diff --git a/packages/plugin-ext/src/plugin/plugin-context.ts b/packages/plugin-ext/src/plugin/plugin-context.ts
index a72d2af839842..fa19ce1e12d17 100644
--- a/packages/plugin-ext/src/plugin/plugin-context.ts
+++ b/packages/plugin-ext/src/plugin/plugin-context.ts
@@ -1218,9 +1218,17 @@ export function createAPIFactory(
             }
         };
 
+        const chat: typeof theia.chat    = {
+            /** @stubbed MappedEditsProvider */
+            registerMappedEditsProvider(documentSelector: theia.DocumentSelector, provider: theia.MappedEditsProvider): Disposable {
+                return Disposable.NULL;
+            }
+        };
+
         return <typeof theia>{
             version: require('../../package.json').version,
             authentication,
+            chat,
             commands,
             comments,
             window,
diff --git a/packages/plugin/src/theia.d.ts b/packages/plugin/src/theia.d.ts
index 3ffce743ddb84..17468c2b7b1bd 100644
--- a/packages/plugin/src/theia.d.ts
+++ b/packages/plugin/src/theia.d.ts
@@ -30,6 +30,7 @@ import './theia.proposed.dropMetadata';
 import './theia.proposed.editSessionIdentityProvider';
 import './theia.proposed.extensionsAny';
 import './theia.proposed.externalUriOpener';
+import './theia.proposed.mappedEditsProvider';
 import './theia.proposed.notebookCellExecutionState';
 import './theia.proposed.notebookKernelSource';
 import './theia.proposed.notebookMessaging';
diff --git a/packages/plugin/src/theia.proposed.mappedEditsProvider.d.ts b/packages/plugin/src/theia.proposed.mappedEditsProvider.d.ts
new file mode 100644
index 0000000000000..cedc13e167e6b
--- /dev/null
+++ b/packages/plugin/src/theia.proposed.mappedEditsProvider.d.ts
@@ -0,0 +1,59 @@
+// *****************************************************************************
+// Copyright (C) 2024 STMicroelectronics and others.
+//
+// This program and the accompanying materials are made available under the
+// terms of the Eclipse Public License v. 2.0 which is available at
+// http://www.eclipse.org/legal/epl-2.0.
+//
+// This Source Code may also be made available under the following Secondary
+// Licenses when the conditions for such availability set forth in the Eclipse
+// Public License v. 2.0 are satisfied: GNU General Public License, version 2
+// with the GNU Classpath Exception which is available at
+// https://www.gnu.org/software/classpath/license.html.
+//
+// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-only WITH Classpath-exception-2.0
+// *****************************************************************************
+
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+export module '@theia/plugin' {
+
+    export interface DocumentContextItem {
+        readonly uri: Uri;
+        readonly version: number;
+        readonly ranges: Range[];
+    }
+
+    export interface MappedEditsContext {
+        documents: DocumentContextItem[][];
+    }
+
+    /**
+     * Interface for providing mapped edits for a given document.
+     */
+    export interface MappedEditsProvider {
+        /**
+         * Provide mapped edits for a given document.
+         * @param document The document to provide mapped edits for.
+         * @param codeBlocks Code blocks that come from an LLM's reply.
+         *                  "Insert at cursor" in the panel chat only sends one edit that the user clicks on, but inline chat can send multiple blocks
+         *                  and let the lang server decide what to do with them.
+         * @param context The context for providing mapped edits.
+         * @param token A cancellation token.
+         * @returns A provider result of text edits.
+         */
+        provideMappedEdits(
+            document: TextDocument,
+            codeBlocks: string[],
+            context: MappedEditsContext,
+            token: CancellationToken
+        ): ProviderResult<WorkspaceEdit | null>;
+    }
+
+    export namespace chat {
+        export function registerMappedEditsProvider(documentSelector: DocumentSelector, provider: MappedEditsProvider): Disposable;
+    }
+}