diff --git a/src/vs/workbench/services/extensions/common/extensionsApiProposals.ts b/src/vs/workbench/services/extensions/common/extensionsApiProposals.ts
index a5e42e1d5d6..8f28d7f7f4d 100644
--- a/src/vs/workbench/services/extensions/common/extensionsApiProposals.ts
+++ b/src/vs/workbench/services/extensions/common/extensionsApiProposals.ts
@@ -58,7 +58,6 @@ export const allApiProposals = Object.freeze({
 	languageConfigurationAutoClosingPairs: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.languageConfigurationAutoClosingPairs.d.ts',
 	mappedEditsProvider: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.mappedEditsProvider.d.ts',
 	notebookCellExecutionState: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.notebookCellExecutionState.d.ts',
-	notebookCodeActions: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.notebookCodeActions.d.ts',
 	notebookControllerAffinityHidden: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.notebookControllerAffinityHidden.d.ts',
 	notebookDeprecated: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.notebookDeprecated.d.ts',
 	notebookExecution: 'https://raw.githubusercontent.com/microsoft/vscode/main/src/vscode-dts/vscode.proposed.notebookExecution.d.ts',
diff --git a/src/vscode-dts/vscode.d.ts b/src/vscode-dts/vscode.d.ts
index a8ab72cab99..bb5573aac0e 100644
--- a/src/vscode-dts/vscode.d.ts
+++ b/src/vscode-dts/vscode.d.ts
@@ -2474,6 +2474,24 @@ declare module 'vscode' {
 		 */
 		static readonly SourceFixAll: CodeActionKind;
 
+		/**
+		 * Base kind for all code actions applying to the enitre notebook's scope. CodeActionKinds using
+		 * this should always begin with `notebook.`
+		 *
+		 * This requires that new CodeActions be created for it and contributed via extensions.
+		 * Pre-existing kinds can not just have the new `notebook.` prefix added to them, as the functionality
+		 * is unique to the full-notebook scope.
+		 *
+		 * Notebook CodeActionKinds can be initialized as either of the following (both resulting in `notebook.source.xyz`):
+		 * - `const newKind =  CodeActionKind.Notebook.append(CodeActionKind.Source.append('xyz').value)`
+		 * - `const newKind =  CodeActionKind.Notebook.append('source.xyz')`
+		 *
+		 * Example Kinds/Actions:
+		 * - `notebook.source.organizeImports` (might move all imports to a new top cell)
+		 * - `notebook.source.normalizeVariableNames` (might rename all variables to a standardized casing format)
+		 */
+		static readonly Notebook: CodeActionKind;
+
 		/**
 		 * Private constructor, use statix `CodeActionKind.XYZ` to derive from an existing code action kind.
 		 *
diff --git a/src/vscode-dts/vscode.proposed.notebookCodeActions.d.ts b/src/vscode-dts/vscode.proposed.notebookCodeActions.d.ts
deleted file mode 100644
index 0768e7c2d48..00000000000
--- a/src/vscode-dts/vscode.proposed.notebookCodeActions.d.ts
+++ /dev/null
@@ -1,17 +0,0 @@
-/*---------------------------------------------------------------------------------------------
- *  Copyright (c) Microsoft Corporation. All rights reserved.
- *  Licensed under the MIT License. See License.txt in the project root for license information.
- *--------------------------------------------------------------------------------------------*/
-
-declare module 'vscode' {
-
-	// https://github.com/microsoft/vscode/issues/179213
-
-	export class NotebookCodeActionKind {
-		// can only return MULTI CELL workspaceEdits
-		// ex: notebook.organizeImprots
-		static readonly Notebook: CodeActionKind;
-
-		constructor(value: string);
-	}
-}