }
 }
 
diff --git a/packages/playwright-core/src/server/dispatchers/mockingProxyDispatcher.ts b/packages/playwright-core/src/server/dispatchers/mockingProxyDispatcher.ts
index 6bcef53e84..399be0e89f 100644
--- a/packages/playwright-core/src/server/dispatchers/mockingProxyDispatcher.ts
+++ b/packages/playwright-core/src/server/dispatchers/mockingProxyDispatcher.ts
@@ -14,27 +14,33 @@
  * limitations under the License.
  */
 import type { CallMetadata } from '@protocol/callMetadata';
-import type { MockingProxy, ServerInterceptionRegistry } from '../mockingProxy';
+import type { MockingProxy } from '../mockingProxy';
 import type { RootDispatcher } from './dispatcher';
 import { Dispatcher, existingDispatcher } from './dispatcher';
 import type * as channels from '@protocol/channels';
-import { SdkObject } from '../instrumentation';
+import { APIRequestContextDispatcher } from './networkDispatchers';
+import { urlMatches } from '@isomorphic/urlMatch';
 
-export class MockingProxyDispatcher extends Dispatcher<ServerInterceptionRegistry, channels.MockingProxyChannel, RootDispatcher> implements channels.MockingProxyChannel {
+export class MockingProxyDispatcher extends Dispatcher<MockingProxy, channels.MockingProxyChannel, RootDispatcher> implements channels.MockingProxyChannel {
   _type_MockingProxy = true;
   _type_EventTarget = true;
 
-  static from(scope: RootDispatcher, mockingProxy: ServerInterceptionRegistry): MockingProxyDispatcher {
+  static from(scope: RootDispatcher, mockingProxy: MockingProxy): MockingProxyDispatcher {
     return existingDispatcher<MockingProxyDispatcher>(mockingProxy) || new MockingProxyDispatcher(scope, mockingProxy);
   }
 
-  private constructor(scope: RootDispatcher, mockingProxy: ServerInterceptionRegistry) {
+  private constructor(scope: RootDispatcher, mockingProxy: MockingProxy) {
     super(scope, mockingProxy, 'MockingProxy', {
-      port: mockingProxy.port(),
+      port: mockingProxy.port,
+      requestContext: APIRequestContextDispatcher.from(scope, mockingProxy.fetchRequest),
     });
   }
 
-  setInterceptionPatterns(params: channels.MockingProxySetInterceptionPatternsParams, metadata?: CallMetadata): Promise<channels.MockingProxySetInterceptionPatternsResult> {
-    throw new Error('Method not implemented.');
+  async setInterceptionPatterns(params: channels.MockingProxySetInterceptionPatternsParams, metadata?: CallMetadata): Promise<channels.MockingProxySetInterceptionPatternsResult> {
+    if (params.patterns.length === 0)
+      return this._object.setInterceptionPatterns(undefined);
+
+    const urlMatchers = params.patterns.map(pattern => pattern.regexSource ? new RegExp(pattern.regexSource, pattern.regexFlags!) : pattern.glob!);
+    this._object.setInterceptionPatterns(url => urlMatchers.some(urlMatch => urlMatches(undefined, url, urlMatch)));
   }
 }
diff --git a/packages/playwright-core/src/server/mockingProxy.ts b/packages/playwright-core/src/server/mockingProxy.ts
index 108b75c05f..c7a951aa11 100644
--- a/packages/playwright-core/src/server/mockingProxy.ts
+++ b/packages/playwright-core/src/server/mockingProxy.ts
@@ -19,144 +19,45 @@ import https from 'https';
 import url from 'url';
 import type { APIRequestContext } from './fetch';
 import { SdkObject } from './instrumentation';
-import type { RemoteAddr, RequestContext, ResourceTiming, SecurityDetails } from './network';
+import type { RequestContext, ResourceTiming, SecurityDetails } from './network';
 import { Request, Response, Route } from './network';
-import type { HeadersArray, NormalizedContinueOverrides, NormalizedFulfillResponse } from './types';
-import { ManualPromise, monotonicTime } from 'playwright-core/lib/utils';
-import type { WorkerHttpServer } from './dispatchers/localUtilsDispatcher';
+import type { HeadersArray, } from './types';
+import { HttpServer, ManualPromise, monotonicTime } from '../utils';
 import { TLSSocket } from 'tls';
 import type { AddressInfo } from 'net';
 import { pipeline } from 'stream/promises';
 import { Transform } from 'stream';
 
-type InterceptorResult =
-| { result: 'continue', request: Request, overrides?: NormalizedContinueOverrides }
-| { result: 'abort', request: Request, errorCode: string }
-| { result: 'fulfill', request: Request, response: NormalizedFulfillResponse };
-
-interface EventDelegate {
-  onRequest(request: Request): void;
-  onRequestFinished(request: Request, response: Response): void;
-  onRequestFailed(request: Request): void;
-  onResponse(request: Request, response: Response): void;
-  onRoute(route: Route, request: Request): void;
-}
-
-export class ServerInterceptionRegistry extends SdkObject implements RequestContext {
-  private _eventDelegate: EventDelegate;
+export class MockingProxy extends SdkObject implements RequestContext {
   fetchRequest: APIRequestContext;
   private _matches?: (url: string) => boolean;
+  private _httpServer = new WorkerHttpServer();
 
-  constructor(parent: SdkObject, requestContext: APIRequestContext, eventDelegate: EventDelegate) {
-    super(parent, 'serverInterceptionRegistry');
-    this._eventDelegate = eventDelegate;
+  constructor(parent: SdkObject, requestContext: APIRequestContext) {
+    super(parent, 'MockingProxy');
     this.fetchRequest = requestContext;
-  }
 
-  setRequestInterceptor(matches?: (url: string) => boolean) {
-    this._matches = matches;
-  }
-
-  handle(url: string, method: string, body: Buffer | null, headers: HeadersArray): Promise<InterceptorResult> {
-    const request = new Request(this, null, null, null, undefined, url, '', method, body, headers);
-    request.setRawRequestHeaders(headers);
-    this._eventDelegate.onRequest(request);
-
-    if (!this._matches?.(url))
-      return Promise.resolve({ result: 'continue', request });
-
-    return new Promise(resolve => {
-      const route = new Route(request, {
-        async abort(errorCode) {
-          resolve({ result: 'abort', request, errorCode });
-        },
-        async continue(overrides) {
-          resolve({ result: 'continue', request, overrides });
-        },
-        async fulfill(response) {
-          resolve({ result: 'fulfill', request, response });
-        },
-      });
-
-      this._eventDelegate.onRoute(route, request);
-    });
-  }
-
-  failed(request: Request, error: string) {
-    request._setFailureText(error);
-    this._eventDelegate.onRequestFailed(request);
-  }
-
-  response(request: Request, status: number, statusText: string, headers: HeadersArray, body: () => Promise<Buffer>, httpVersion: string, timing: ResourceTiming, securityDetails: SecurityDetails | undefined, serverAddr: RemoteAddr | undefined) {
-    const response = new Response(request, status, statusText, headers, timing, body, false, httpVersion);
-    response.setRawResponseHeaders(headers);
-    response._securityDetailsFinished(securityDetails);
-    response._serverAddrFinished(serverAddr);
-    this._eventDelegate.onResponse(request, response);
-
-    return {
-      finished: async (responseEndTiming: number, transferSize: number, encodedBodySize: number) => {
-        response._requestFinished(responseEndTiming);
-        response.setTransferSize(transferSize);
-        response.setEncodedBodySize(encodedBodySize);
-        response.setResponseHeadersSize(transferSize - encodedBodySize);
-        this._eventDelegate.onRequestFinished(request, response);
-      }
-    };
-  }
-
-  addRouteInFlight(route: Route): void {
-
-  }
-
-  removeRouteInFlight(route: Route): void {
-
-  }
-}
-
-function headersArray(req: Pick<http.IncomingMessage, 'headersDistinct'>): HeadersArray {
-  return Object.entries(req.headersDistinct).flatMap(([name, values = []]) => values.map(value => ({ name, value })));
-}
-
-function headersArrayToOutgoingHeaders(headers: HeadersArray) {
-  const result: http.OutgoingHttpHeaders = {};
-  for (const { name, value } of headers) {
-    if (result[name] === undefined)
-      result[name] = value;
-    else if (Array.isArray(result[name]))
-      result[name].push(value);
-    else
-      result[name] = [result[name] as string, value];
-  }
-  return result;
-}
-
-async function collectBody(req: http.IncomingMessage) {
-  return await new Promise<Buffer>((resolve, reject) => {
-    const chunks: Buffer[] = [];
-    req.on('data', chunk => chunks.push(chunk));
-    req.on('end', () => resolve(Buffer.concat(chunks)));
-    req.on('error', reject);
-  });
-}
-
-export class MockingProxy {
-  private readonly _registry: ServerInterceptionRegistry;
-
-  constructor(registry: ServerInterceptionRegistry) {
-    this._registry = registry;
-  }
-
-  install(server: WorkerHttpServer) {
-    server.routePrefix('/', (req, res) => {
+    this._httpServer.routePrefix('/', (req, res) => {
       this._proxy(req, res);
       return true;
     });
-    server.server().on('connect', (req, socket, head) => {
+    this._httpServer.server().on('connect', (req, socket, head) => {
       socket.end('HTTP/1.1 405 Method Not Allowed\r\n\r\n');
     });
   }
 
+  async start(port?: number): Promise<void> {
+    await this._httpServer.start({ port });
+  }
+
+  get port() {
+    return this._httpServer.port();
+  }
+
+  setInterceptionPatterns(matches?: (url: string) => boolean) {
+    this._matches = matches;
+  }
+
   private async _proxy(req: http.IncomingMessage, res: http.ServerResponse) {
     if (req.url?.startsWith('/'))
       req.url = req.url.substring(1);
@@ -170,14 +71,14 @@ export class MockingProxy {
     delete req.headersDistinct.host;
     const headers = headersArray(req);
     const body = await collectBody(req);
-    const result = await this._registry.handle(req.url!, req.method!, body, headers);
-    switch (result.result) {
-      case 'abort': {
-        req.destroy(result.errorCode ? new Error(result.errorCode) : undefined);
-        return;
-      }
-      case 'continue': {
-        const { overrides } = result;
+    const request = new Request(this, null, null, null, undefined, req.url!, '', req.method!, body, headers);
+    request.setRawRequestHeaders(headers);
+
+    const route = new Route(request, {
+      abort: async errorCode => {
+        req.destroy(errorCode ? new Error(errorCode) : undefined);
+      },
+      continue: async overrides => {
         const proxyUrl = url.parse(overrides?.url ?? req.url!);
         const httpLib = proxyUrl.protocol === 'https:' ? https : http;
         const proxyHeaders = overrides?.headers ?? headers;
@@ -225,16 +126,11 @@ export class MockingProxy {
 
             const address = socket.address() as AddressInfo;
             const responseBodyPromise = new ManualPromise<Buffer>();
-            const response = this._registry.response(
-                result.request,
-                proxyRes.statusCode!,
-                proxyRes.statusMessage!, headersArray(proxyRes),
-                () => responseBodyPromise,
-                proxyRes.httpVersion,
-                timings,
-                securityDetails,
-                { ipAddress: address.family === 'IPv6' ? `[${address.address}]` : address.address, port: address.port },
-            );
+            const response = new Response(request, proxyRes.statusCode!, proxyRes.statusMessage!, headersArray(proxyRes), timings, () => responseBodyPromise, false, proxyRes.httpVersion);
+            response.setRawResponseHeaders(headers);
+            response._securityDetailsFinished(securityDetails);
+            response._serverAddrFinished({ ipAddress: address.family === 'IPv6' ? `[${address.address}]` : address.address, port: address.port });
+            this.emit('response', response);
 
             try {
               res.writeHead(proxyRes.statusCode!, proxyRes.headers);
@@ -253,20 +149,24 @@ export class MockingProxy {
               const body = Buffer.concat(chunks);
               responseBodyPromise.resolve(body);
 
-              response.finished(
-                  monotonicTime() - startAt,
-                  socket.bytesRead - socketBytesReadStart,
-                  body.byteLength
-              );
+              const transferSize = socket.bytesRead - socketBytesReadStart;
+              const encodedBodySize = body.byteLength;
+              response._requestFinished(monotonicTime() - startAt);
+              response.setTransferSize(transferSize);
+              response.setEncodedBodySize(encodedBodySize);
+              response.setResponseHeadersSize(transferSize - encodedBodySize);
+              this.emit('requestFinished', response);
               resolve();
             } catch (error) {
-              this._registry.failed(result.request, error.toString());
+              request._setFailureText('' + error);
+              this.emit('failed', request);
               resolve();
             }
           });
 
           proxyReq.on('error', error => {
-            this._registry.failed(result.request, error.toString());
+            request._setFailureText('' + error);
+            this.emit('failed', request);
             res.statusCode = 502;
             res.end(resolve);
           });
@@ -283,19 +183,51 @@ export class MockingProxy {
           });
           proxyReq.end(proxyBody);
         });
-      }
-      case 'fulfill': {
-        const { response: { status, headers, body, isBase64 } } = result;
+      },
+      fulfill: async ({ status, headers, body, isBase64 }) => {
         res.statusCode = status;
         for (const { name, value } of headers)
           res.appendHeader(name, value);
         res.sendDate = false;
         res.end(Buffer.from(body, isBase64 ? 'base64' : 'utf-8'));
-        return;
-      }
-      default: {
-        throw new Error('Unexpected result');
-      }
-    }
+      },
+    });
+
+    if (this._matches?.(req.url!))
+      this.emit('route', { route, request });
+    else
+      await route.continue({ isFallback: false });
+  }
+}
+
+function headersArray(req: Pick<http.IncomingMessage, 'headersDistinct'>): HeadersArray {
+  return Object.entries(req.headersDistinct).flatMap(([name, values = []]) => values.map(value => ({ name, value })));
+}
+
+function headersArrayToOutgoingHeaders(headers: HeadersArray) {
+  const result: http.OutgoingHttpHeaders = {};
+  for (const { name, value } of headers) {
+    if (result[name] === undefined)
+      result[name] = value;
+    else if (Array.isArray(result[name]))
+      result[name].push(value);
+    else
+      result[name] = [result[name] as string, value];
+  }
+  return result;
+}
+
+async function collectBody(req: http.IncomingMessage) {
+  return await new Promise<Buffer>((resolve, reject) => {
+    const chunks: Buffer[] = [];
+    req.on('data', chunk => chunks.push(chunk));
+    req.on('end', () => resolve(Buffer.concat(chunks)));
+    req.on('error', reject);
+  });
+}
+
+export class WorkerHttpServer extends HttpServer {
+  override _handleCORS(request: http.IncomingMessage, response: http.ServerResponse): boolean {
+    return false;
   }
 }
diff --git a/packages/playwright-core/src/server/network.ts b/packages/playwright-core/src/server/network.ts
index f3c09d9aa8..b4f5020093 100644
--- a/packages/playwright-core/src/server/network.ts
+++ b/packages/playwright-core/src/server/network.ts
@@ -89,10 +89,10 @@ export function stripFragmentFromUrl(url: string): string {
 }
 
 export interface RequestContext extends SdkObject {
-  addRouteInFlight(route: Route): void;
-  removeRouteInFlight(route: Route): void;
-
   fetchRequest: APIRequestContext;
+
+  addRouteInFlight?(route: Route): void;
+  removeRouteInFlight?(route: Route): void;
 }
 
 export class Request extends SdkObject {
@@ -261,7 +261,7 @@ export class Route extends SdkObject {
     super(request._frame || request._context, 'route');
     this._request = request;
     this._delegate = delegate;
-    this._request._context.addRouteInFlight(this);
+    this._request._context.addRouteInFlight?.(this);
   }
 
   request(): Request {
@@ -347,7 +347,7 @@ export class Route extends SdkObject {
   }
 
   private _endHandling() {
-    this._request._context.removeRouteInFlight(this);
+    this._request._context.removeRouteInFlight?.(this);
   }
 }
 
diff --git a/packages/protocol/src/channels.d.ts b/packages/protocol/src/channels.d.ts
index a7afad3639..5c1863b521 100644
--- a/packages/protocol/src/channels.d.ts
+++ b/packages/protocol/src/channels.d.ts
@@ -455,7 +455,7 @@ export type LocalUtilsInitializer = {
 };
 export interface LocalUtilsEventTarget {
 }
-export interface LocalUtilsChannel extends LocalUtilsEventTarget, EventTargetChannel {
+export interface LocalUtilsChannel extends LocalUtilsEventTarget, Channel {
   _type_LocalUtils: boolean;
   zip(params: LocalUtilsZipParams, metadata?: CallMetadata): Promise<LocalUtilsZipResult>;
   harOpen(params: LocalUtilsHarOpenParams, metadata?: CallMetadata): Promise<LocalUtilsHarOpenResult>;
diff --git a/packages/protocol/src/protocol.yml b/packages/protocol/src/protocol.yml
index 629c5ce4f5..839874d24a 100644
--- a/packages/protocol/src/protocol.yml
+++ b/packages/protocol/src/protocol.yml
@@ -551,8 +551,6 @@ EventTarget:
 LocalUtils:
   type: interface
 
-  extends: EventTarget
-
   initializer:
     deviceDescriptors:
       type: array