diff --git a/src/vs/vscode.d.ts b/src/vs/vscode.d.ts
index f3b72ee538f..b73cbe2cfb5 100644
--- a/src/vs/vscode.d.ts
+++ b/src/vs/vscode.d.ts
@@ -8191,6 +8191,11 @@ declare module 'vscode' {
 		 */
 		export const appRoot: string;
 
+		/**
+			 * The environment in which the app is hosted in. i.e. 'desktop', 'codespaces', 'web'.
+			 */
+		export const appHost: string;
+
 		/**
 		 * The custom uri scheme the editor registers to in the operating system.
 		 */
diff --git a/src/vs/vscode.proposed.d.ts b/src/vs/vscode.proposed.d.ts
index 47c83cfd8e2..1fec9f34151 100644
--- a/src/vs/vscode.proposed.d.ts
+++ b/src/vs/vscode.proposed.d.ts
@@ -2889,17 +2889,6 @@ declare module 'vscode' {
 
 	//#endregion
 
-	//#region https://github.com/microsoft/vscode/issues/129053
-
-	export namespace env {
-		/**
-		 * The environment in which the app is embedded in. i.e. 'desktop', 'codespaces', 'web'.
-		 */
-		export const embedderIdentifier: string;
-	}
-
-	//#endregion
-
 	//#region https://github.com/microsoft/vscode/issues/88716
 	export interface QuickPickItem {
 		buttons?: QuickInputButton[];
diff --git a/src/vs/workbench/api/common/extHost.api.impl.ts b/src/vs/workbench/api/common/extHost.api.impl.ts
index bf22402b631..3568792ff6a 100644
--- a/src/vs/workbench/api/common/extHost.api.impl.ts
+++ b/src/vs/workbench/api/common/extHost.api.impl.ts
@@ -292,7 +292,7 @@ export function createApiFactoryAndRegisterActors(accessor: ServicesAccessor): I
 			get language() { return initData.environment.appLanguage; },
 			get appName() { return initData.environment.appName; },
 			get appRoot() { return initData.environment.appRoot?.fsPath ?? ''; },
-			get embedderIdentifier() { return initData.environment.embedderIdentifier; },
+			get appHost() { return initData.environment.appHost; },
 			get uriScheme() { return initData.environment.appUriScheme; },
 			get clipboard(): vscode.Clipboard { return extHostClipboard.value; },
 			get shell() {
diff --git a/src/vs/workbench/api/common/extHost.protocol.ts b/src/vs/workbench/api/common/extHost.protocol.ts
index 88be737bcaf..d8a28c2000d 100644
--- a/src/vs/workbench/api/common/extHost.protocol.ts
+++ b/src/vs/workbench/api/common/extHost.protocol.ts
@@ -72,7 +72,7 @@ import * as search from 'vs/workbench/services/search/common/search';
 export interface IEnvironment {
 	isExtensionDevelopmentDebug: boolean;
 	appName: string;
-	embedderIdentifier: string;
+	appHost: string;
 	appRoot?: URI;
 	appLanguage: string;
 	appUriScheme: string;
diff --git a/src/vs/workbench/services/extensions/browser/webWorkerExtensionHost.ts b/src/vs/workbench/services/extensions/browser/webWorkerExtensionHost.ts
index 5bfa3e8fb66..8dfc7052947 100644
--- a/src/vs/workbench/services/extensions/browser/webWorkerExtensionHost.ts
+++ b/src/vs/workbench/services/extensions/browser/webWorkerExtensionHost.ts
@@ -383,7 +383,7 @@ export class WebWorkerExtensionHost extends Disposable implements IExtensionHost
 			environment: {
 				isExtensionDevelopmentDebug: this._environmentService.debugRenderer,
 				appName: this._productService.nameLong,
-				embedderIdentifier: this._productService.embedderIdentifier || 'web',
+				appHost: this._productService.embedderIdentifier || 'web',
 				appUriScheme: this._productService.urlProtocol,
 				appLanguage: platform.language,
 				extensionDevelopmentLocationURI: this._environmentService.extensionDevelopmentLocationURI,
diff --git a/src/vs/workbench/services/extensions/common/remoteExtensionHost.ts b/src/vs/workbench/services/extensions/common/remoteExtensionHost.ts
index 75dfe905b59..c0bd87065a2 100644
--- a/src/vs/workbench/services/extensions/common/remoteExtensionHost.ts
+++ b/src/vs/workbench/services/extensions/common/remoteExtensionHost.ts
@@ -231,7 +231,7 @@ export class RemoteExtensionHost extends Disposable implements IExtensionHost {
 				isExtensionDevelopmentDebug,
 				appRoot: remoteInitData.appRoot,
 				appName: this._productService.nameLong,
-				embedderIdentifier: this._productService.embedderIdentifier || 'desktop',
+				appHost: this._productService.embedderIdentifier || 'desktop',
 				appUriScheme: this._productService.urlProtocol,
 				appLanguage: platform.language,
 				extensionDevelopmentLocationURI: this._environmentService.extensionDevelopmentLocationURI,
diff --git a/src/vs/workbench/services/extensions/electron-browser/localProcessExtensionHost.ts b/src/vs/workbench/services/extensions/electron-browser/localProcessExtensionHost.ts
index 4b107a2c885..482aca0aaf9 100644
--- a/src/vs/workbench/services/extensions/electron-browser/localProcessExtensionHost.ts
+++ b/src/vs/workbench/services/extensions/electron-browser/localProcessExtensionHost.ts
@@ -471,7 +471,7 @@ export class LocalProcessExtensionHost implements IExtensionHost {
 				isExtensionDevelopmentDebug: this._isExtensionDevDebug,
 				appRoot: this._environmentService.appRoot ? URI.file(this._environmentService.appRoot) : undefined,
 				appName: this._productService.nameLong,
-				embedderIdentifier: this._productService.embedderIdentifier || 'desktop',
+				appHost: this._productService.embedderIdentifier || 'desktop',
 				appUriScheme: this._productService.urlProtocol,
 				appLanguage: platform.language,
 				extensionDevelopmentLocationURI: this._environmentService.extensionDevelopmentLocationURI,